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05256–15 DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003) 05–421 586 AuthorĂ: DateĂ: 2004 COROLLA (RM1037U) SUPPLEMENTAL RESTRAINT SYSTEM (Apr., 2003) HOW TO PROCEED WITH TROUBLESHOOTING The hand–held tester can be used at step 4, 6, 8 and 9. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS (See page 05–423) 3 WARNING LIGHT CHECK (See page 05–424) 4 THE DTCs CHECK (Present and Past DTCs) (See page 05–424) DTCs IS OUTPUT (INCLUDING NORMAL SYS- TEM CODE): Go to step 5 DTCs IS NOT OUTPUT: PROBLEM SYMPTOMS TABLE (See page 05–436 ) 5 THE DTCs CHART (See page 05–430) 6 CIRCUIT INSPECTION (See page 05–437 to 05–579) TROUBLE CODE IS OUTPUT: Go to step 7 NORMAL SYSTEM CODE IS OUTPUT: Go to step 11 7 REPAIR 8 CLEAR THE DTCs (Present and Past DTCs) (See page 05–424)

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Page 1: HOW TO PROCEED WITH TROUBLESHOOTINGtoyotadostlari.com/uploads/diagnostics-SRS.pdf · 05256–15 diagnostics – supplemental restraint system (april, 2003) 05–421 author: date:

05256–15

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–421

586Author: Date:

2004 COROLLA (RM1037U)

SUPPLEMENTAL RESTRAINT SYSTEM (Apr., 2003)HOW TO PROCEED WITH TROUBLESHOOTINGThe hand–held tester can be used at step 4, 6, 8 and 9.

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS (See page 05–423)

3 WARNING LIGHT CHECK (See page 05–424)

4 THE DTCs CHECK (Present and Past DTCs) (See page 05–424)

DTCs IS OUTPUT (INCLUDING NORMAL SYS-TEM CODE): Go to step 5

DTCs IS NOT OUTPUT: PROBLEM SYMPTOMSTABLE (See page 05–436)

5 THE DTCs CHART (See page 05–430)

6 CIRCUIT INSPECTION (See page 05–437 to 05–579)

TROUBLE CODE IS OUTPUT: Go to step 7

NORMAL SYSTEM CODE IS OUTPUT: Go to step11

7 REPAIR

8 CLEAR THE DTCs (Present and Past DTCs) (See page 05–424)

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05–422–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

587Author: Date:

2004 COROLLA (RM1037U)

9 THE DTCs CHECK (Present and Past DTCs) (See page 05–424)

DTCs IS NOT OUTPUT: Go to step 10

DTCs IS OUTPUT: Go to step 5

10 SYMPTOM SIMULATION (See page 01–20)

WARNING LIGHT REMAINS OFF: Go to step 11

WARNING LIGHT IS ON: Go to step 5

11 CONFIRMATION TEST

END

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05257–12

[]

[ ]

[ ]

H40122

Supplemental Restraint System Check Sheet Inspector’sName

Date Vehicle Brought In

Registration No.

Registration Year

Frame No.

Odometer ReadingkmMiles

Date Problem Occurred

Weather

Temperature

Fine Cloudy Rainy Snowy Other

Approx.

Starting Idling

Driving Constant speed Acceleration DecelerationOther

Vehicle Operation

Road Condition

Details Of Problem

Vehicle Inspection, Repair Histo-ry Prior to Occurrence of Mal-function (Including Supplemen-tal Restraint System)

Diagnosis System Inspection

SRS Warning LightInspection

DTC Inspection

1st Time

2nd Time

Remains ON Does Not Light Up

Normal Code Malfunction Code Code.

Customer’s Name

1st Time

2nd Time

Sometimes Lights Up

Remains ON Does Not Light UpSometimes Lights Up

Normal Code Malfunction Code Code.

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–423

588Author: Date:

2004 COROLLA (RM1037U)

CUSTOMER PROBLEM ANALYSIS CHECK

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05258–08

C93955

H40173CG

Tc

05–424–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

589Author: Date:

2004 COROLLA (RM1037U)

PRE–CHECK1. SRS WARNING LIGHT CHECK(a) Turn the ignition switch to the ON position and check that

the SRS warning light lights up.(b) Check that the SRS warning light goes out after approx.

6 seconds.HINT: When the ignition switch is at ON and the SRS warning

light remains on or flashes, the airbag sensor assemblyhas detected a malfunction code.

If, after approx. 6 second have elapsed, the SRS warninglight sometimes lights up, a short in the SRS warning lightcircuit can be considered likely. Proceed to ”SRS warninglight circuit malfunction” on page 05–585 and 05–588.

2. DTC CHECK ( using diagnosis check wire)(a) Present troubles codes:

Output the DTC.(1) Turn the ignition switch to the ON position and wait

for approx. 60 seconds.(2) Using SST, connect terminals Tc and CG of the

DLC3.SST 09843–18040

NOTICE:Pay due attention to the terminal connecting position toavoid a malfunction.(b) Past troubles codes:

Output the DTC.(1) Using service wire, connect terminals Tc and CG of

the DLC3.SST 09843–18040(2) Turn the ignition switch to the ON position and wait

for approx. 60 seconds.NOTICE:Pay due attention to the terminal connecting position toavoid a malfunction.

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H13050

Normal Code (w/o Past Trouble Code)

Normal Code (w/ Past Trouble Code)

Malfunctioning Code (Example Code 11 and 31)

0.25

ON

OFF

0.75

0.25

0.25

ON

OFF

0.5 2.5 4.0

1.5 0.5 Repeat

DTC31DTC11

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–425

590Author: Date:

2004 COROLLA (RM1037U)

(c) Read the DTC.Read the 2–digit DTC as indicated by the number of timesthe SRS warning light blinks. As an example, the blinkingpatterns, normal, 11 and 31 are shown in the illustration.

Normal code indication (w/o past troublecode)The light will blink 2 times per second.

Normal code indication (w/ past trouble code)When the past troubles code is stored in theairbag sensor assembly, the light blinks onlyones a second.

Malfunction code indicationThe first blinking output indicates the first digitof a 2–digit DTC. After a 1.5–second pause,the second blinking output will indicate thesecond digit.

If there are 2 or more codes, there will be a 2.5–second pausebetween each code. After all the codes have been output, therewill be a 4.0–second pause and they will all be repeated.HINT:In the event of a number of trouble codes, indication will startfrom the smallest numbered code.

3. DTC CHECK (Using hand–held tester)(a) Hook up the hand–held tester to the DLC3.(b) Read the DTCs by following the prompts on the tester screen.HINT:Please refer to the hand–held tester operator’s manual for further details.4. DTC CLEARANCE (Not using service wire)(a) When the ignition switch is turned off, the diagnostic trouble code is cleared.HINT:DTC might not be cleared by turning the ignition switch OFF. In this case, proceed to the next step.5. DTC CLEARANCE (Using service wire)(a) Using a service wire, connect terminals TC and CG of the DLC3.(b) Disconnect terminal TC of DLC3 within 10 seconds after the DTC begins to be output, and check if

the warning light lights up within 3 seconds.(c) Within 2.0 seconds to 4.0 seconds after the SRS warning light lights up, connect the terminals TC and

CG of the DLC3.(d) Light the SRS warning light goes off 2.0 to 4.0 seconds after connecting the terminals TC and CG of

DLC3, then disconnect the terminal TC of the DLC3 2.0 to 4.0 seconds after the warning light goesoff.

(e) Light the SRS warning light on again 3 seconds after disconnecting terminal TC of DLC3, then within2.0 to 4.0 seconds after the lighting, connect terminals TC and CG of the DLC3.

(f) Check if the SRS warning light goes off 2.0 to 4.0 seconds after connecting terminals TC and CG ofDLC3, and the correct code is output 1 second after the SRS warning goes off.

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H41917

T1: 0 – ∞ second

IG S/W

DLC3

SRS Warning

ON

OFF

Open

Short0.5 sec.

1.5 sec.

T1

0.25 sec.

T2: approx. 6 secondT3: 3 – 5 second

T7: within 1 second

*: The past trouble code in the illustration shows DTC 21 as an example.

T4: 3 – 10 secondT5: 2 – 4 secondT6: 1 – 5 second

T2 T3 T4 T5 T6 T5 T6 T5 T6 T5 T7

0.5 sec. 0.25 sec.CG

TC

Light (*)

05–426–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

591Author: Date:

2004 COROLLA (RM1037U)

If DTCs are to cleared, repeat the above procedure until the codes are cleared.

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–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–427

592Author: Date:

2004 COROLLA (RM1037U)

6. DTC CLEARANCE (Using hand–held tester)(a) Hook up the hand–held tester to the DLC3.(b) Clear the DTCs by following the prompts on the tester screen.HINT:Please refer to the hand–held tester operation’s manual for further details.7. RELEASE METHOD OF AIRBAG ACTIVATION PREVENTION MECHANISM(a) An airbag activention prevention mechanism is built into the connector for the squib circuit of the SRS.

When release of the airbag activation prevention mechanism is directed in the troubleshooting proce-dure, as shown in the illustration of the connectors on the next pages, insert paper which has the samethickness as the male terminal between the terminal and the short spring.

CAUTION:Never release the airbag activation prevention mechanism on the squib connector.NOTICE: Do not release the airbag activation prevention mechanism unless specifically directed by the

troubleshooting procedure. If the inserted paper is too thick the terminal and short spring may be damaged, so always use

paper with the same thickness as the male terminal.

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H41916

Airbag SensorAssy Center

Front Airbag Sensor (LH)

Side Airbag Sensor Assy (LH)

Spiral Cable Sub–Assy

Horn Button Assy (Squib)

Instrument Panel Passenger Airbag Assy (Squib)

Front Seat Airbag Assy (LH) (Squib)

Seat BeltPretensioner (LH)

Front Airbag Sensor (RH)

Seat BeltPretensioner (RH)

Front Seat Airbag Assy (RH) (Squib)

Side Airbag Sensor Assy (RH)

15

5

6

13

11

9

8

7

10

12

4

14

16

3

1

2

05–428–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

593Author: Date:

2004 COROLLA (RM1037U)

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H41995

Airbag Sensor Assy Center Connector

Short Spring Short Spring Short Spring

Before Release After Release

Paper

Before Release After Release

Paper

Before Release After Release

Paper

Short Spring

Short Spring

Connector 6

Connector 8

Short Spring

Short Spring

Connector

Before Release After Release

Paper

12 3

4

15

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–429

594Author: Date:

2004 COROLLA (RM1037U)

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05259–14

05–430–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

595Author: Date:

2004 COROLLA (RM1037U)

DIAGNOSTIC TROUBLE CODE CHARTDTC No.

(See page)Detection Item Trouble Area

SRSWarning Light

B0100/13(05–437)

SHORT IN D SQUIB CIRCUIT Horn button assy (squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

ON

B0101/14(05–441)

OPEN IN D SQUIB CIRCUIT Horn button assy (squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

ON

B0102/11(05–445)

SHORT IN D SQUIB CIRCUIT(TO GROUND)

Horn button assy (squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

ON

B0103/12(05–449)

SHORT IN D SQUIB CIRCUIT(TO B+)

Horn button assy (squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

ON

B0105/53(05–453)

SHORT IN P SQUIB CIRCUIT Instrument panel passenger airbag assy (squib)Airbag sensor assy center Instrument panel wire

ON

B0106/54(05–457)

OPEN IN P SQUIB CIRCUIT Instrument panel passenger airbag assy (squib)Airbag sensor assy center Instrument panel wire

ON

B0107/51(05–460)

SHORT IN P SQUIB CIRCUIT(TO GROUND)

Instrument panel passenger airbag assy (squib)Airbag sensor assy center Instrument panel wire

ON

B0108/52(05–463)

SHORT IN P SQUIB CIRCUIT(TO B+)

Instrument panel passenger airbag assy (squib)Airbag sensor assy center Instrument panel wire

ON

B0110/43(05–466)

SHORT IN SIDE SQUIB (RH) CIR-CUIT

Front seat airbag assy RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0111/44(05–469)

OPEN IN SIDE SQUIB (RH) CIRCUIT Front seat airbag assy RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0112/41(05–472)

SHORT IN SIDE SQUIB (RH) CIRCUIT (TO GROUND)

Front seat airbag assy RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0113/42(05–475)

SHORT IN SIDE SQUIB (RH) CIRCUIT (TO B+)

Front seat airbag assy RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0115/47(05–478)

SHORT IN SIDE SQUIB (LH) CIRCUIT

Front seat airbag assy LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0116/48(05–481)

OPEN IN SIDE SQUIB (LH) CIRCUIT Front seat airbag assy LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0117/45(05–484)

SHORT IN SIDE SQUIB (LH) CIRCUIT (TO GROUND)

Front seat airbag assy LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0118/46(05–487)

SHORT IN SIDE SQUIB (LH) CIRCUIT (TO B+)

Front seat airbag assy LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0126/B0127/27

(05–490)

SEAT BELT BUCKLE SWITCH (LH) MALFUNCTION

Front seat inner belt assy (LH)Airbag sensor assy center Instrument panel wire No.3

ON

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–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–431

596Author: Date:

2004 COROLLA (RM1037U)

B0130/63(05–494)

SHORT IN P/T SQUIB (RH) CIRCUIT Seat belt pretensioner RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0131/64(05–498)

OPEN IN P/T SQUIB (RH) CIRCUIT Seat belt pretensioner RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0132/61(05–501)

SHORT IN P/T SQUIB (RH) CIRCUIT(TO GROUND)

Seat belt pretensioner RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0133/62(05–504)

SHORT IN P/T SQUIB (RH) CIRCUIT(TO B+)

Seat belt pretensioner RH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0135/73(05–507)

SHORT IN P/T SQUIB (LH) CIRCUIT Seat belt pretensioner LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0136/74(05–511)

OPEN IN P/T SQUIB (LH) CIRCUIT Seat belt pretensioner LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0137/71(05–514)

SHORT IN P/T SQUIB (LH) CIRCUIT(TO GROUND)

Seat belt pretensioner LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B0138/72(05–517)

SHORT IN P/T SQUIB (LH) CIRCUIT(TO B+)

Seat belt pretensioner LH (squib)Airbag sensor assy center Instrument panel wire No.3

Blink

B1100/31(05–520)

AIRBAG SENSOR ASSY CENTERMALFUNCTION

Airbag sensor assy centerON

B1135/24(05–522)

HALF CONNECTION DETECTIONMALFUNCTION

Airbag sensor assy centerON

B1140/32(05–524)

SIDE AIRBAG SENSOR ASSY (RH)MALFUNCTION

Airbag sensor assy centerSide Airbag sensor assy RH Instrument panel wire No.3

Blink

B1141/33(05–529)

SIDE AIRBAG SENSOR ASSY (LH)MALFUNCTION

Airbag sensor assy centerSide Airbag sensor assy LH Instrument panel wire No.3

Blink

B1153/25(05–534)

SEAT POSITION AIRBAG SENSORASSY MALFUNCTION

Seat position airbag sensorAirbag sensor assy center Instrument panel wire No.3Wire harness (Seat position airbag sensor – Front seat inner

belt assy)

ON

B1156/B1157/15

(05–542)

FRONT AIRBAG SENSOR (RH)MALFUNCTION

Airbag front RH sensorAirbag sensor assy centerEngine room main Instrument panel wire No.3 Instrument panel wire

ON

B1158/B1159/16

(05–548)

FRONT AIRBAG SENSOR (LH) MALFUNCTION

Airbag sensor front LHAirbag sensor assy centerEngine room main Instrument panel wire No.3 Instrument panel wire

ON

B1180/17(05–554)

SHORT IN D SQUIB (2ND STEP) CIRCUIT

Horn button assy (D squib (2nd step))Spiral cable sub–assyAirbag sensor assy center Instrument panel wire No.3

ON

B1181/18(05–558)

OPEN IN D SQUIB (2ND STEP) CIRCUIT

Horn button assy (D squib (2nd step))Spiral cable sub–assyAirbag sensor assy center Instrument panel wire No.3

ON

B1182/19(05–562)

SHORT IN D SQUIB (2ND STEP) CIRCUIT (TO GROUND)

Horn button assy (D squib (2nd step))Spiral cable sub–assyAirbag sensor assy center Instrument panel wire No.3

ON

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05–432–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

597Author: Date:

2004 COROLLA (RM1037U)

B1183/22(05–566)

SHORT IN D SQUIB (2ND STEP) CIRCUIT (TO B+)

Horn button assy (D squib (2nd step))Spiral cable sub–assyAirbag sensor assy center Instrument panel wire No.3

ON

B1185/57(05–570)

SHORT IN P SQUIB (2ND STEP) CIRCUIT

Instrument panel passenger airbag assy (P squib (2nd step))Airbag sensor assy center Instrument panel wire

ON

B1186/58(05–573)

OPEN IN P SQUIB (2ND STEP) CIRCUIT

Instrument panel passenger airbag assy (P squib (2nd step))Airbag sensor assy center Instrument panel wire

ON

B1187/55(05–576)

SHORT IN P SQUIB (2ND STEP) CIRCUIT (TO GROUND)

Instrument panel passenger airbag assy (P squib (2nd step))Airbag sensor assy center Instrument panel wire

ON

B1188/56(05–579)

SHORT IN P SQUIB (2ND STEP) CIRCUIT (TO B+)

Instrument panel passenger airbag assy (P squib (2nd step))Airbag sensor assy center Instrument panel wire

ON

NormalSYSTEM NORMAL – OFF

Normal(05–582) VOLTAGE SOURCE DROP Battery

Airbag sensor assy centerON

HINT: When the SRS warning light remains lit up and the DTC is the normal code, this means a voltage source

drops.This malfunction is not stored in memory by the Airbag sensor assy center and if the power sourcevoltage returns to normal, the SRS warning light will automatically go out.

When 2 or more codes are indicated, the codes will be displayed in numeral order starting from thelowest numbered code.

If a code not listed on the chart is displayed, the Airbag sensor assy center is faulty. In the case of any malfunction concerning any open circuit, ground short, or B+ short due to any squib,

another malfunction code may not be detected. In this case, correct the malfunction currently beingoutput, and then perform malfunction diagnosis again. Another malfunction code may then be de-tected.

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0525A–13

H41998

Instrument Panel Passenger Airbag Assy

Airbag Sensor Front LH

Combination Meter (Warning Light)

Airbag Front RH Sensor

Spiral Cable Sub–Assy

Horn Button Assy (w/ Airbag)Airbag Sensor Assy Center

Seat Belt Pretensioner RH

Side Airbag Sensor Assy LH

Side Airbag Sensor Assy RH

Seat Belt Pretensioner LH

Front Seat Airbag Assy LH

Front Seat Airbag Assy RH

DLC3

Seat Position Airbag Sensor Seat Belt Buckle Switch LH

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–433

598Author: Date:

2004 COROLLA (RM1037U)

LOCATION

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05DQA–01

H40028

A12 A13 A14

05–434–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

599Author: Date:

2004 COROLLA (RM1037U)

TERMINALS OF ECU

No. Symbol Terminal Name

A – Electrical Connector Check Mechanism

B – Electrical Connector Check Mechanism

A13–3 LA SRS Warning Light

A13–5 IG2 Power Source (IG2 Fuse)

A13–7 P2– Squib (Passenger (2 step))

A13–8 P2+ Squib (Passenger (2 step))

A13–9 +SR Front Airbag Sensor (RH)

A13–10 P+ Squib (Passenger)

A13–11 P– Squib (Passenger)

A13–12 SIL Diagnosis

A13–13 D– Squib (Driver)

A13–14 D+ Squib (Driver)

A13–15 +SL Airbag Front Sensor (LH)

A13–16 D2+ Squib (Driver (2 step))

A13–17 D2– Squib (Driver (2 step))

A13–19 Tc Diagnosis

A13–20 –SR Airbag Front Sensor (RH)

A13–23 GSW2 ECM

A13–26 –SL AIrbag Front Sensor (LH)

A13–27 E1 Ground

A13–28 E2 Ground

A12–1 PL– Squib (Seat Belt Pretensioner, LH)

A12–2 PL+ Squib (Seat Belt Pretensioner, LH)

A12–3 LSP+ Seat Position Sensor

A12–4 LSP– Seat Position Sensor

A12–5 SFL– Squib (Side, LH)

A12–6 SFL+ Squib (Side, LH)

A12–7 VUPL Side Airbag Sensor Assy (LH)

A12–9 SSL– Side Airbag Sensor Assy (LH)

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–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–435

600Author: Date:

2004 COROLLA (RM1037U)

No. Terminal NameSymbol

A12–10 FSL Side Airbag Sensor Assy (LH)

A12–11 LBE+ Seat Belt Buckle Switch (LH)

A12–12 ESL Side Airbag Sensor Assy (LH)

A14–1 SFR+ Squib (Side, RH)

A14–2 SFR– Squib (Side, RH)

A14–5 PR+ Squib (Seat Belt Pretensioner, RH)

A14–6 PR– Squib (Seat Belt Pretensioner, RH)

A14–7 ESR Side Airbag Sensor Assy (RH)

A14–9 FSR Side Airbag Sensor Assy (RH)

A14–10 SSR– Side Airbag Sensor Assy (RH)

A14–12 VUPR Side Airbag Sensor Assy (RH)

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0525C–13

05–436–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

601Author: Date:

2004 COROLLA (RM1037U)

PROBLEM SYMPTOMS TABLEHINT:Proceed with troubleshooting of each circuit in the table below.

Symptom Suspect Area See page

When the ignition switch is in the ON position, the SRS warninglight sometimes comes on after approximately 6 seconds.

SRS warning light circuit malfunction05 585

SRS warning light always comes on even when DTC is not out-put.

SRS warning light circuit malfunction(Always lights up, when DTC is not output).

05–585

With the ignition switch is in the ON position, the SRS warninglight does not come on.

SRS warning light circuit malfunction(Does not light up, when ignition switch is turned to ON).

05–588

Although a SRS warning light operates normally, DTC or a nor-mal system code is not displayed.

TC terminal circuit 05 590Although the terminals TC and CG are not connected, DTC or a

normal system code are displayed.

TC terminal circuit 05–590

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H01451

Airbag Sensor Assy Center

A16D Squib

Spiral Cable Sub–Assy

Y

Y–BD+

D–

1A13

2A1313

14D+

D–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–437

602Author: Date:

2004 COROLLA (RM1037U)

DTC B0100/13 SHORT IN D SQUIB CIRCUIT

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B0100/13 is recorded when a short is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0100/13

Short circuit between D+ wire harness and D– wire har-ness of squib

D squib malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAM

055Y1–04

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H01001

C91344 H41439

D Squib AirbagSensorAssyCenter

Spiral Cable Sub–Assy

Color: Orange

H01002

H10600 H40103 H40030

D Squib AirbagSensorAssyCenter

DLC3

CG Tc

DTC B0100/13

SpiralCableSub–Assy

05–438–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

603Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the horn button assy.

(c) Release the airbag activation prevention mechanism ofthe connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the spiral cablesub–assy (See page 05–424).

(d) For the connector (on the spiral cable sub–assy side) be-tween the horn button assy and the spiral cable sub–assy,measure the resistance between D+ and D–.OK:Resistance: 1 M Ω or Higher

NG Go to step 4

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0100/13 is not output.

HINT:Codes other than code B0100/13 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 H40103 H40031

D Squib AirbagSensorAssyCenter

DLC3

CGTc

DTC B0100/13

SpiralCableSub–Assy

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–439

604Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0100/13 is not output.

HINT:Codes other than code B0100/13 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01004H41424 H41440

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

H01000C91344 H41441

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

05–440–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

605Author: Date:

2004 COROLLA (RM1037U)

4 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) Release the airbag activation prevention mechanism of

the connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the spiral cablesub–assy (See page 05–424).

(c) For the connector (on the spiral cable sub–assy side) be-tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D+ and D–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

5 CHECK SPIRAL CABLE SUB–ASSY

(a) Release the airbag activation prevention mechanism ofthe spiral cable sub–assy connector on the airbag sensorassy center side (See page 05–424).

(b) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D+ and D–.OK:Resistance: 1 M Ω or Higher

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01001

C91344 H41439

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–441

606Author: Date:

2004 COROLLA (RM1037U)

DTC B0101/14 OPEN IN D SQUIB CIRCUIT

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0101/14 is recorded when an open is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0101/14

Open circuit in D+ wire harness or D– wire harness of squibD squib malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–437.

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the horn button assyand the airbag sensor assy center.

(c) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D+ and D–.OK:Resistance: Below 1 Ω

NG Go to step 4

OK

055Y2–04

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H01002

H10600

C91348

W02044H42104

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

DLC3

CG Tc

DTC B0101/14

05–442–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

607Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect D+ and D– of the orange

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0101/14 is not output.

HINT:Codes other than code B0101/14 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 W02044 H40036

D Squib

DLC3 DTC B0101/14

CGTc

AirbagSensorAssyCenter

SpiralCableSub–Assy

H01004H41424 H41440

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–443

608Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0101/14 is not output.

HINT:Codes other than code B0101/14 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

USE SIMULATION METHOD TO CHECK

4 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) For the connector (on the spiral cable sub–assy side) be-

tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D+ and D–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

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H01000C91344 H41441

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

05–444–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

609Author: Date:

2004 COROLLA (RM1037U)

5 CHECK SPIRAL CABLE SUB–ASSY

(a) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D+ and D–.OK:Resistance: Below 1 Ω

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01001

C91344 H41439

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–445

610Author: Date:

2004 COROLLA (RM1037U)

DTC B0102/11 SHORT IN D SQUIB CIRCUIT (TO GROUND)

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B0102/11 is recorded when a ground short is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0102/11

Short circuit in D squib wire harness (to ground)D squib malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–437.

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the horn button assy.

(c) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D+ and bodyground.OK:Resistance: 1 M Ω or Higher

NG Go to step 5

OK

0525F–14

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H01002

C91348

H10600 W02042 H42105

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

DLC3

CG Tc

DTC B0102/11

05–446–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

611Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect D+ and D– of the orange

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait t least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0102/11 is not output.

HINT:Codes other than code B0102/11 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 W02042 H40037

D Squib

DLC3 DTC B0102/11

CGTc

AirbagSensorAssyCenter

SpiralCableSub–Assy

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–447

612Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0102/11 is not output.

HINT:Codes other than code B0102/11 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01004H41424 H41440

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

H01000C91344 H41441

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

05–448–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

613Author: Date:

2004 COROLLA (RM1037U)

5 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) For the connector (on the spiral cable sub–assy side) be-

tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D+ and bodyground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

6 CHECK SPIRAL CABLE SUB–ASSY

(a) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D+ and bodyground.OK:Resistance: 1 M Ω or Higher

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

7 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01001

C91344 H41439

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–449

614Author: Date:

2004 COROLLA (RM1037U)

DTC B0103/12 SHORT IN D SQUIB CIRCUIT (TO B+)

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B0103/12 is recorded when a B+ short is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0103/12

Short circuit in D squib wire harness (to B+)D squib malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–437.

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the horn button assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the orange connector (on the spiral cable sub–assy

side) between the horn button assy and the spiral cablesub–assy, measure the voltage between D+ and bodyground.OK:Voltage: Below 1 V

NG Go to step 5

OK

0525G–13

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H01002

C91348

H10600 W02043 H42106

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

DLC3

CG Tc

DTC B0103/12

05–450–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

615Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect D+ and D– of the orange

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 60 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0103/12 is not output.

HINT:Codes other than code B0103/12 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 W02043 H40038

D Squib

DLC3DTC B0103/12

CG Tc

AirbagSensorAssyCenter

SpiralCableSub–Assy

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–451

616Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0103/12 is not output.

HINT:Codes other than code B0103/12 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01004H41424 H41440

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

H01000C91344 H41441

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Orange

05–452–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

617Author: Date:

2004 COROLLA (RM1037U)

5 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Turn the ignition switch to LOCK.(b) Disconnect the connectors of the instrument panel wire.(c) Turn the ignition switch to ON.(d) For the connector (on the spiral cable sub–assy side) be-

tween the airbag sensor assy center and the spiral cablesub–assy, measure the voltage between D+ and bodyground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

6 CHECK SPIRAL CABLE SUB–ASSY

(a) For the orange connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the voltage between D+ and bodyground.OK:Voltage: Below 1 V

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

7 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01454

A15P Squib

Airbag Sensor Assy Center

Y–R

Y–G

1

2

10P+A13

P–11

A13

P+

P–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–453

618Author: Date:

2004 COROLLA (RM1037U)

DTC B0105/53 SHORT IN P SQUIB CIRCUIT

CIRCUIT DESCRIPTIONThe P squib circuit consists of the airbag sensor assy center and instrument panel passenger airbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0105/53 is recorded when a short is detected in the P squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0105/53

Short circuit between P+ wire harness and P– wire harness of squib.

P squib malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAM

055Y3–04

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P+

P–

05–454–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

619Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

HINT:Make sure that the connector is not damaged (The lock buttonis not disengaged, or the claw of the lock is not deformed ordamaged). If the damage is found, replace the wire harness.(c) Release the airbag activation prevention mechanism of

the connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the instrumentpanel passenger airbag assy (See page 05–424).

(d) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P+ and P–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

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H01023

H10600 H01077 H41933

P Squib AirbagSensorAssyCenter

DLC3

CG Tc

DTC B0105/53

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–455

620Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0105/53 is not output.

HINT:Codes other than code B0105/53 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600 H01077

H01024

H40041

P Squib

DTC B0105/53DLC3

CGTc

AirbagSensorAssyCenter

05–456–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

621Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0105/53 is not output.

HINT:Codes other than code B0105/53 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

USE SIMULATION METHOD TO CHECK

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P+

P–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–457

622Author: Date:

2004 COROLLA (RM1037U)

DTC B0106/54 OPEN IN P SQUIB CIRCUIT

CIRCUIT DESCRIPTIONThe P squib circuit consists of the airbag sensor assy center and instrument panel passenger airbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0106/54 is recorded when an open is detected in the P squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0106/54

Open circuit in P+ wire harness or P– wire harness ofsquib

P squib malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–453.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P+ and P–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

055Y4–04

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H01023

H10600 H01078

H16855

H41934

P Squib AirbagSensorAssyCenter

DLC3DTC B0106/54

CG Tc

05–458–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

623Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect P+ and P– of the connector

(on the instrument panel passenger airbag assy side) be-tween the airbag sensor assy center and the instrumentpanel passenger airbag assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0106/54 is not output.

HINT:Codes other than code B0106/54 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600 H01078

H01024

H40043

DTC B0106/54DLC3

CGTc

AirbagSensorAssyCenter

P Squib

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–459

624Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0106/54 is not output.

HINT:Codes other than code B0106/54 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

USE SIMULATION METHOD TO CHECK

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P+

P–

05–460–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

625Author: Date:

2004 COROLLA (RM1037U)

DTC B0107/51 SHORT IN P SQUIB CIRCUIT (TO GROUND)

CIRCUIT DESCRIPTIONThe P squib circuit consists of the airbag sensor assy center and instrument panel passenger airbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0107/51 is recorded when ground short is detected in the P squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0107/51Short circuit in P squib wire harness (to ground)P squib malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–453.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P+ and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

0525J–13

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H01023

H10600 H01075

H16855

H41977

P Squib AirbagSensorAssyCenter

DLC3

CG Tc

DTC B0107/51

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–461

626Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect P+ and P– of the connector

(on the instrument panel passenger airbag assy side) be-tween the airbag sensor assy center and the instrumentpanel passenger airbag assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0107/51 is not output.

HINT:Codes other than code B0107/51 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H01075 H40045

P Squib

DTC B0107/51DLC3

CGTc

AirbagSensorAssyCenter

05–462–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

627Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0107/51 is not output.

HINT:Codes other than code B0107/51 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P+

P–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–463

628Author: Date:

2004 COROLLA (RM1037U)

DTC B0108/52 SHORT IN P SQUIB CIRCUIT (TO B+)

CIRCUIT DESCRIPTIONThe P squib circuit consists of the airbag sensor assy center and instrument panel passenger airbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0108/52 is recorded when a B+ short is detected in the P squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B0108/52Short circuit in P squib wire harness (to B+)P squib malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–453.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the instrument panel passenger air-

bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the voltage between P+ and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

0525K–13

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H01023

H10600 H01076

H16855

H41978

P Squib AirbagSensorAssyCenter

DTC B0108/52DLC3

CG Tc

05–464–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

629Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect P+ and P– of the connector

(on the instrument panel passenger airbag assy side) be-tween the airbag sensor assy center and the instrumentpanel passenger airbag assy.

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0108/52 is not output.

HINT:Codes other than code B0108/52 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H01076 H40047

P Squib

DLC3

CG Tc

DTC B0108/52

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–465

630Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0108/52 is not output.

HINT:Codes other than code B0108/52 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01454

S7Side Squib (RH)

Airbag Sensor Assy Center

SFR+

SFR–

Y–R

Y–G

1

2 2

1A14

A14

05–466–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

631Author: Date:

2004 COROLLA (RM1037U)

DTC B0110/43 SHORT IN SIDE SQUIB (RH) CIRCUIT

CIRCUIT DESCRIPTIONThe side squib (RH) circuit consists of the airbag sensor assy center and front seat airbag assy (RH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0110/43 is recorded when a short is detected in the side squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0110/43

Short circuit between SFR+ wire harness and SFR– wireharness of squib

Side squib (RH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055Y5–05

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H01019

C82598 H40977

Side Squib (RH)

Airbag Sensor AssyCenter

SFR+SFR–

H01020

H10600 H01069 H42111

Side Squib (RH)

Airbag Sensor AssyCenter

DLC3

CG Tc

DTC B0110/43

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–467

632Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the front seat airbagassy (RH) and the airbag sensor assy center.

(c) Release the airbag activation prevention mechanism ofthe connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the front seatairbag assy (RH) (See page 05–424).

(d) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (RH), measure the resistance between SFR+and SFR–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY RH)

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the the connector to the airbag sensor assy cen-

ter.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0110/43 is not output.

HINT:Codes other than code B0110/43 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01021

H10600 H01069 H40979

Side Squib (RH)

DLC3 DTC B0110/43

TcCG

Airbag Sensor AssyCenter

05–468–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

633Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0110/43 is not output.

HINT:Codes other than code B0110/43 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01019

C82598 H40977

Side Squib (RH)

Airbag Sensor AssyCenter

SFR+SFR–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–469

634Author: Date:

2004 COROLLA (RM1037U)

DTC B0111/44 OPEN IN SIDE SQUIB (RH) CIRCUIT

CIRCUIT DESCRIPTIONThe side squib (RH) circuit consists of the airbag sensor assy center and front seat airbag assy (RH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0111/44 is recorded when an open is detected in the side squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0111/44

Open circuit in SFR+ wire harness or SFR– wire harnessof squib

Side squib (RH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–466.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (RH).

(c) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (RH), measure the resistance between SFR+and SFR–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY RH)

OK

055Y9–04

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H01020

H16278

H10600 H01070 H40980

Side Squib (RH)

DTC B0111/44DLC3

CG Tc

Airbag Sensor AssyCenter

05–470–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

635Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect SFR+ and SFR– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0111/44 is not output.

HINT:Codes other than code B0111/44 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01021

H10600 H01070 H40981

Side Squib (RH)

DTC B0111/44DLC3

CG Tc

Airbag Sensor AssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–471

636Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0111/44 is not output.

HINT:Codes other than code B0111/44 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01019

C82598

H41450

Airbag Sensor AssyCenter

Side Squib (RH)

05–472–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

637Author: Date:

2004 COROLLA (RM1037U)

DTC B0112/41 SHORT IN SIDE SQUIB (RH) CIRCUIT (TOGROUND)

CIRCUIT DESCRIPTIONThe side squib (RH) circuit consists of the airbag sensor assy center and front seat airbag assy (RH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0112/41 is recorded when ground short is detected in the side squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0112/41Short circuit in side squib (RH) wire harness (to ground)Side squib (RH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–466.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (RH).

(c) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (RH), measure the resistance between SFR+and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY RH)

OK

0525N–12

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H01020

H16278

H10600 H01067 H42112

Side Squib (RH)

Airbag Sensor AssyCenter

DLC3

CG Tc

DTC B0112/41

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–473

638Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect SFR+ and SFR– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0112/41 is not output.

HINT:Codes other than code B0112/41 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01021

H10600 H01067 H40983

DTC B0112/41

TcCG

Side Squib (RH)

DLC3

Airbag Sensor AssyCenter

05–474–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

639Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0112/41 is not output.

HINT:Codes other than code B0112/41 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01019

C82598 H40977

Side Squib (RH)

Airbag Sensor AssyCenter

SFR+SFR–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–475

640Author: Date:

2004 COROLLA (RM1037U)

DTC B0113/42 SHORT IN SIDE SQUIB (RH) CIRCUIT (TOB+)

CIRCUIT DESCRIPTIONThe side squib (RH) circuit consists of the airbag sensor assy center and front seat airbag assy (RH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0113/42 is recorded when a B+ short is detected in the side squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0113/42Short circuit in side squib (RH) wire harness (to B+)Side squib (RH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–466.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the front seat airbag assy side) be-

tween the airbag sensor assy center and the front seatairbag assy (RH), measure the voltage between SFR+and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY RH)

OK

0525O–13

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H01020

H16278

H10600 H01068 H42113

Side Squib (RH)

Airbag Sensor AssyCenter

DLC3

CG Tc

DTC B0113/42

05–476–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

641Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect SFR+ and SFR– of the con-

nector (on the front front seat airbag assy side) betweenthe airbag sensor assy center and the front seat airbagassy (RH).

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0113/42 is not output.

HINT:Codes other than code B0113/42 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01021

H10600 H01068 H40985

Side Squib (RH)

CG

DTC B0113/42DLC3

Tc

Airbag Sensor AssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–477

642Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0113/42 is not output.

HINT:Codes other than code B0113/42 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01454

S6Side Squib (LH)

Airbag Sensor Assy Center

SFL+

SFL–

Y–R

Y–G

1

25

6

A12

A12

05–478–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

643Author: Date:

2004 COROLLA (RM1037U)

DTC B0115/47 SHORT IN SIDE SQUIB (LH) CIRCUIT

CIRCUIT DESCRIPTIONThe side squib (LH) circuit consists of the airbag sensor assy center and front seat airbag assy (LH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0115/47 is recorded when a short is detected in the side squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0115/47

Short circuit between SFL+ wire harness and SFL– wireharness of squib

Side squib (LH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055YI–04

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H01016

C82598 H40986

Side Squib (LH)

Airbag Sensor AssyCenter

SFL+

SFL–

H01017

H16278

H10600 H01073 H40987

Side Squib (LH)

DTC B0115/47DLC3

TcCG

Airbag Sensor AssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–479

644Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (LH).

(c) Release the airbag activation prevention mechanism ofthe connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the front seatairbag assy (LH) (See page 05–424).

(d) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (LH), measure the resistance between SFL+and SFL–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect SFL+ and SFL– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0115/47 is not output.

HINT:Codes other than code B0115/47 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01018

H10600 H01073 H40988

Side Squib (LH)

DTC B0115/47DLC3

TcCG

Airbag Sensor AssyCenter

05–480–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

645Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0115/47 is not output.

HINT:Codes other than code B0115/47 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01016

C82598 H40986

Side Squib (LH)

Airbag Sensor AssyCenter

SFL–

SFL+

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–481

646Author: Date:

2004 COROLLA (RM1037U)

DTC B0116/48 OPEN IN SIDE SQUIB (LH) CIRCUIT

CIRCUIT DESCRIPTIONThe side squib (LH) circuit consists of the airbag sensor assy center and front seat airbag assy (LH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0116/48 is recorded when an open is detected in the side squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0116/48

Open circuit in SFL+ wire harness or SFL– wire harnessof squib

Side squib (LH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–478.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (LH).

(c) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (LH), measure the resistance between SFL+and SFL–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY LH)

OK

055YJ–04

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H01017

H16278

H10600 H01074 H40989

Side Squib (LH)

CG

DTC B0116/48DLC3

Tc

Airbag Sensor AssyCenter

05–482–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

647Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect SFL+ and SFL– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0116/48 is not output.

HINT:Codes other than code B0116/48 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01018

H10600 H01074 H40990

DLC3 DTC B0116/48

TcCG

Side Squib (LH)

Airbag Sensor AssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–483

648Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0116/48 is not output.

HINT:Codes other than code B0116/48 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01016

C82598 H40986

Airbag Sensor AssyCenter

SFL+

SFL–

Side Squib (LH)

05–484–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

649Author: Date:

2004 COROLLA (RM1037U)

DTC B0117/45 SHORT IN SIDE SQUIB (LH) CIRCUIT (TOGROUND)

CIRCUIT DESCRIPTIONThe side squib (LH) circuit consists of the airbag sensor assy center and front seat airbag assy (LH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0117/45 is recorded when a ground short is detected in the side squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0117/45Short circuit in side squib (LH) wire harness (to ground)Side squib (LH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–478.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (LH).

(c) For the connector (on the front seat airbag assy side) be-tween the airbag sensor assy center and the front seatairbag assy (LH), measure the resistance between SFL+and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY LH)

OK

0525R–13

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H01017

H16278

H10600 H01071 H40991

DLC3

CG Tc

DTC B0117/45

Airbag Sensor AssyCenter

Side Squib (LH)

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–485

650Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect SFL+ and SFL– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0117/45 is not output.

HINT:Codes other than code B0117/45 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01018

H10600 H01071 H40992

Tc

Side Squib (LH)

DTC B0117/45DLC3

CG

Airbag Sensor AssyCenter

05–486–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

651Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front front seat airbag assy (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0117/45 is not output.

HINT:Codes other than code B0117/45 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01016

C82598 H40986

Side Squib (LH)

Airbag Sensor AssyCenter

SFL+

SFL–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–487

652Author: Date:

2004 COROLLA (RM1037U)

DTC B0118/46 SHORT IN SIDE SQUIB (LH) CIRCUIT (TOB+)

CIRCUIT DESCRIPTIONThe side squib (LH) circuit consists of the airbag sensor assy center and front seat airbag assy (LH).It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0118/46 is recorded when a B+ short is detected in the side squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0118/46Short circuit in side squib (LH) wire harness (to B+)Side squib (LH) malfunctionAirbag sensor assy center malfunction

Front seat airbag assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–478.

INSPECTION PROCEDURE

1 CHECK SIDE SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT AIRBAG ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat airbag assy (LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the front seat airbag assy side) be-

tween the airbag sensor assy center and the front seatairbag assy (LH), measure the voltage between SFL+and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT AIRBAG ASSY LH)

OK

0525S–12

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H01017

H16278

H10600 H01072 H40993

Side Squib (LH)

CG Tc

DTC B0118/46DLC3

Airbag Sensor AssyCenter

05–488–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

653Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect SFL+ and SFL– of the con-

nector (on the front seat airbag assy side) between theairbag sensor assy center and the front seat airbag assy(LH).

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0118/46 is not output.

HINT:Codes other than code B0118/46 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01018

H10600 H01072 H40994

Side Squib (LH)

DTC B0118/46DLC3

TcCG

Airbag Sensor AssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–489

654Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SIDE SQUIB(LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the front seat airbag assy (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0118/46 is not output.

HINT:Codes other than code B0118/46 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEPARATE TYPE FRONT SEATBACK ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H16798

B6Seat Belt Buckle Switch (LH)

Airbag Sensor Assy Center

11LBE+A12

G2

05–490–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

655Author: Date:

2004 COROLLA (RM1037U)

DTC B0126/27 SEAT BELT BUCKLE SWITCH (LH)MALFUNCTION

DTC B0127/27 SEAT BELT BUCKLE SWITCH (LH)MALFUNCTION

CIRCUIT DESCRIPTIONThe seat belt buckle switch (LH) circuit consists of the airbag sensor assy center and front seat inner beltassy (LH).DTC B0126/B0127/27 is recorded when a malfunction is detected in the seat belt buckle switch (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0126/B0127/27

Short circuit in LBE+ wire harness (to ground)Short circuit in LBE+ wire harness (to B+)Open circuit in LBE+ wire harnessFront seat inner belt assy (LH) malfunctionAirbag sensor assy center malfunction

Front seat inner belt assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055YR–05

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H01010

C81676 H40447

Airbag SensorAssyCenter

Front SeatInnerBelt Assy LH

LBE+

H01010

C81676 H40447

Airbag SensorAssyCenter

Front SeatInnerBelt Assy LH

LBE+

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–491

656Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK WIRE HARNESS(AIRBAG SENSOR ASSY CENTER – FRONT SEAT INNERBELT ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the front seat inner belt assy (LH).

(c) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the front seatinner belt assy (LH), measure the resistance betweenLBE+ and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3 (AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY LH)

OK

2 CHECK WIRE HARNESS(AIRBAG SENSOR ASSY CENTER – FRONT SEAT INNERBELT ASSY LH)

(a) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(b) Turn the ignition switch to ON.(c) For the connector (on the airbag sensor assy center side)

between the airbag sensor assy center and the front seatinner belt assy (LH), measure the voltage between LBE+and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3 (AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY LH)

OK

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H41987

Airbag SensorAssyCenter

Front Seat InnerBelt Assy LH

LBE+

H41987

Airbag SensorAssyCenter

Front Seat InnerBelt Assy LH

LBE+

05–492–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

657Author: Date:

2004 COROLLA (RM1037U)

3 CHECK FRONT SEAT INNER BELT ASSY LH

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector of the front seat inner belt assy

(LH).(d) Unlock the seat belt for the front driver’s seat.(e) For the connector (on the airbag sensor assy center side),

measure the resistance between LBE+ and body ground.OK:Resistance: 1.0 k Ω – 1.6 kΩ

NG REPLACE FRONT SEAT INNER BELT ASSY LH

OK

4 CHECK FRONT SEAT INNER BELT ASSY LH

(a) Lock the seat belt for the front driver’s seat.(b) For the connector (on the airbag sensor assy center side),

measure the resistance between LBE+ and body ground.OK:Resistance: 100 Ω – 500 Ω

NG REPLACE FRONT SEAT INNER BELT ASSY LH

OK

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C85269

H10600 C85273 H41027

Front Seat Inner Belt Assy LH

Airbag Sensor Assy Center

DTC B0126/B0127/27DLC3

TCCG

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–493

658Author: Date:

2004 COROLLA (RM1037U)

5 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0126/B0127/27 is not output.

HINT:Codes other than code B0126/B0127/27 may be output at thistime, but they are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H01454

A145

PR+

6PR–

Y–B

Y

1

2

Airbag Sensor Assy Center

P13P/T Squib (RH)

A14

05–494–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

659Author: Date:

2004 COROLLA (RM1037U)

DTC B0130/63 SHORT IN P/T SQUIB (RH) CIRCUIT

CIRCUIT DESCRIPTIONThe P/T squib (RH) circuit consists of the airbag sensor assy center and seat belt pretensioner (RH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0130/63 is recorded when a short is detected in the P/T squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0130/63

Short circuit between PR+ wire harness and PR– wireharness of squib

P/T squib (RH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055YV–05

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H01019

C81077 H40048

AirbagSensorAssyCenter

P/T Squib (RH)

PR+ PR–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–495

660Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(RH) CIRCUIT(AIRBAGA SENSOR ASSY CENTER – FRONTSEAT OUTER BELT ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (RH).

HINT:Make sure that the connector is not damaged (The lock buttonis not disengaged, or the claw of the lock is not deformed ordamaged). If the damage is found, replace the wire harness.(c) Release the airbag activation prevention mechanism of

the connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (RH) (See page 05–424).

(d) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (RH), measure the resistance between PR+and PR–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY RH)

OK

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H10600

H01020

H01082H10600

H01020

H01082 H40049

DLC3

CG Tc

DTC B0130/63

P/T Squib (RH)

AirbagSensorAssyCenter

05–496–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

661Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0130/63 is not output.

HINT:Codes other than code B0130/63 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600 H01082

H01021

H40050

DLC3

CG Tc

DTC B0130/63

P/T Squib (RH)

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–497

662Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0130/63 is not output.

HINT:Codes other than code B0130/63 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY RH

OK

USE SIMULATION METHOD TO CHECK

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H01019

C81077 H40048

P/T Squib (RH)

AirbagSensorAssyCenter

PR+ PR–

05–498–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

663Author: Date:

2004 COROLLA (RM1037U)

DTC B0131/64 OPEN IN P/T (RH) CIRCUIT

CIRCUIT DESCRIPTIONThe P/T squib circuit (RH) consists of the airbag sensor assy center and seat belt pretensioner (RH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0131/64 is recorded when an open is detected in the P/T squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0131/64

Open circuit in PR+ wire harness or PR– wire harness ofsquib

P/T squib (RH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–494.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT OUTER BELT ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (RH).

(c) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (RH), measure the resistance between PR+and PR–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY RH)

OK

055YY–05

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H01020

C85243

H10600 H01083 H40951

P/T Squib (RH)

DLC3

CG Tc

DTC B0131/64

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–499

664Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect PR+ and PR– of the con-

nector (on the seat belt pretensioner side) between theairbag sensor assy center and the seat belt pretensioner(RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0131/64 is not output.

HINT:Codes other than code B0131/64 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01021

H01083 H40051

P/T Squib (RH)

DLC3

CG Tc

DTC B0131/64

AirbagSensorAssyCenter

05–500–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

665Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0131/64 is not output.

HINT:Codes other than code B0131/64 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY RH

OK

USE SIMULATION METHOD TO CHECK

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H01019

C81077 H40048

P/T Squib (RH)

PR+ PR–

Airbag Sensor Assy Center

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–501

666Author: Date:

2004 COROLLA (RM1037U)

DTC B0132/61 SHORT IN P/T SQUIB (RH) CIRCUIT (TOGROUND)

CIRCUIT DESCRIPTIONThe P/T squib (RH) circuit consists of the airbag sensor assy center and seat belt pretensioner (RH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0132/61 is recorded when a ground short is detected in the P/T squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0132/61Short circuit in P/T squib (RH) wire harness (to ground)P/T squib (RH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–494.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT OUTER BELT ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (RH).

(c) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (RH), measure the resistance between PR+and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY RH)

OK

0525V–14

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H01020

C85243

H10600 H01079 H40952

P/T Squib (RH)

DLC3 DTC B0132/61

TcCG

Airbag Sensor Assy Center

05–502–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

667Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect PR+ and PR– of the con-

nector (on the seat belt pretensioner side) between theairbag sensor assy center and the seat belt pretensioner(RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0132/61 is not output.

HINT:Codes other than code B0132/61 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01021

H01079 H40053

AirbagSensorAssyCenter

P/T Squib (RH)

DLC3DTC B0132/61

TcCG

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–503

668Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0132/61 is not output.

HINT:Codes other than code B0132/61 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY RH

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01019

C81077 H40048

P/T Squib (RH)

PR+ PR–

Airbag Sensor Assy Center

05–504–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

669Author: Date:

2004 COROLLA (RM1037U)

DTC B0133/62 SHORT IN P/T SQUIB (RH) CIRCUIT (TO B+)

CIRCUIT DESCRIPTIONThe P/T squib (RH) circuit consists of the airbag sensor assy center and seat belt pretensioner (RH).It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B0133/62 is recorded when a B+ short is detected in the P/T squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0133/62

Short circuit in seat belt pretensioner (RH) wire harness(to B+)

P/T squib (RH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–494.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(RH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONTSEAT OUTER BELT ASSY RH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (RH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the seat belt pretensioner side) be-

tween the airbag sensor assy center and the seat belt pre-tensioner (RH), measure the voltage between PR+ andbody ground.OK:Voltage: Below 1V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY RH)

OK

0525W–14

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H01020

C85243

H10600 H01081 H40953

P/T Squib (RH)

DLC3 DTC B0133/62

TcCG

Airbag Sensor Assy Center

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–505

670Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect PR+ and PR– of the con-

nector (on the seat belt pretensioner side) between theairbag sensor assy center and the seat belt pretensioner(RH).

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0133/62 is not output.

HINT:Codes other than code B0133/62 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01021

H01081 H40055

P/T Squib (RH)

DLC3 DTC B0133/62

TcCG

Airbag Sensor Assy Center

05–506–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

671Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (RH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (RH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0133/62 is not output.

HINT:Codes other than code B0133/62 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY RH

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01454

Airbag Sensor Assy Center

P12P/T Squib(LH)

2

A12 PL+Y–B

1A12 PL–

Y

1

2

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–507

672Author: Date:

2004 COROLLA (RM1037U)

DTC B0135/73 SHORT IN P/T SQUIB (LH) CIRCUIT

CIRCUIT DESCRIPTIONThe P/T squib (LH) circuit consists of the airbag sensor assy center and seat belt pretensioner (LH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0135/73 is recorded when a short is detected in the P/T squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0135/73

Short circuit between PL+ wire harness and PL– wire har-ness of squib

P/T squib (LH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055YZ–05

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H01016

C81077 H40056

P/T Squib (RH)

PL+ PL–

AirbagSensorAssy Center

05–508–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

673Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONT SEATOUTER BELT ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (LH).

HINT:Make sure that the connector is not damaged (The lock buttonis not disengaged, or the claw of the lock is not deformed ordamaged). If the damage is found, replace the wire harness.(c) Release the airbag activation prevention mechanism of

the connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (LH) (See page 05–424).

(d) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (LH), measure the resistance between PL+ andPL–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY LH)

OK

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H10600

H01017

H01086 H40057

P/T Squib (LH)

DLC3

TcCG

DTC B0135/73

AirbagSensorAssy Center

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–509

674Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B0135/73 is not output.

HINT:Codes other than code B0135/73 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600 H01086

H01018

H40058

AirbagSensorAssyCenter

P/T Squib (LH)

DLC3

TcCG

DTC B0135/73

05–510–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

675Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0135/73 is not output.

HINT:Codes other than code B0135/73 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY LH

OK

USE SIMULATION METHOD TO CHECK

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H01016

C81077 H40056

P/T Squib (LH)

PL+ PL–

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–511

676Author: Date:

2004 COROLLA (RM1037U)

DTC B0136/74 OPEN IN P/T SQUIB (LH) CIRCUIT

CIRCUIT DESCRIPTIONThe P/T squib circuit (LH) consists of the airbag sensor assy center and seat belt pretensioner (LH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0136/74 is recorded when an open is detected in the P/T squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0136/74

Open circuit in PL+ wire harness or PL– wire harness ofsquib

P/T squib (LH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–507.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONT SEATOUTER BELT ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (LH).

(c) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (LH), measure the resistance between PL+ andPL–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY LH)

OK

055Z0–05

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H01017

C85243

H10600 H01087 H40950

P/T Squib (LH)

DLC3

TcCG

DTC B0136/74

AirbagSensorAssyCenter

05–512–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

677Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect PL+ and PL– of the connec-

tor (on the seat belt pretensioner side) between the airbagsensor assy center and the seat belt pretensioner (LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0136/74 is not output.

HINT:Codes other than code B0136/74 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01018

H01087 H40060

P/T Squib (LH)

DLC3

CG

DTC B0136/74

Tc

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–513

678Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0136/74 is not output.

HINT:Codes other than code B0136/74 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY LH

OK

USE SIMULATION METHOD TO CHECK

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H01016

C81077 H40056

P/T Squib (LH)

PL+ PL–

AirbagSensorAssyCenter

05–514–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

679Author: Date:

2004 COROLLA (RM1037U)

DTC B0137/71 SHORT IN P/T SQUIB (LH) CIRCUIT (TOGROUND)

CIRCUIT DESCRIPTIONThe P/T squib (LH) circuit consists of the airbag sensor assy center and seat belt pretensioner (LH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0137/71 is recorded when a ground short is detected in the P/T squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0137/71Short circuit in P/T squib (LH) wire harness (to ground)P/T squib (LH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–507.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONT SEATOUTER BELT ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (LH).

(c) For the connector (on the seat belt pretensioner side) be-tween the airbag sensor assy center and the seat belt pre-tensioner (LH), measure the resistance between PL+ andbody ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY LH)

OK

0525Z–14

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H01017

C85243

H10600 H01084 H40954

P/T Squib (LH)

DLC3

TcCG

DTC B0137/71

AirbagSensorAssyCenter

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–515

680Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect PL+ and PL– of the connec-

tor (on the seat belt pretensioner side) between the airbagsensor assy center and the seat belt pretensioner (LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B0137/71 is not output.

HINT:Codes other than code B0137/71 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01018

H01084 H40062

P/T Squib (LH)

AirbagSensorAssyCenter

DLC3

CG

DTC B0137/71

Tc

05–516–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

681Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0137/71 is not output.

HINT:Codes other than code B0137/71 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY LH

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01016

C81077 H40056

P/T Squib (LH)

PL+ PL–

Airbag Sensor Assy Center

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–517

682Author: Date:

2004 COROLLA (RM1037U)

DTC B0138/72 SHORT IN P/T SQUIB (LH) CIRCUIT (TO B+)

CIRCUIT DESCRIPTIONThe P/T squib (LH) circuit consists of the airbag sensor assy center and seat belt pretensioner (LH). It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B0138/72 is recorded when a B+ short is detected in the P/T squib (LH) circuit.

DTC No. DTC Detecting Condition Trouble Area

B0138/72

Short circuit in seat belt pretensioner (LH) wire harness (to B+)

P/T squib (LH) malfunctionAirbag sensor assy center malfunction

Seat belt pretensioner (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAMSee page 05–507.

INSPECTION PROCEDURE

1 CHECK P/T SQUIB(LH) CIRCUIT(AIRBAG SENSOR ASSY CENTER – FRONT SEATOUTER BELT ASSY LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the seat belt pretensioner (LH).

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the seat belt pretensioner side) be-

tween the airbag sensor assy center and the seat belt pre-tensioner (LH), measure the voltage between PL+ andbody ground.OK:Voltage: Below 1V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT OUTER BELT ASSY LH)

OK

05260–14

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H01017

C85243

H10600 H01085 H40957

P/T Squib (LH)

DLC3

TcCG

DTC B0138/72

Airbag Sensor Assy Center

05–518–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

683Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect PL+ and PL– of the connec-

tor (on the seat belt pretensioner side) between the airbagsensor assy center and the seat belt pretensioner (LH).

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B0138/72 is not output.

HINT:Codes other than code B0138/72 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01018

H01085 H40064

P/T Squib (LH)

DLC3 DTC B0138/72

CG Tc

Airbag Sensor Assy Center

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–519

684Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P/T SQUIB (LH)

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the seat belt pretensioner (LH) connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B0138/72 is not output.

HINT:Codes other than code B0138/72 may be output at this time, butthey are not relevant to this check.

NG REPLACE FRONT SEAT OUTER BELT ASSY LH

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H40065

IG2

E2

E1

05–520–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

685Author: Date:

2004 COROLLA (RM1037U)

DTC B1100/31 AIRBAG SENSOR ASSY MALFUNCTION

CIRCUIT DESCRIPTIONThe airbag sensor assy center consists of a airbag sensor assy center, safing sensor, drive circuit, diagnosiscircuit and ignition control, etc. It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detectsdiagnosis system malfunction. DTC B1100/31 is recorded when occurrence of a malfunction in the airbag sensor assy center is detected.

DTC No. DTC Detecting Condition Trouble Area

B1100/31 Airbag sensor assy center malfunction Airbag sensor assy center

INSPECTION PROCEDUREHINT:When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunctionindicated by the malfunction code other than code B1100/31.

INSPECTION PROCEDURE

1 CHECK VOLTAGE AT IG2 OF AIRBAG SENSOR ASSY CENTER

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connector of the airbag sensor assy cen-ter.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) Measure the voltage between E1 (E2) and IG2 of the air-

bag sensor assy center connector.OK:Voltage: 10 – 14 V

NG CHECK CHECK THAT AN ABNORMALITYOCCURS ON THE BATTERY AND CHARGINGSYSTEM

OK

05261–09

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H10600 H41086

DLC3 DTC B1100/31

CG Tc

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–521

686Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connectors of all the SRS components.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1100/31 is not output.

HINT:Codes other than code B1100/31 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H40997

DLC3 DTC B1135/24

CG Tc

Airbag Sensor Assy Center

05–522–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

687Author: Date:

2004 COROLLA (RM1037U)

DTC B1135/24 HARF CONNECTION IN AIRBAG SENSORASSY CONNECTOR

CIRCUIT DESCRIPTIONThe airbag sensor assy center detects partial connection of connector.DTC B1135/24 is recorded when the airbag sensor assy center detects an open in the electrical connectioncheck mechanism of the airbag sensor connector or in the airbag sensor circuit.

DTC No. DTC Detecting Condition Trouble Area

B1135/24Malfunction of electrical connection check mechanism of

airbag sensor assy center connectorAirbag sensor assy center malfunction

Electrical connection check mechanismAirbag sensor assy center

INSPECTION PROCEDURE

1 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR

(a) Disconnect negative (–) terminal cable from the battery, and wait at least for 90 seconds.(b) Check the connection of the airbag sensor assy center connectors.

NG CONNECT CONNECTORS

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(b) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(c) Clear the DTC stored in memory (See page 05–424).(d) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Check the DTC (See page 05–424).

OK:DTC B1135/24 is not output.

HINT:Codes other than code B1135/24 may be output at this time, butthey are not relevant to this check.

OK USE SIMULATION METHOD TO CHECK

NG

055Z3–05

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H40441

Disconnection Detection Pin

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–523

688Author: Date:

2004 COROLLA (RM1037U)

3 CHECK PERFORM A VISUAL CHECK OF THE DISCONNECTION DETECTION PIN

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) With 3 connectors connected to the airbag sensor assy

center, place tester leads onto any 2 of 3 disconnectiondetection pins and check for continuity.OK:Continuity

NG REPAIR OR REPLACE AIRBAG SENSOR ASSYCENTER CONNECTOR

OK

REPLACE AIR BAG SENSOR ASSY CENTER

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H01450

S11Side Airbag Sensor Assy (RH) Airbag Sensor Assy Center

GR

LG

L–Y

P

ESR

SSR–

FSR

VUPR4

3

2

1A14

7

10

9

12

ESR

SSR–

FSR

VUPR

A14

A14

A14

05–524–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

689Author: Date:

2004 COROLLA (RM1037U)

DTC B1140/32 SIDE AIRBAG SENSOR ASSY (RH)MALFUNCTION

CIRCUIT DESCRIPTIONThe side airbag sensor assy (RH) circuit consists of the diagnosis circuit and lateral deceleration sensor, etc.It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,and detects diagnosis system malfunction. DTC B1140/32 is recorded when occurrence of a malfunction in the side airbag sensor assy (RH) is detected.

DTC No. DTC Detecting Condition Trouble Area

B1140/32

Short circuit in wire harness of side airbag sensor RH (to ground)

Short circuit in wire harness of side airbag sensor RH (to B+)

Open circuit in wire harness of side airbag sensor RHSide airbag sensor assy RH malfunctionAirbag sensor assy center malfunction

Side airbag sensor assy (RH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055Z6–04

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H10600

H01012

H01065 H40442

Side AirbagSensorAssy RH

Airbag Sensor Assy Center

DLC3

CG Tc

DTC B1140/32

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–525

690Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK SIDE AIR BAG SENSOR ASSY RH

SST 09843–18040(a) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(b) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(c) Clear the DTC stored in memory (See page 05–424).(d) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Check the DTC (See page 05–424).

OK:DTC B1140/32 is not output.

HINT:Codes other than code B1140/32 may be output at this time, butthey are not relevant to this check.

OK USE SIMULATION METHOD TO CHECK

NG

2 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(c) Check that the connectors is properly connected to the airbag sensor assy center.

NG CONNECT CONNECTORS

OK

3 CHECK SIDE AIRBAG SENSOR ASSY CONNECTOR

(a) Check that the connector is properly connected to the side airbag sensor assy (RH).

NG CONNECT CONNECTORS

OK

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H01015

C82942

C91384

C91385 H41635

SSR–

VUPR

ESR

Side AirbagSensorAssy RH

Airbag Sensor Assy Center

FSR

H01015

C82942

H01015

C82942 H40444

VUPR

Side AirbagSensorAssy RH

Airbag Sensor Assy Center

SSR–

ESR

FSR

05–526–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

691Author: Date:

2004 COROLLA (RM1037U)

4 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(OPEN)(AIRBAG SENSORASSY CENTER – SIDE AIRBAG SENSOR ASSY RH)

SST 09843–18040(a) Disconnect the connectors between the airbag sensor

assy center and the side airbag sensor assy RH.(b) Using a service wire, connect VUPR and ESR, and FSR

and SSR– of the connector (on the side airbag sensorassy side) between the airbag sensor assy center and theside airbag sensor assy (RH).

(c) For the connector (on the airbag sensor assy center side)between the side airbag sensor assy RH and the airbagsensor assy center, measure the resistance betweenVUPR and ESR, and between FSR and SSR–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY RH)

OK

5 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(TO GROUND)(AIRBAGSENSOR ASSY CENTER – SIDE AIRBAG SENSOR ASSY RH)

(a) Disconnect the connection between VUPR and ESR, andbetween FSR and SSR–.

(b) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the side air-bag sensor assy (RH), measure the resistance betweeneach terminal of VUPR, SSR– and FSR, and bodyground.OK:Resistance: 1M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY RH)

OK

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H01015

C82942

H01015

C82942 H40444

VUPR

Side AirbagSensorAssy RH

Airbag Sensor Assy Center

SSR–

ESR

FSR

H01015

C82942

H01015

C82942 H40444

VUPR

Side AirbagSensorAssy RH

Airbag Sensor Assy Center

SSR–

ESR

FSR

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–527

692Author: Date:

2004 COROLLA (RM1037U)

6 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(AIRBAG SENSOR ASSYCENTER – SIDE AIRBAG SENSOR ASSY RH)

(a) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the side air-bag sensor assy (RH), measure the resistance betweenVUPR and ESR, and between FSR and SSR–.OK:Resistance: 1M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY RH)

OK

7 CHECK SIDE AIRBAG SENSOR ASSY(RH) CIRCUIT(TO B+)(AIRBAG SENSORASSY CENTER – AIDE AIRBAG SENSOR ASSY RH)

(a) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(b) Turn the ignition switch to ON.(c) For the connector (on the airbag sensor assy center side)

between the airbag sensor assy center and the side air-bag sensor assy (RH), measure the voltage betweeneach terminal of VUPR, SSR– and FSR, and bodyground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY RH)

OK

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H10600 H01065

H01012

H01066 H41930

DLC3

CGTc

DTC B1140/32

Side AirbagSensorAssy LH

Airbag Sensor Assy Center

DTC B1141/33

05–528–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

693Author: Date:

2004 COROLLA (RM1037U)

8 CHECK SIDE AIR BAG SENSOR ASSY RH

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the airbag sensor assy center connector.(d) Interchange the side airbag sensor assy (RH) and LH and

connect the connectors to them.(e) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:(A): DTC B1140/32 is not output.(B): DTC B1141/33 is not output.

NG(A) REPLACE AIR BAG SENSOR ASSY CENTER

NG(B) REPLACE SIDE AIR BAG SENSOR ASSY RH

OK

9 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01450

S10Side Airbag Sensor Assy (LH) Airbag Sensor Assy Center

LG–B

L–W

P–L

ESL

SSL–

FSL

VUPL4

3

2

1A1212

9

10

7

GR–LESL

SSL–

FSL

VUPL

A12

A12

A12

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–529

694Author: Date:

2004 COROLLA (RM1037U)

DTC B1141/33 SIDE AIRBAG SENSOR ASSY (LH)MALFUNCTION

CIRCUIT DESCRIPTIONThe side airbag sensor assy (LH) circuit consists of the diagnosis circuit and lateral deceleration sensor, etc.It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,and detects diagnosis system malfunction. DTC B1141/33 is recorded when occurrence of a malfunction in the side airbag sensor assy (LH) is detected.

DTC No. DTC Detecting Condition Trouble Area

B1141/33

Short circuit in wire harness of side airbag sensor LH (to ground)

Short circuit in wire harness of side airbag sensor LH (to B+)

Open circuit in wire harness of side airbag sensor LHSide airbag sensor assy LH malfunctionAirbag sensor assy center malfunction

Side airbag sensor assy (LH)Airbag sensor assy center Instrument panel wire No.3

WIRING DIAGRAM

055Z7–05

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H01007

H10600H01066 H40445

SideAirbagSensorAssy LH

Airbag Sensor Assy Center

DLC3

CGTc

DTC B1141/33

05–530–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

695Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK SIDE AIR BAG SENSOR ASSY LH

SST 09843–18040(a) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(b) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(c) Clear the DTC stored in memory (See page 05–424).(d) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Check the DTC (See page 05–424).

OK:DTC B1141/33 is not output.

OK USE SIMULATION METHOD TO CHECK

NG

2 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(c) Check that the connectors is properly connected to the airbag sensor assy center.

NG CONNECT CONNECTORS

OK

3 CHECK SIDE AIRBAG SENSOR ASSY CONNECTOR

(a) Check that the connector is properly connected to the side airbag sensor assy (LH).

NG CONNECT CONNECTORS

OK

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H01010

C81676

C91384

C91385 H41636

ESL

FSLVUPL

SideAirbagSensorAssy LH

Airbag Sensor Assy Center

SSL–

H01010

C81676

H01010

C81676 H40447VUPL

SideAirbagSensorAssy LH

Airbag Sensor Assy Center

ESL

FSL

SSL–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–531

696Author: Date:

2004 COROLLA (RM1037U)

4 CHECK SIDE AIRBAG SENSOR ASSY(LH) CIRCUIT(OPEN)(AIRBAG SENSORASSY CENTER – SIDE AIRBAG SENSOR ASSY LH)

SST 09843–18040(a) Disconnect the connectors between the airbag sensor

assy center and the side airbag sensor assy LH.(b) Using a service wire, connect VUPL and ESL, and FSL

and SSL– of the connector (on the side airbag sensorassy side) between the airbag sensor assy center and theside airbag sensor assy (LH).

(c) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the side air-bag sensor assy (LH), measure the resistance betweenVUPL and ESL, and between FSL and SSL–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY LH)

OK

5 CHECK SIDE AIRBAG SENSOR ASSY(LH) CIRCUIT(TO GROUND)(AIRBAGSENSOR ASSY CENTER – SIDE AIRBAG SENSOR ASSY LH)

(a) Disconnect the connection between VUPL and ESL, andbetween FSL and SSL–.

(b) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the side air-bag sensor assy (LH), measure the resistance betweeneach terminal of VUPL, SSL– and FSL, and body ground.OK:Resistance: 1M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY LH)

OK

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H01010

C81676

H01010

C81676 H40447VUPL

SideAirbagSensorAssy LH

Airbag Sensor Assy Center

ESL

FSL

SSL–

H01010

C81676

H01010

C81676 H40447VUPL

SideAirbagSensorAssy LH

Airbag Sensor Assy Center

ESL

FSL

SSL–

05–532–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

697Author: Date:

2004 COROLLA (RM1037U)

6 CHECK SIDE AIRBAG SENSOR ASSY(LH) CIRCUIT(AIRBAG SENSOR ASSYCENTER – SIDE AIRBAG SENSOR ASSY LH)

(a) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the side air-bag sensor assy (LH), measure the resistance betweenVUPL and ESL, and between FSL and SSL–.OK:Resistance: 1M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY LH)

OK

7 CHECK SIDE AIRBAG SENSOR ASSY(LH) CIRCUIT(TO B+)(AIRBAG SENSORASSY CENTER – SIDE AIRBAG SENSOR ASSY LH)

(a) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(b) Turn the ignition switch to ON.(c) For the connector (on the airbag sensor assy center side)

between the airbag sensor assy center and the side air-bag sensor assy (LH), measure the voltage betweeneach terminal of VUPL, SSL– and FSL, and body ground.OK:Voltage: Below 1V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE NO.3(AIRBAG SENSOR ASSY CENTER –SIDE AIRBAG SENSOR ASSY LH)

OK

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H01007

H10600 H01065

H01066 H41931

DLC3

CGTc

DTC B1141/33

Airbag Sensor Assy Center

SideAirbag SensorAssy RH

DTC B1140/32

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–533

698Author: Date:

2004 COROLLA (RM1037U)

8 CHECK SIDE AIR BAG SENSOR ASSY LH

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the airbag sensor assy center connector.(d) Interchange the side airbag sensor assy (LH) and RH and

connect the connectors to them.(e) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:(A): DTC B1140/32 is not output.(B): DTC B1141/33 is not output.

NG(A) REPLACE SIDE AIR BAG SENSOR ASSY LH

NG(B) REPLACE AIR BAG SENSOR ASSY CENTER

OK

9 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H42003

Airbag Sensor Assy Center

A12 LSP+

LSP–A12

B6Seat Position Airbag Sensor

3

4

G–W

R–B

4

5

05–534–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

699Author: Date:

2004 COROLLA (RM1037U)

DTC B1153/25 SEAT POSITION AIRBAG SENSORMALFUNCTION

CIRCUIT DESCRIPTIONThe seat position sensor circuit consists of the airbag sensor assy center and seat position sensor.DTC B1153/25 is recorded when a malfunction is detected in the seat position sensor circuit.

DTC No. DTC Detecting Condition Trouble Area

B1153/25

Short circuit between LSP+ wire harness and LSP– wireharness (to B+)

Short circuit between LSP+ wire harness and LSP– wireharness (to ground)

Open circuit in LSP+ wire harness or LSP– wire harnessSeat position airbag sensor malfunctionAirbag sensor assy center malfunction

Seat position airbag sensorAirbag sensor assy centerWire harness (Seat position airbag sensor – Front seat inner

belt assy) Instrument panel wire No.3

WIRING DIAGRAM

055ZA–04

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H02757

H10600 C91522 H41990

Seat Position Airbag Sensor

Airbag SensorAssyCenter

DLC3

CG Tc

DTC B1153/25

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–535

700Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK SEAT POSITION AIR BAG SENSOR

SST 09843–18040(a) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(b) Clear the DTC stored in memory (See page 05–424).(c) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(d) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(e) Check the DTC (See page 05–424).

OK:DTC B1153/25 is not output.

HINT:Codes other than code B1153/25 may be output at this time, butthey are not relevant to this check.

OK USE SIMULATION METHOD TO CHECK

NG

2 CHECK AIRBAG SENSOR ASSY CENTER CONNECTOR

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(c) Check that the connector is properly connected to the airbag sensor assy center.

NG CONNECT CONNECTORS

OK

3 CHECK SEAT POSITION AIRBAG SENSOR CONNECTOR

(a) Check that the connector is properly connected to the seat position airbag sensor.

NG CONNECT CONNECTORS

OK

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H03353

C91524 C91525 H41988

AirbagSensorAssyCenter

LSP+LSP–

Seat PositionAirbagSensor

H03355C91525 H41989

AirbagSensorAssyCenter

LSP+LSP–

Seat PositionAirbagSensor

05–536–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

701Author: Date:

2004 COROLLA (RM1037U)

4 CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (OPEN)(AIRBAG SENSORASSY CENTER – SEAT POSITION AIRBAG SENSOR)

SST 09843–18040(a) Disconnect the connectors between the airbag sensor

assy center and the seat position airbag sensor.(b) Using a service wire, connect LSP+ and LSP– of the con-

nector (on the seat position airbag sensor side) betweenthe airbag sensor assy center and the seat position airbagsensor.

(c) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the seat posi-tion airbag sensor, measure the resistance betweenLSP+ and LSP–.OK:Resistance: Below 1 Ω

NG Go to step 10

OK

5 CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (TO GROUND)(AIRBAGSENSOR ASSY CENTER – SEAT POSITION AIRBAG SENSOR)

(a) Release the service wire of the connector (on the seatposition airbag sensor side) between the seat position air-bag sensor and the airbag sensor assy center.

(b) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the seat posi-tion airbag sensor, measure the resistance between bodyground and each of LSP+ and LSP–.OK:Resistance: 1 M Ω or Higher

NG Go to step 11

OK

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H03355C91525 H41989

AirbagSensorAssyCenter

LSP+LSP–

Seat PositionAirbagSensor

H03355C91525 H41989

AirbagSensorAssyCenter

LSP+LSP–

Seat PositionAirbagSensor

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–537

702Author: Date:

2004 COROLLA (RM1037U)

6 CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT(AIRBAG SENSOR ASSYCENTER – SEAT POSITION AIRBAG SENSOR)

(a) For the connector (on the airbag sensor assy center side)between the airbag sensor assy center and the seat posi-tion airbag sensor, measure the resistance betweenLSP+ and LSP–.OK:Resistance: 1 M Ω or Higher

NG Go to step 12

OK

7 CHECK SEAT POSITION AIRBAG SENSOR CIRCUIT (TO B+)(AIRBAG SENSORASSY CENTER – SEAT POSITION AIRBAG SENSOR)

(a) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(b) Turn the ignition switch to ON.(c) For the connector (on the airbag sensor assy center side)

between the airbag sensor assy center and the seat posi-tion airbag sensor, measure the voltage between thebody ground and each of LSP+ and LSP–.OK:Voltage: Below 1 V

NG Go to step 13

OK

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H02757

H10600 C91522 H41990

Airbag SensorAssyCenter

DLC3

CG Tc

DTC B1153/25

Seat PositionAirbagSensor

05–538–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

703Author: Date:

2004 COROLLA (RM1037U)

8 CHECK SEAT POSITION AIR BAG SENSOR

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connectors of the seat position airbag sensor

and the airbag sensor assy center.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC D1153/25 is not output.

HINT:Codes other that code B1153/25 may be output at this time, butthey are not relevant to this check.

NG REPLACE SEAT POSITION AIR BAG SENSOR

OK

USE SIMULATION METHOD TO CHECK

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H02757

H10600 C91522 H41990

Airbag SensorAssyCenter

DLC3

CG Tc

DTC B1153/25

Seat PositionAirbagSensor

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–539

704Author: Date:

2004 COROLLA (RM1037U)

9 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector of a new seat position airbag sen-

sor.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC D1153/25 is not output.

HINT:Codes other that code B1153/25 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H03352

C91524 C91530 H42101

Airbag Sensor Assy Center

LSP+

LSP–

Seat PositionAirbagSensor

Front Seat Wire

C91530

H03354

H42102

Airbag Sensor Assy Center

LSP+

LSP–

Seat PositionAirbagSensor

Front Seat Wire

05–540–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

705Author: Date:

2004 COROLLA (RM1037U)

10 CHECK WIRE HARNESS(SEAT POSITION AIRBAG SENSOR – FRONT SEATINNER BELT ASSY)

SST 09843–18040(a) Disconnect the front seat wire connector on the airbag

sensor assy center side.(b) For the front seat wire connector (on the airbag sensor

assy center side) between the airbag sensor assy centerand the seat position airbag sensor, measure the resis-tance between LSP+ and LSP–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE WIRE HARNESS(SEATPOSITION SENSOR – FRONT SEAT INNERBELT ASSY)

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY)

11 CHECK WIRE HARNESS(SEAT POSITION AIRBAG SENSOR – FRONT SEATINNER BELT ASSY)

(a) Disconnect the front seat wire connector on the airbagsensor assy center side.

(b) For the front seat wire connector (on the airbag sensorassy center side) between the airbag sensor assy centerand the seat position sensor, measure the resistance be-tween body ground and each of LSP+ and LSP–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE WIRE HARNESS(SEATPOSITION SENSOR – FRONT SEAT INNERBELT ASSY)

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY)

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C91530

H03354

H42102

Airbag Sensor Assy Center

LSP+

LSP–

Seat PositionAirbagSensor

Front Seat Wire

C91530

H03354

H42102

Seat Position Sensor

Airbag Sensor Assy Center

LSP+

LSP–

Front Seat Wire

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–541

706Author: Date:

2004 COROLLA (RM1037U)

12 CHECK WIRE HARNESS(SEAT POSITION AIRBAG SENSOR – FRONT SEATINNER BELT ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the front seat wire connector on the airbagsensor assy center side.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 60 se-conds.

(e) For the front seat wire connector (on the airbag sensorassy center side) between the front seat inner belt assyand the seat position airbag sensor, measure the voltagebetween body ground and each of LSP+ and LSP–.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE WIRE HARNESS(SEATPOSITION AIRBAG SENSOR – FRONT SEAT IN-NER BELT ASSY)

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY)

13 CHECK WIRE HARNESS(SEAT POSITION AIRBAG SENSOR – FRONT SEATINNER BELT ASSY)

(a) Turn the ignition switch to LOCK.(b) For the front seat wire connector (on the airbag sensor

assy center side) between the airbag sensor assy centerand the seat position sensor, measure the resistance be-tween LSP+ and LSP–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE WIRE HARNESS(SEATPOSITION AIRBAG SENSOR – FRONT SEAT IN-NER BELT ASSY)

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE NO.3(AIRBAG SENSOR ASSY CENTER –FRONT SEAT INNER BELT ASSY)

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H02750

9A13 +SRIA1

B–W

–SRA13

20

1

2

B–W

BR–W BR–W

2

1

+SR

–SR

Airbag Sensor Assy CenterA6Airbag Front RH Sensor

IA1

05–542–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

707Author: Date:

2004 COROLLA (RM1037U)

DTC B1156/15 FRONT AIRBAG SENSOR (RH)MALFUNCTION

DTC B1157/15 FRONT AIRBAG SENSOR (RH)MALFUNCTION

CIRCUIT DESCRIPTIONThe airbag front RH sensor circuit consists of the airbag sensor assy center and airbag front RH sensor.DTC B1156/B1157/15 is recorded when a malfunction is detected in the airbag front RH sensor circuit.

DTC No. DTC Detecting Condition Trouble Area

B1156/B1157/15 Airbag front RH sensor malfunction

Airbag front RH sensorAirbag sensor assy center Instrument panel wireEngine room main wire

WIRING DIAGRAM

057US–02

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H03355C81408H03355C81408 H40069

Airbag Sensor Assy Center

+SR

–SR

AirbagFront RHSensor

H03355C81408H03355C81408 H40069

+SR

–SR

Airbag Sensor Assy Center

AirbagFront RHSensor

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–543

708Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO B+)(AIRBAG SENSOR ASSYCENTER – AIRBAG FRONT RH SENSOR)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag front RHsensor and the airbag sensor assy center.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the airbag sensor assy center side)

between the airbag front RH sensor and the airbag sen-sor assy center, measure the voltage between bodyground and each of +SR and –SR.OK:Voltage: Below 1 V

NG Go to step 6

OK

2 CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT (TO GROUND)(AIRBAG SENSORASSY – AIRBAG FRONT RH SENSOR)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) For the connector (on the airbag sensor assy center side)

between the airbag front RH sensor and the airbag sen-sor assy center, measure the resistance between bodyground and each of +SR and –SR.OK:Resistance: 1 M Ω or Higher

NG Go to step 7

OK

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H03353

C81408H08016 H41800

+SR

–SR

Airbag Sensor Assy Center

AirbagFront RHSensor

C54743C54743 H40071

+SR –SR

05–544–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

709Author: Date:

2004 COROLLA (RM1037U)

3 CHECK FRONT AIRBAG SENSOR (RH) CIRCUIT(OPEN)(AIRBAG SENSOR ASSYCENTER – AIRBAG FRONT RH SENSOR)

SST 09843–18040(a) Using a service wire, connect +SR and –SR of the con-

nector (on the airbag front RH sensor side) between theairbag front RH sensor and the airbag sensor assy center.

(b) For the connector (on the airbag sensor assy center side)between the airbag front RH sensor and the airbag sen-sor assy center, measure the resistance between +SRand –SR.OK:Resistance: Below 1 Ω

NG Go to step 8

OK

4 INSPECT AIR BAG FRONT RH SENSOR

(a) For the connector of the airbag front RH sensor, measurethe resistance between +SR and –SR.OK:Resistance: 820 Ω

NG REPLACE AIR BAG FRONT RH SENSOR

OK

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H02757

H10600 H01063

H02757

H10600 H01063 H40072

DTC B1156/B1157/15DLC3

TcCG

Airbag Sensor Assy Center

AirbagFront RHSensor

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–545

710Author: Date:

2004 COROLLA (RM1037U)

5 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(b) Connect the airbag front RH sensor connector and airbag

sensor assy center connector.(c) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(d) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1156/B1157/15 is not output.

HINT:Codes other than code B1156/B1157/15 may be output at thistime, but they are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H41804

+SR–SR

Airbag Sensor Assy Center

AirbagFront RHSensor

Engine RoomMain Wire

H41804

+SR–SR

Airbag Sensor Assy Center

AirbagFront RHSensor

Engine RoomMain Wire

05–546–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

711Author: Date:

2004 COROLLA (RM1037U)

6 CHECK ENGINE ROOM MAIN WIRE HARNESS (TO B+)(CONNECTOR – AIRBAGFRONT RH SENSOR)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Disconnect the connector between the engine room main

wire and the instrument panel wire.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON.(f) For the engine room main wire connector (on the airbag

sensor assy center side) between the airbag sensor assycenter and the airbag front RH sensor, measure the volt-age between body ground and each of +SR and –SR.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

7 CHECK ENGINE ROOM MAIN WIRE HARNESS (TO GROUND)(CONNECTOR –AIRBAG FRONT RH SENSOR)

(a) Disconnect the connectors between the engine roommain wire and the instrument panel wire.

(b) For the engine room main wire connector (on the airbagsensor assy center side) between the airbag sensor assycenter and the airbag front RH sensor, measure the resis-tance between body ground and each of +SR and –SR.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

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H41945

Airbag

Front

RH Sensor

Airbag Sensor Assy Center

+SR–SR

Engine RoomMain Wire

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–547

712Author: Date:

2004 COROLLA (RM1037U)

8 CHECK ENGINE ROOM MAIN WIRE HARNESS(OPEN)(CONNECTOR – AIRBAGFRONT RH SENSOR)

SST 09843–18040(a) Disconnect the connectors between the engine room

main wire and the instrument panel wire.(b) Using a service wire, connect +SR and –SR of the engine

room main wire connector (on the airbag front RH sensorside) between the airbag sensor assy center and the air-bag front RH sensor.

(c) For the engine room main wire connector (on the airbagsensor assy center side) between the airbag sensor assycenter and the airbag front RH sensor, measure the resis-tance between the +SR and –SR.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

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H02750

Airbag Sensor Assy Center

+SL

–SL

A13

15

26

W–R

BR

IA13

4

A5Airbag Sensor Front LH

2

1A13

+SL

–SL

W–R

BRIA1

05–548–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

713Author: Date:

2004 COROLLA (RM1037U)

DTC B1158/16 FRONT AIRBAG SENSOR (LH)MALFUNCTION

DTC B1159/16 FRONT AIRBAG SENSOR (LH)MALFUNCTION

CIRCUIT DESCRIPTIONThe airbag sensor front LH circuit consists of the airbag sensor assy center and airbag sensor front LH. DTC B1158/B1159/16 is recorded when malfunction is detected in the airbag sensor front LH circuit.

DTC No. DTC Detecting Condition Trouble Area

B1158/B1159/16 Airbag sensor front LH malfunction

Airbag sensor front LHAirbag sensor assy center Instrument panel wireEngine room main wire

WIRING DIAGRAM

057UT–02

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H03355C81408H03355C81408 H40069

Airbag Sensor Assy Center

+SL

–SL

AirbagSensorFront LH

H03355C81408H03355C81408 H40069

Airbag Sensor Assy Center

+SL

–SL

AirbagSensorFront LH

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–549

714Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT (TO B+)(AIRBAG SENSOR ASSYCENTER – AIRBAG SENSOR FRONT LH)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the airbag sensor front LH.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the airbag sensor assy center side)

between the airbag sensor front LH and the airbag sensorassy center, measure the voltage between body groundand each of +SL and –SL.OK:Voltage: Below 1 V

NG Go to step 6

OK

2 CHECK FRONT AIRBAG SENSOR(LH) CIRCUIT(TO GROUND)(AIRBAG SENSORASSY CENTER – AIRBAG SENSOR FRONT LH)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) For the connector (on the airbag sensor assy center side)

between the airbag sensor front LH and the airbag sensorassy center, measure the resistance between bodyground and each of +SL and –SL.OK:Resistance: 1 M Ω or Higher

NG Go to step 7

OK

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H03353

H03360 H08016 H41802

+SL

–SL

Airbag Sensor Assy Center

AirbagSensorFront LH

C54743C54743 H40071

–SL+SL

05–550–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

715Author: Date:

2004 COROLLA (RM1037U)

3 CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT(OPEN)(AIRBAG SENSOR ASSYCENTER – AIRBAG SENSOR FRONT LH)

(a) Using a service wire, connect +SL and –SL of the connec-tor (on the airbag sensor front LH side) between the air-bag sensor assy center and the airbag sensor front LH.

(b) For the connector (on the airbag sensor assy center side)between the airbag sensor front LH and the airbag sensorassy center, measure the resistance between +SL and–SL.OK:Resistance: Below 1 Ω

NG Go to step 8

OK

4 INSPECT AIR BAG SENSOR FRONT LH

(a) For the connector of the airbag sensor front LH, measurethe resistance between +SL and –SL.OK:Resistance: 820 Ω

NG REPLACE AIR BAG SENSOR FRONT LH

OK

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H02757

H10600 H01064

H02757

H10600 H01064 H40075

DLC3

CG Tc

DTC B1158/B1159/16

Airbag Sensor Assy Center

AirbagSensorFront LH

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–551

716Author: Date:

2004 COROLLA (RM1037U)

5 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(b) Connect the airbag sensor front LH connector and airbag

sensor assy center connector.(c) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(d) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1158/B1159/16 is not output.

HINT:Codes other than code B1158/B1159/16 may be output at thistime, but they are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H03354

H40556 H40558

+SL–SL

Airbag Sensor Assy Center

AirbagSensor Front LH

Engine RoomMain Wire

H03354

H40556 H40558

+SL–SL

Airbag Sensor Assy Center

AirbagSensor Front LH

Engine RoomMain Wire

05–552–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

717Author: Date:

2004 COROLLA (RM1037U)

6 CHECK ENGINE ROOM MAIN WIRE HARNESS (TO B+)(CONECTOR – AIRBAGSENSOR FRONT LH)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Disconnect the connector between the engine room main

wire and the instrument panel wire.(d) Connect the negative (–) terminal to the battery, and wait

at least for 2 seconds.(e) Turn the ignition switch to ON.(f) For the engine room main wire connector (on the airbag

sensor assy center side) between the airbag sensor assycenter and the airbag sensor front LH, measure the volt-age between body ground and each of +SL and –SL.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

7 CHECK ENGINE ROOM MAIN WIRE HARNESS (TO GROUND)(CONNECTOR –AIRBAG SENSOR FRONT LH)

(a) Disconnect the connectors between the engine roommain wire and the instrument panel wire.

(b) For the engine room main wire connector (on the airbagsensor assy center side) between the airbag sensor assycenter and the airbag sensor front LH, measure the resis-tance between body ground and each of +SL and –SL.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

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H03352

H40556H08016 H41801

Airbag

Sensor

Front LH

Airbag Sensor Assy Center

+SL–SL

Engine RoomMain Wire

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–553

718Author: Date:

2004 COROLLA (RM1037U)

8 CHECK ENGINE ROOM MAIN WIRE HARNESS(OPEN)(CONNECTOR – AIRBAGSENSOR FRONT LH)

(a) Disconnect the connectors between the engine roommain wire and the instrument panel wire.

(b) Using a service wire, connect +SL and –SL of the engineroom main wire connector (on the airbag sensor front LHside) between the airbag sensor assy center and the air-bag sensor front LH.

(c) For the engine room main wire connector (on the airbagsensor assy center side) between the airbag sensor assycenter and the airbag sensor front LH, measure the resis-tance between +SL and –SL.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE ENGINE ROOM MAINWIRE

OK

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

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H01451

Airbag Sensor Assy Center

A16D Squib (2nd step)

Spiral Cable Sub–Assy

Y–O

Y–VD2+

D2–

4A13

3A1317

16D+

D–

05–554–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

719Author: Date:

2004 COROLLA (RM1037U)

DTC B1180/17 SHORT IN D SQUIB (2ND STEP) CIRCUIT

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B1180/17 is recorded when a short is detected in the D squib circuit (2nd step).

DTC No. DTC Detecting Condition Trouble Area

B1180/17

Short circuit between D2+ wire harness and D2– wireharness of squib (2nd step)

D squib (2nd step) malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib, 2nd step)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAM

055ZL–04

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H01001

C89244 H41475

D Squib AirbagSensorAssyCenter

Spiral Cable Sub–Assy

Color: Black

H01002

H10600 C89246 H42137

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

DLC3

CG Tc

DTC B1180/17

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–555

720Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the horn button assy.

(c) Release the airbag activation prevention mechanism ofthe connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the spiral cablesub–assy (See page 05–424).

(d) For the black connector (on the spiral cable sub–assyside ) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: 1 M Ω or Higher

NG Go to step 4

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B1180/17 is not output.

HINT:Codes other than code B1180/17 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 C89246 H42138

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

DLC3

CG Tc

DTC B1180/17

H01004H41424 H41478

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

05–556–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

721Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1180/17 is not output.

HINT:Codes other than code B1180/17 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

USE SIMULATION METHOD TO CHECK

4 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) Release the airbag activation prevention mechanism of

the connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the spiral cablesub–assy (See page 05–424).

(c) For the connector (on the spiral cable sub–assy side) be-tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

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H01000C89244 H41479

D Squib AirbagSensorAssyCenter

Spiral Cable Sub–Assy

Color: Black

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–557

722Author: Date:

2004 COROLLA (RM1037U)

5 CHECK SPIRAL CABLE SUB–ASSY

(a) Release the airbag activation prevention mechanism ofthe spiral cable sub–assy connector on the airbag sensorassy center side (See page 05–424).

(b) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: 1 M Ω or Higher

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01001

C89244 H41475

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

05–558–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

723Author: Date:

2004 COROLLA (RM1037U)

DTC B1181/18 OPEN IN D SQUIB (2ND STEP) CIRCUIT

CIRCUIT DESCRIPTIONThe D squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B1181/18 is recorded when an open is detected in the D squib circuit (2nd step).

DTC No. DTC Detecting Condition Trouble Area

B1181/18

Open circuit in D+ wire harness or D– wire harness of squibD squib (2nd step) malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib, 2nd step)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–554.

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the horn button assyand the airbag sensor assy center.

(c) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: Below 1 Ω

NG Go to step 4

OK

055ZM–04

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H01002

H10600

C89252

C89253H42139

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

DLC3

CG Tc

DTC B1181/18

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–559

724Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect D2+ and D2– of the black

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1181/18 is not output.

HINT:Codes other than code B1181/18 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 C89253 H42140

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

DLC3

CG Tc

DTC B1181/18

H01004H41424 H41478

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

05–560–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

725Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1181/18 is not output.

HINT:Codes other than code B1181/18 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

USE SIMULATION METHOD TO CHECK

4 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) For the connector (on the spiral cable sub–assy side) be-

tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

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H01000C89244 H41479

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–561

726Author: Date:

2004 COROLLA (RM1037U)

5 CHECK SPIRAL CABLE SUB–ASSY

(a) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andD2–.OK:Resistance: Below 1 Ω

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

USE SIMULATION METHOD TO CHECK

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H01001

C89244 H41475

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

05–562–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

727Author: Date:

2004 COROLLA (RM1037U)

DTC B1182/19 SHORT IN D SQUIB (2ND STEP) CIRCUIT(TO GROUND)

CIRCUIT DESCRIPTIONThe D squib (2nd step) circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn but-ton assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B1182/19 is recorded when a ground short is detected in the D squib (2nd step) circuit.

DTC No. DTC Detecting Condition Trouble Area

B1182/19

Short circuit in D squib (2nd step) wire harness (toground)

D squib (2nd step) malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib, 2nd step)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–554.

INSPECTION PROCEDURE

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connector between the airbag sensorassy center and the horn button assy.

(c) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andbody ground.OK:Resistance: 1 M Ω or Higher

NG Go to step 5

OK

055ZN–05

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H01002

C89252

H10600 C91338 H42141

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

DLC3

CG Tc

DTC B1182/19

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–563

728Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect D2+ and D2– of the black

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait t least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1182/19 is not output.

HINT:Codes other than code B1182/19 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 C89253 H42142

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

DLC3

CG Tc

DTC B1182/19

05–564–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

729Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1182/19 is not output.

HINT:Codes other than code B1182/19 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01004H41424 H41478

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

H01000C89244 H41479

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–565

730Author: Date:

2004 COROLLA (RM1037U)

5 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Disconnect the connector of the instrument panel wire.(b) For the connector (on the spiral cable sub–assy side) be-

tween the airbag sensor assy center and the spiral cablesub–assy, measure the resistance between D2+ andbody ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

6 CHECK SPIRAL CABLE SUB–ASSY

(a) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the resistance between D2+ andbody ground.OK:Resistance: 1 M Ω or Higher

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

7 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01001

C89244 H41475

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

05–566–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

731Author: Date:

2004 COROLLA (RM1037U)

DTC B1183/22 SHORT IN D SQUIB (2ND STEP) CIRCUIT(TO B+)

CIRCUIT DESCRIPTIONThe D squib (2nd step) circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn but-ton assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied.DTC B1183/22 is recorded when a B+ short is detected in the D squib (2nd step) circuit.

DTC No. DTC Detecting Condition Trouble Area

B1183/22

Short circuit in D squib (2nd step) wire harness (to B+)D squib (2nd step) malfunctionSpiral cable sub–assy malfunctionAirbag sensor assy center malfunction

Horn button assy (D squib, 2nd step)Spiral cable sub–assyAirbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–424.

CIRCUIT INSPECTION

1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – HORN BUTTONASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the horn button assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the black connector (on the spiral cable sub–assy

side) between the horn button assy and the spiral cablesub–assy, measure the voltage between D2+ and bodyground.OK:Voltage: Below 1 V

NG Go to step 5

OK

055ZO–04

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H01002

C89252

H10600 C91342 H42143

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

DLC3

CG Tc

DTC B1183/22

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–567

732Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect D2+ and D2– of the black

connector (on the spiral cable sub–assy side) betweenthe horn button assy and the spiral cable sub–assy.

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B1183/22 is not output.

HINT:Codes other than code B1183/22 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H01003

H10600 C91342 H42144

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

DLC3

CG Tc

DTC B1183/22

05–568–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

733Author: Date:

2004 COROLLA (RM1037U)

3 CHECK D SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1183/22 is not output.

HINT:Codes other than code B1183/22 may be output at this time, butthey are not relevant to this check.

NG REPLACE HORN BUTTON ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01004H41424 H41478

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

H01000C89244 H41479

D Squib AirbagSensorAssyCenter

SpiralCableSub–Assy

Color: Black

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–569

734Author: Date:

2004 COROLLA (RM1037U)

5 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSY CENTER – SPIRALCABLE SUB–ASSY)

(a) Turn the ignition switch to LOCK.(b) Disconnect the connector of the instrument panel wire.(c) Turn the ignition switch to ON.(d) For the connector (on the spiral cable sub–assy side) be-

tween the horn button assy and the spiral cable sub–assy,measure the voltage between D2+ and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE(AIRBAG SENSOR ASSY CENTER – SPI-RAL CABLE SUB–ASSY)

OK

6 CHECK SPIRAL CABLE SUB–ASSY

(a) For the black connector (on the spiral cable sub–assyside) between the horn button assy and the spiral cablesub–assy, measure the voltage between D2+ and bodyground.OK:Voltage: Below 1 V

NG REPLACE SPIRAL CABLE SUB–ASSY

OK

7 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H01454

A15P Squib (2nd step)

Airbag Sensor Assy Center

Y–GR

Y–P

3

4

8P2+A13

P2–7

A13

P+

P–

05–570–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

735Author: Date:

2004 COROLLA (RM1037U)

DTC B1185/57 SHORT IN P SQUIB (2ND STEP) CIRCUIT

CIRCUIT DESCRIPTIONThe P squib (2nd step) circuit consists of the airbag sensor assy center and instrument panel passengerairbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B1185/57 is recorded when a short is detected in the P squib (2nd step) circuit.

DTC No. DTC Detecting Condition Trouble Area

B1185/57

Short circuit between P2+ wire harness and P2– wire harness of squib.

P squib (2nd step) malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib, 2nd step)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAM

055ZP–04

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P2+

P2–

H01023

H10600 H16840 H41979

P Squib AirbagSensorAssyCenter

DTC B1185/57DLC3

CG Tc

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–571

736Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) Release the airbag activation prevention mechanism ofthe connector (on the airbag sensor assy center side) be-tween the airbag sensor assy center and the instrumentpanel passenger airbag assy (See page 05–424).

(d) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P2+ and P2–.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(c) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(d) Clear the DTC stored in memory (See page 05–424).(e) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(f) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(g) Check the DTC (See page 05–424).

OK:DTC B1185/57 is not output.

HINT:Codes other than code B1185/57 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H16840 H41980

P Squib AirbagSensorAssyCenter

DTC B1185/57DLC3

CG Tc

05–572–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

737Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1185/57 is not output.

HINT:Codes other than code B1185/57 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

USE SIMULATION METHOD TO CHECK

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P2+

P2–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–573

738Author: Date:

2004 COROLLA (RM1037U)

DTC B1186/58 OPEN IN P SQUIB (2ND STEP) CIRCUIT

CIRCUIT DESCRIPTIONThe P squib (2nd step) circuit consists of the airbag sensor assy center and instrument panel passengerairbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B1186/58 is recorded when an open is detected in the P squib circuit.

DTC No. DTC Detecting Condition Trouble Area

B1186/58

Open circuit in P2+ wire harness or P2– wire harness ofsquib (2nd step)

P squib (2nd step) malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib, 2nd step)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–570.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connectors between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P2+ and P2–.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

055ZQ–04

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H01023

H10600 H16841

H16853

H41981

P Squib AirbagSensorAssyCenter

DTC B1186/58DLC3

CG Tc

05–574–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

739Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect P2+ and P2– of the connec-

tor (on the instrument panel passenger airbag assy side)between the airbag sensor assy center and the instru-ment panel passenger airbag assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1186/58 is not output.

HINT:Codes other than code B1186/58 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H16841 H41982

AirbagSensorAssyCenter

P Squib

DTC B1186/58DLC3

CG Tc

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–575

740Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1186/58 is not output.

HINT:Codes other than code B1186/58 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

USE SIMULATION METHOD TO CHECK

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P2+

P2–

05–576–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

741Author: Date:

2004 COROLLA (RM1037U)

DTC B1187/55 SHORT IN P SQUIB (2ND STEP) CIRCUIT(TO GROUND)

CIRCUIT DESCRIPTIONThe P squib (2nd step) circuit consists of the airbag sensor assy center and instrument panel passengerairbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B1187/55 is recorded when ground short is detected in the P squib (2nd step) circuit.

DTC No. DTC Detecting Condition Trouble Area

B1187/55Short circuit in P squib (2nd step) wire harness (to ground)P squib malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib, 2nd step)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–570.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connector between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) For the connector (on the instrument panel passenger air-bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the resistance between P2+ and body ground.OK:Resistance: 1 M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

055ZR–04

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H01023

H10600 H16838

H16853

H41983

P Squib AirbagSensorAssyCenter

DTC B1187/55DLC3

CG Tc

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–577

742Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Connect the connector to the airbag sensor assy center.(b) Using a service wire, connect P2+ and P2– of the connec-

tor (on the instrument panel passenger airbag assy side)between the airbag sensor assy center and the instru-ment panel passenger airbag assy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(g) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(h) Check the DTC (See page 05–424).

OK:DTC B1187/55 is not output.

HINT:Codes other than code B1187/55 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H16838 H41984

P SquibAirbagSensorAssyCenter

DTC B1187/55DLC3

CG Tc

05–578–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

743Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1187/55 is not output.

HINT:Codes other than code B1187/55 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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R14286

H41424 H41932

P Squib AirbagSensorAssyCenter

P2+

P2–

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–579

744Author: Date:

2004 COROLLA (RM1037U)

DTC B1188/56 SHORT IN SQUIB (2ND STEP) CIRCUIT (TOB+)

CIRCUIT DESCRIPTIONThe P squib (2nd step) circuit consists of the airbag sensor assy center and instrument panel passengerairbag assy.It causes the SRS to deploy when the SRS deployment conditions are satisfied. DTC B1188/56 is recorded when a B+ short is detected in the P squib (2nd step) circuit.

DTC No. DTC Detecting Condition Trouble Area

B1188/56Short circuit in P squib (2nd step) wire harness (to B+)P squib (2nd step) malfunctionAirbag sensor assy center malfunction

Instrument panel passenger airbag assy (P squib, 2nd step)Airbag sensor assy center Instrument panel wire

WIRING DIAGRAMSee page 05–570.

INSPECTION PROCEDURE

1 CHECK P SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER – INSTRUMENTPANEL PASSENGER AIRBAG ASSY)

(a) Disconnect the negative (–) terminal cable from the bat-tery, and wait at least for 90 seconds.

(b) Disconnect the connector between the airbag sensorassy center and the instrument panel passenger airbagassy.

(c) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(d) Turn the ignition switch to ON.(e) For the connector (on the instrument panel passenger air-

bag assy side) between the airbag sensor assy centerand the instrument panel passenger airbag assy, mea-sure the voltage between P2+ and body ground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE

OK

055ZS–04

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H01023

H10600 H16839

H16853

H41985

P Squib AirbagSensorAssyCenter

DTC B1188/56DLC3

CG Tc

05–580–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

745Author: Date:

2004 COROLLA (RM1037U)

2 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the connector to the airbag sensor assy center.(d) Using a service wire, connect P2+ and P2– of the connec-

tor (on the instrument panel passenger airbag assy side)between the airbag sensor assy center and the instru-ment panel passenger airbag assy.

(e) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(f) Turn the ignition switch to ON, and wait at least for 20 se-conds.

(g) Clear the DTC stored in memory (See page 05–424).(h) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(i) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(j) Check the DTC (See page 05–424).

OK:DTC B1188/56 is not output.

HINT:Codes other than code B1188/56 may be output at this time, butthey are not relevant to this check.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

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H10600

H01024

H16839 H41986

P Squib AirbagSensorAssyCenter

DTC B1188/56DLC3

CG Tc

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–581

746Author: Date:

2004 COROLLA (RM1037U)

3 CHECK P SQUIB

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Connect the instrument panel passenger airbag assy

connector.(d) Connect the negative (–) terminal cable to the battery,

and wait at least for 2 seconds.(e) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(f) Clear the DTC stored in memory (See page 05–424).(g) Turn the ignition switch to LOCK, and wait at least for 20

seconds.(h) Turn the ignition switch to ON, and wait at least for 20 se-

conds.(i) Check the DTC (See page 05–424).

OK:DTC B1188/56 is not output.

HINT:Codes other than code B1188/56 may be output at this time, butthey are not relevant to this check.

NG REPLACE INSTRUMENT PANEL PASSENGERAIR BAG ASSY

OK

4 USE SIMULATION METHOD TO CHECK

NG Go to step 1

OK

REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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H42004

Engine Room R/B and J/B Airbag Sensor Assy Center

B B–R1A 11 2

MAIN

Instrument Panel J/B

B–R 2IA4IMIM

IL II

IF II

IH II

6 3

5 8

4 3

10 10

B–W

B–W

B

W–B

W–B

W–B

W–B

W–B

W–B

B–O

AM–2

AM2IG2A13

A13

A13

5

27

28

IG2

E1

E2

FL MAIN

Battery

I10Ignition SW

6 5

J6J/C

J7J/C

A A

IE IG

1

05–582–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

747Author: Date:

2004 COROLLA (RM1037U)

SOURCE VOLTAGE DROP

CIRCUIT DESCRIPTIONThe SRS is equipped with a voltage–increase circuit (DC–DC converter) in the airbag sensor assy centerin case the source voltage drops. When the battery voltage drops, the voltage–increase circuit (DC–DC converter) functions to increase thevoltage of the SRS to normal voltage. The diagnosis system malfunction display for this circuit is different from other circuits that is when the SRSwarning light remains lit up and the DTC is a normal code, source voltage drop is indicated. Malfunction in this circuit is not recorded in the airbag sensor assy center, and the source voltage returnsto normal, the SRS warning light automatically goes off.

DTC No. Diagnosis

(Normal) Source voltage drop

WIRING DIAGRAM

055ZT–07

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H40065

IG2

E2

E1

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–583

748Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 PREPARE FOR INSPECTION

(a) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(b) Remove the horn button assy (See page 60–13).(c) Disconnect the connector of the instrument panel passenger airbag assy (See page 60–26).(d) Disconnect the connector of the front seat airbag assy RH and LH (See page 60–32).(e) Disconnect the connector of the seat belt pretensioner RH and LH (See page 61–9).(f) Disconnect the connectors of the airbag sensor assy center (See page 60–38).(g) Disconnect the connector of the airbag front RH sensor and airbag sensor front LH (See page 60–40

and 60–42).(h) Disconnect the connector of the side airbag sensor assy RH and LH (See page 60–44).(i) Disconnect the connector of the seat position airbag sensor (See page 60–46).CAUTION:Store the horn button assy, instrument panel passenger airbag assy and front seat airbag assy withthe front surface facing upward.

2 CHECK SOURCE VOLTAGE

(a) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(b) Turn the ignition switch to ON, and wait at least for 60 se-conds.

(c) Measure the voltage between E1 (E2) and terminal IG2on the sensor and operate electric system (defogger, wip-er, headlight, heater blower, etc.).OK:Voltage: 10 – 14 V

NG REPAIR OR REPLACE HARNESS BETWEENBATTERY AND AIRBAG SENSOR ASSYCENTER,AND CHARGING SYSTEM

OK

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05–584–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

749Author: Date:

2004 COROLLA (RM1037U)

3 CHECK SRS WARNING LIGHT TURN OFF

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(c) Connect the horn button assy connectors.(d) Connect the instrument panel passenger airbag assy connector.(e) Connect the front seat airbag assy RH and LH connectors.(f) Connect the seat belt pretensioner RH and LH connectors.(g) Connect the airbag sensor assy center connectors.(h) Connect the front airbag sensor RH and LH connectors.(i) Connect the side airbag sensor assy RH and LH connectors.(j) Connect the seat position airbag sensor connector.(k) Connect the negative (–) terminal cable to the battery.(l) Turn the ignition switch to ON, and wait at least for 60 seconds.(m) Operate electric system (defogger, wiper headlight, heater blower, etc.) and check that SRS warning

light goes off.OK:SRS warning light is not light up.

NG REPAIR OR REPLACE HARNESS BETWEENBATTERY AND AIRBAG SENSOR ASSYCENTER,AND CHARGING SYSTEM

OK

4 CHECK AIR BAG SENSOR ASSY CENTER

SST 09843–18040(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(c) Connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.(d) Turn the ignition switch to ON, and wait at least for 20 seconds.(e) Clear the DTC stored in memory (See page 05–424).(f) Turn the ignition switch to LOCK, and wait at least for 20 seconds.(g) Turn the ignition switch to ON, and wait at least for 20 seconds.(h) Check the DTC (See page 05–424).

OK:DTC is not output.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

USE SIMULATION METHOD TO CHECK

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H42005

Instrument Panel J/B

LAA13

3B–Y

W–B

5

E1

1

27

Engine Room R/B and J/B

IA4

B

I10 Ignition SW

6

FL MAIN

Battery

E228

W–B

2

2

II

B

IH

14

1A

3A13

A13

4C

B–RB

39

8 5

4

B–Y

1

W–B

Airbag Sensor Assy Center

II

II

MAINB–R

4C

4B 4B

15

18 21IJ

IF

IK

IM IM

IL

AM2

AM2

IG2

W–B

3

B–OB–Y

W–B

32

51

10 10

A A

A

IE IG

J6J/C

J7J/C

B–W 6

W–B

SRS

C9Combination Meter

1 2

Center J/B

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–585

750Author: Date:

2004 COROLLA (RM1037U)

SRS WARNING LIGHT CIRCUIT MALFUNCTION (ALWAYS LIGHTUP, WHEN DTC IS NOT OUTPUT)

CIRCUIT DESCRIPTIONThe SRS warning light is located on the combination meter. When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch isturned from the LOCK position to ON position, and then turns off automatically. If there is a malfunction in the SRS, the SRS warning light lights up to inform the driver of the abnormality.When terminals Tc and CG of the DLC3 are connected, the DTC is displayed by blinking the SRS warninglight.

WIRING DIAGRAM

055ZU–05

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H42000

H41993

SW

05–586–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

751Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK CONNECTOR

(a) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(b) Check the connection of the combination meter connector and the airbag sensor assy center connec-

tors.OK:The connectors are connected.

NG CONNECT CONNECTORS

OK

2 CHECK COMBINATION METER ASSY

(a) Disconnect the connector from the combination meter.

(b) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(c) Turn the ignition switch to ON, and wait at least for 6 se-conds.

(d) Measure the voltage between SW and body ground.OK:Voltage: Above 8 V

NG REPLACE COMBINATION METER ASSY

OK

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H40065

LA

H41994

Airbag Sensor Assy Center:

Combination Meter:

LA

SW

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–587

752Author: Date:

2004 COROLLA (RM1037U)

3 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSYCENTER–COMBINATION METER ASSY)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Disconnect the connector from the airbag sensor assy

center.(d) Measure the resistance between LA and body ground.

OK:Resistance: 1M Ω or Higher

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE (AIRBAG SENSOR ASSY CENTER – COM-BINATION METER ASSY)

OK

REPLACE AIR BAG SENSOR ASSY CENTER

4 CHECK INSTRUMENT PANEL WIRE(AIRBAG SENSOR ASSYCENTER–COMBINATION METER ASSY)

(a) For the connector (on the airbag sensor assy center side)between the combination meter and the airbag sensorassy center, measure the resistance between SW andLA.OK:Resistance: Below 1 Ω

NG REPAIR OR REPLACE INSTRUMENT PANELWIRE (AIRBAG SENSOR ASSY CENTER – COM-BINATION METER ASSY)

OK

REPLACE AIR BAG SENSOR ASSY CENTER

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05–588–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

753Author: Date:

2004 COROLLA (RM1037U)

SRS WARNING LIGHT CIRCUIT MALFUNCTION (DOES NOT LIGHTUP, WHEN IGNITION SWITCH IS TURNED TO ON)

CIRCUIT DESCRIPTIONThe SRS warning light is located on the combination meter.When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch isturned from the LOCK position to ON position, and then turns off automatically.If there is a malfunction is the SRS, the SRS warning light lights up to inform the driver of the abnormality.When terminals Tc and CG of the DLC3 are connected, the DTC is displayed by blinking the SRS warninglight.

WIRING DIAGRAMSee page 05–585.

INSPECTION PROCEDURE

1 CHECK SOURCE VOLTAGE

(a) Measure the voltage of the battery.OK:Voltage: 10 – 14 V

NG REPAIR OR REPLACE HARNESS BETWEENBATTERY AND AIRBAG SENSOR ASSYCENTER,AND CHARGING SYSTEM

OK

2 CHECK AIR BAG SENSOR ASSY CENTER

(a) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.(b) Disconnect the connectors from the airbag sensor assy center.(c) Connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.(d) Turn the ignition switch to ON.(e) Check SRS warning light light up in the combination meter assy.

OK:Not SRS warning light light up.

NG REPLACE AIR BAG SENSOR ASSY CENTER

OK

055ZV–04

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H42000

H41994

Airbag Sensor Assy Center:

Combination Meter:

LA

SW

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–589

754Author: Date:

2004 COROLLA (RM1037U)

3 CHECK WIRE HARNESS(COMBINATION METER ASSY – AIRBAG SENSOR ASSYCENTER)

(a) Turn the ignition switch to LOCK.(b) Disconnect the negative (–) terminal cable from the bat-

tery, and wait at least for 90 seconds.(c) Disconnect the connector from the combination meter.

(d) Connect the negative (–) terminal cable to the battery,and wait at least for 2 seconds.

(e) Turn the ignition switch to ON.(f) For the connector (on the airbag sensor assy center side)

between the airbag sensor assy center and the combina-tion meter, measure the voltage between LA and bodyground.OK:Voltage: Below 1 V

NG REPAIR OR REPLACE HARNESS BETWEENAIRBAG SENSOR ASSY CENTER ANDCOMBINATION METER ASSY

OK

REPAIR OR REPLACE COMBINATION METER ASSY OR WIRE HARNESS BETWEENCOMBINATION METER ASSY AND BATTERY

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H42006

Airbag Sensor Assy Center

A13 Tc

19P–B

W–B

IIIJ14

IE

4B

4C

4B

53

16 21

P–B

W–B

Tc

CG

13

4

D1DLC3 Center J/B Instrument Panel J/B

4CP–B

AJ6JC

05–590–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

755Author: Date:

2004 COROLLA (RM1037U)

TC TERMINAL CIRCUIT

CIRCUIT DESCRIPTIONDTC output mode is set by connecting between TC and CG of the DLC3.The DTCs are displayed by blinking the SRS warning light.

WIRING DIAGRAM

HINT:When each warning light stays blinking, ground short in the wiring until the terminal TC of the DLC3 or internalground short in each ECU is suspected.

055ZW–05

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H40065

H40173H43360

TCDLC3:

Airbag Sensor Assy Center:

TC

H40173CG

–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–591

756Author: Date:

2004 COROLLA (RM1037U)

INSPECTION PROCEDURE

1 CHECK WIRE HARNESS(DLC3 – AIRBAG SENSOR ASSY CENTER)

(a) Turn the ignition switch to the LOCK position.(b) Disconnect the aribag sensor assy center connector.(c) Measure the resistance according to the value(s) in the

table below.Standard:

Tester connection Condition Specified condition

TC – TC Always Below 1 Ω

NG REPAIR OR REPLACE WIRE HARNESS(TC ofELC3 – TC of AIRBAG SENSOR ASSY CENTER)

OK

2 CHECK WIRE HARNESS(CG of DLC3 – BODY GROUND)

(a) Measure the resistance according to the value(s) in thetable below.Standard:

Tester connection Condition Specified condition

CG – Body ground Always Below 1 Ω

NG REPAIR OR REPLACE WIRE HARNESS(CG ofDLC3 – BODY GROUND)

OK

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H40065

TC

05–592–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)

757Author: Date:

2004 COROLLA (RM1037U)

3 CHECK WIRE HARNESS(TC of AIRBAG SENSOR ASSY CENTER – BODYGROUND)

(a) Measure the resistance according to the value(s) in thetable below.Standard:

Tester connection Condition Specified condition

TC – Body ground Always 1 MΩ or Higher

NG REPAIR OR REPLACE WIRE HARNESS ANDEACH ECU

OK

REPLACE AIR BAG SENSOR ASSY CENTER