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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)
05–422–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)
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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
05257–12
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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
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2004 COROLLA (RM1037U)
CUSTOMER PROBLEM ANALYSIS CHECK
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.
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
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(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.
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.
–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–427
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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.
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)
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
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2004 COROLLA (RM1037U)
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
–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–431
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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
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.
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
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)
–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–435
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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)
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
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
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
H01003
H10600 H40103 H40031
D Squib AirbagSensorAssyCenter
DLC3
CGTc
DTC B0100/13
SpiralCableSub–Assy
–DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM (April, 2003)05–439
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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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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)
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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