toyota tacoma workshop manual

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TOYOTATACOMA

228TA03

TOYOTA TACOMA OUTLINE OF NEW FEATURES

TOYOTA TACOMA

293

OUTLINE OF NEW FEATURESThe following changes are made for the 2003 modelyear.

1. 2RZ-FE and 3RZ-FE Engine

To comply with the OBD-II (On-Board DiagnosisII) regulations, all the DTC (Diagnostic TroubleCode) have been made to correspond to the SAEcontrolled codes. For details, refer to 2003 Gener-al Features section.

2. 5VZ-FE Engine

The composition of the TWC (Three-Way Cat-alytic Converter) has been changed to complywith the LEV (Low Emission Vehicle) andSFTP (Supplementary Federal Test Procedure)emission regulations.

The same link type ETCS-i (Electronic ThrottleControl System-intelligent) that is used on the03 Toyota Tundra with the 5VZ-FE engine hasbeen adopted on the models other than Sportgrade model.

To comply with the OBD-II (On-Board Diag-nosis II) regulations, all the DTC (DiagnosticTrouble Code) have been made to correspondto the SAE controlled codes. Some of the DTChave been further divided into smaller detec-tion areas than in the past, and new DTC havebeen assigned to them. For details, refer to 2003General Features section.

3. A340E and A340F AutomaticTransmission

The line pressure control using a linear sole-noid valve (SLT), which was adopted on the02 Toyota Tundra with the 2UZ-FE engine,has also been adopted on the 03 Toyota Taco-ma with the 5VZ-FE engine. Accordingly, theshape of the valve body and the logic of theECM have been changed.

The previous mechanical control, which con-sisted of a throttle cable, cam, and throttlevalve, has been changed to an electronic controlsystem that uses a solenoid valve SLT.

The automatic transmission fluid of 3RZ-FEand 5VZ-FE engine model has been changedfrom the D-II type ATF to the T-IV type ATF.

4. Brake

The ABS brake control system, which was op-tional equipment on the 02 model, is now stan-dard equipment on all models.

The brake actuator with skid control ECU hasbeen changed from the one made by Continen-tal Teves on the 02 model to one made by AD-VICS. However, the basic construction and op-eration are the same as the 02 model.

In place of the pendulum type deceleration sen-sor used previously in the ABS brake controlsystem of the 4WD and Prerunner models, asemiconductor type deceleration sensor hasbeen adopted.

The incremental type hydraulic auto adjusterto automatically adjust the clearance betweenthe shoes and drum has been adopted on rearbrake for 4WD and Prerunner models.

TOYOTA TACOMA OUTLINE OF NEW FEATURES

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5. SeatCRS (Child Restrain System) lower anchorage forsecuring child seats is provided behind the seatcushion of the front or rear seat

228TA01

Lower Anchorage

Double Cab Model Rear Seat

: available : not availableFront Seat Rear Seat

Reg-ularCab

Ex-tra

Cab

DoubleCab

Ex-tra

Cab

DoubleCab

LHSide

RHSide

6. Cruise Control System

On the models with the 5VZ-FE engine otherthan Sport grade model, the cruise control hasbeen changed to one that is controlled by theETCS-i. Accordingly, the components of thesystem have been changed as follows:- Cruise control ECU is integrated in the ECM.- Cruise control actuator and control cable has

been discontinued.- Throttle control motor, throttle position sen-

sor and accelerator pedal position sensor havebeen adopted.

The basic construction and operation are thesame as 03 Celica. For details, refer to page76.

TOYOTA TACOMA NEW FEATURES 295

NEW FEATURES5VZ-FE ENGINE

1. General

The composition of the TWC (Three-Way Catalytic Converter) has been changed to comply with theLEV (Low Emission Vehicle) and SFTP (Supplementary Federal Test Procedure) emission regulations. The same link type ETCS-i (Electronic Throttle Control System-intelligent) that is used on the 03 ToyotaTundra with the 5VZ-FE engine has been adopted on the models other than Sport grade model. For

details of ETCS-i control, refer to page 231.

To comply with the OBD-II (On-Board Diagnosis II) regulations, all the DTC (Diagnostic Trouble Code)have been made to correspond to the SAE controlled codes. Some of the DTC have been further dividedinto smaller detection areas than in the past, and new DTC have been assigned to them. For details,

refer to 2003 General Features section.

Engine Specifications

Model 03 Model 02 ModelNo. of Cyls. & Arrangement 6-Cylinder, V Type

Valve Mechanism 24-Valve DOHC,Belt & Gear Drive

Combustion Chamber Pentroof Type Manifolds Cross-Flow Fuel System SFI Ignition System DIS Displacement cm3 (cu. in.) 3378 (206.1) Bore Stroke mm (in.) 93.5 82.0 (3.68 3.23) Compression 9.6 : 1

Max. Output SAE-NET 142 kW @ 4800 rpm(190 HP @ 4800 rpm)

Max. Torque SAE-NET 298 Nm @ 3600 rpm(220 ft lbf @ 3600 rpm)

IntakeOpen 4 BTDC

Valve Tim-Intake

Close 42 ABDC Valve Tim-ing

ExhaustOpen 46 BBDC g

ExhaustClose 4 ATDC

Firing Order 1-2-3-4-5-6 Research Octane Number 91 or more Emission Regulation LEV and SFTP Oil Grade API SL-EC or ILSAC

Engine Service Mass kg (lb) M/T : 189 (416.7)A/T : 179 (394.6)

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2. Major DifferenceItem Outline

Engine Proper The material of the intake and exhaust valve seats has been changed to one thatexcels in heat resistance.

Intake andExhaust System

Adoption of the ETCS-i* Changed composition of TWC

EngineControl System

Provided a linear type accelerator pedal position sensor in the throttle body* Addition of failsafe functions related to ETCS-i*. Correspondence of all DTC (Diagnostic Trouble Code) to SAE-controlled

codesOther Configuration and structure are the same as 02 model

*: except Sport grade model

3. TWC (Three-Way Catalytic Converter)In place of the metallic type front TWC that was used on the 02 model, the 03 model has adopted anultra thin-wall, ceramic type front TWC to improve exhaust gas reduction performance and comply withthe LEV and SFTP emission regulations.

228TA02

Front TWC

Muffler

Rear TWC

TOYOTA TACOMA MAJOR TECHNICAL SPECIFICATIONS

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MAJOR TECHNICAL SPECIFICATIONSU.S.A. and Canada

Body Type Regular Cab (2WD) Extra Cab (2WD)Vehicle Grade , SR5*5

Model Code RZN140L-TRMDKAB RZN140L-TRPDKAB RZN150L-CRMDKAB RZN150L-CRPDKABLength mm (in.) 4540 (178.7), 4685 (184.4)*3 4540 (178.7), 4685 (184.4)*3 5010 (197.2), 5155 (203.0)*3 5010 (197.2), 5155 (203.0)*3

Overall Width mm (in.) 1690 (66.5) 1690 (66.5) 1690 (66.5) 1690 (66.5)OverallHeight mm (in.) 1630 (64.2)*1, 1620 (63.8)*1, *2 1625 (64.0)*1, 1615 (63.6)*1, *2 1615 (63.6)*1, 1605 (63.2)*1, *2 1615 (63.6)*1, 1605 (63.2)*1, *2

Wheel Base mm (in.) 2625 (103.3) 2625 (103.3) 3095 (121.9) 3095 (121.9)

TreadFront mm (in.) 1450 (57.1) 1450 (57.1) 1450 (57.1) 1450 (57.1)

Tread Rear mm (in.) 1455 (57.3) 1455 (57.3) 1455 (57.3) 1455 (57.3)

Effective Head RoomFront mm (in.) 979 (38.5) 979 (38.5) 984 (38.7), 971 (38.2)*4 984 (38.7), 971 (38.2)*4

Effective Head Room Rear mm (in.) 884 (34.8) 884 (34.8)

Effective Leg RoomFront mm (in.) 1059 (41.7) 1059 (41.7) 1088 (42.8) 1088 (42.8)

Effective Leg Room Rear mm (in.) 690 (27.2) 690 (27.2)

Shoulder RoomFront mm (in.) 1369 (53.9) 1369 (53.9) 1371 (54.0) 1371 (54.0)

Shoulder Room Rear mm (in.) 1329 (52.3) 1329 (52.3)Length mm (in.)

Cargo Space Width mm (in.) Cargo SpaceHeight mm (in.)

OverhangFront mm (in.) 820 (32.3) 820 (32.3) 820 (32.3) 820 (32.3)

Overhang Rear mm (in.) 1095 (43.1), 1240 (48.8)*3 1095 (43.1), 1240 (48.8)*3 1095 (43.1), 1240 (48.8)*3 1095 (43.1), 1240 (48.8)*3Min. Running Ground Clearance mm (in.) 215 (8.5), 205 (8.1)*2 215 (8.5), 205 (8.1)*2 215 (8.5), 205 (8.1)*2 215 (8.5), 205 (8.1)*2Angle of Approach degrees 24, 23*2 24, 23*2 24, 23*2 24, 23*2

Angle of Departure degrees 28, 20*3 28, 20*3 26, 19*3 26, 19*3

Front kg (lb) 728 (1605) 737 (1625) 778 (1715) 787 (1735)Curb Mass. Rear kg (lb) 530 (1170) 531 (1170) 572 (1260) 572 (1260)Curb Mass.

Total kg (lb) 1259 (2775) 1268 (2795) 1349 (2975) 1359 (2995)Front kg (lb)

Gross Vehicle Mass. Rear kg (lb) Gross Vehicle Mass.Total kg (lb) 1925 (4250) 1925 (4250) 2040 (4500) 2040 (4500)

Fuel Tank Capacity L (U.S.gal., lmp.gal.) 60.6 (160, 13.3) 60.6 (160, 13.3) 60.6 (160, 13.3) 60.6 (160, 13.3)Luggage Compartment Capacity m3 (cu.ft.) Max. Speed km/h (mph) 165 (103) 165 (103) 165 (103) 165 (103)Max. Cruising Speed km/h (mph)

1st Gear km/h (mph) 48 (30) 64 (40) 48 (30) 64 (40)Max. Permissible 2nd Gear km/h (mph) 89 (55) 122 (76) 89 (55) 122 (76)Max. PermissibleSpeed 3rd Gear km/h (mph) 137 (85) 165 (103) 137 (85) 165 (103)p

4th Gear km/h (mph) 165 (103) 165 (103) Turning Diameter Wall to Wall m (ft.) 11.6 (38.1) 11.6 (38.1) 13.2 (43.3) 13.2 (43.3)Turning Diameter(Outside Front) Curb to Curb m (ft.) 11.2 (36.7) 11.2 (36.7) 12.7 (41.7) 12.7 (41.7)Engine Type 2RZ-FE 2RZ-FE 2RZ-FE 2RZ-FEValve Mechanism 16-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHCBore Stroke mm (in.) 95.0 86.0 (3.74 3.39) 95.0 86.0 (3.74 3.39) 95.0 86.0 (3.74 3.39) 95.0 86.0 (3.74 3.39)Displacement cm3 (cu.in.) 2438 (148.8) 2438 (148.8) 2438 (148.8) 2438 (148.8)Compression Ratio 9.5 : 1 9.5 : 1 9.5 : 1 9.5 : 1Carburetor Type SFI SFI SFI SFIResearch Octane No. RON 91 or more 91 or more 91 or more 91 or moreMax. Output (SAE-NET) kW/rpm (HP@rpm) 106 / 5000 (142@5000) 106 / 5000 (142@5000) 106 / 5000 (142@5000) 106 / 5000 (142@5000)Max. Torque (SAE-NET) Nm/rpm (lb-ft@rpm) 217 / 4000 (160@4000) 217 / 4000 (160@4000) 217 / 4000 (160@4000) 217 / 4000 (160@4000)Battery Capacity (5HR) Voltage & Amp. hr. 1248, 1255*5 1248, 1255*5 1255 1255Alternator Output Watts 960 960 960 960Starter Output kW 1.4 1.4 1.4 1.4Clutch Type Dry, Single, Diaphragm Dry, Single, Diaphragm Transmission Type W59 A44D W59 A44D

In First 3.954 2.826 3.954 2.826In Second 2.141 1.493 2.141 1.493

Transmission Gear In Third 1.384 1.000 1.384 1.000Transmission GearRatio In Fourth 1.000 0.688 1.000 0.688

In Fifth 0.810 0.810 In Reverse 4.091 2.703 4.091 2.703

Transfer Gear Ratio H4/H2 Differential Gear Ratio (Front/Rear) / 3.583 / 3.727 / 3.583 / 3.727Differential Gear Size (Front/Rear) in. / 7.5 / 7.5 / 7.5 / 7.5

Brake TypeFront Ventilated Disc Ventilated Disc Ventilated Disc Ventilated Disc

Brake Type Rear Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumParking Brake Type Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumBrake Booster Type and Size in. Single 10 Single 10 Single 10 Single 10Proportioning Valve Type LSP and BV LSP and BV LSP and BV LSP and BV

Suspension TypeFront Double Wishbone, coil Double Wishbone, coil Double Wishbone, coil Double Wishbone, coil

Suspension Type Rear Rigid Leaf Rigid Leaf Rigid Leaf Rigid Leaf

Stabilizer BarFront STD STD STD STD

Stabilizer Bar Rear Steering Gear Type Rack and Pinion Rack and Pinion Rack and Pinion Rack and PinionSteering Gear Ratio (Overall) 22.3, 20.4*7 22.3, 20.4*7 22.3, 20.4*7 22.3, 20.4*7Power Steering Type Integral Type Integral Type Integral Type Integral Type

*1: Unladen Vehicle *3: With Rear Bumper *5: Option *7: With Power Steering*2: With P235 / 70 R16 Tire *4: With Moon Roof *6: With ABS *8: With P265 / 70 R16 Tire


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U.S.A. and CanadaExtra Cab (2WD) Reqular Cab (4WD) Extra Cab (4WD)

Sport , SR5*5, Limited*5

VZN150L-CRMDKAB RZN161L-TRMDKAB RZN161L-TRPDKAB RZN171L-CRMDKAB RZN171L-CRPDKAB VZN170L-CRMDKAB5155 (203.0) 4685 (184.4) 4685 (184.4) 5155 (203.0) 5155 (203.0) 5155 (203.0)1765 (69.5) 1690 (66.5), 1785 (70.3)*5 1690 (66.5), 1785 (70.3)*5 1690 (66.5), 1785 (70.3)*5 1690 (66.5), 1785 (70.3)*5 1690 (66.5), 1785 (70.3)*5

1590 (62.6)*1 1720 (67.7)*1, 1750 (68.9)*1, *8 1720 (67.7)*1, 1750 (68.9)*1, *8 1715 (67.5)*1, 1745 (68.7)*1, *8 1715 (67.5)*1, 1745 (68.7)*1, *8 1715 (67.5)*1, 1745 (68.7)*1, *83095 (121.9) 2625 (103.3) 2625 (103.3) 3095 (121.9) 3095 (121.9) 3095 (121.9)1450 (57.1) 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*51455 (57.3) 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5

984 (38.7), 971 (38.2)*4 979 (38.5) 979 (38.5) 984 (38.7), 971 (38.2)*4 984 (38.7), 971 (38.2)*4 984 (38.7), 971 (38.2)*4884 (34.8) 884 (34.8) 884 (34.8) 884 (34.8)1088 (42.8) 1059 (41.7) 1059 (41.7) 1088 (42.8) 1088 (42.8) 1088 (42.8)690 (27.2) 690 (27.2) 690 (27.2) 690 (27.2)1371 (54.0) 1369 (53.9) 1369 (53.9) 1371 (54.0) 1371 (54.0) 1371 (54.0)1329 (52.3) 1329 (52.3) 1329 (52.3) 1329 (52.3)

820 (32.3) 820 (32.3) 820 (32.3) 820 (32.3) 820 (32.3) 820 (32.3)1240 (48.8) 1240 (48.8) 1240 (48.8) 1240 (48.8) 1240 (48.8) 1240 (48.8)

195 (7.7) 280 (11.0), 305 (12.0)*8 280 (11.0), 305 (12.0)*8 275 (10.8), 305 (12.0)*8 275 (10.8), 305 (12.0)*8 275 (10.8), 305 (12.0)*823 32, 35*8 32, 35*8 32, 35*8 32, 35*8 32, 35*8

19 24, 26*8 24, 26*8 24, 26*8 24, 26*8 24, 26*8

814 (1795) 885 (1950) 898 (1980) 932 (2055) 946 (2085) 957 (2110)615 (1355) 624 (1375) 624 (1375) 658 (1450) 658 (1450) 653 (1440)

1429 (3150) 1508 (3325) 1522 (3355) 1590 (3505) 1603 (3535) 1610 (3550)

2040 (4500) 2315 (5100) 2315 (5100) 2315 (5100) 2315 (5100) 2315 (5100)60.6 (160, 13.3) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4)

180 (112) 165 (103) 165 (103) 165 (103) 165 (103) 165 (103)

54 (34) 46 (29) 62 (39) 46 (29) 62 (39) 47 (29)101 (63) 85 (53) 113 (70) 85 (53) 113 (70) 88 (55)146 (91) 132 (82) 165 (103) 132 (82) 165 (103) 127 (79)180 (112) 165 (103) 165 (103) 165 (103)

13.2 (43.3) 11.2 (36.7) 11.2 (36.7) 12.9 (42.3) 12.9 (42.3) 12.9 (42.3)12.7 (41.7) 10.5 (34.4) 10.5 (34.4) 12.2 (40.0) 12.2 (40.0) 12.2 (40.0)

5VZ-FE 3RZ-FE 3RZ-FE 3RZ-FE 3RZ-FE 5VZ-FE24-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHC 24-Valve, DOHC

93.5 82.0 (3.68 3.23) 95.0 95.0 (3.74 3.74) 95.0 95.0 (3.74 3.74) 95.0 95.0 (3.74 3.74) 95.0 95.0 (3.74 3.74) 93.5 82.0 (3.68 3.23)3378 (206.1) 2694 (164.3) 2694 (164.3) 2694 (164.3) 2694 (164.3) 3378 (206.1)

9.6 : 1 9.5 : 1 9.5 : 1 9.5 : 1 9.5 : 1 9.6 : 1SFI SFI SFI SFI SFI SFI

91 or more 91 or more 91 or more 91 or more 91 or more 91 or more142 / 4800 (190@4800) 112 / 4800 (150@4800) 112 / 4800 (150@4800) 112 / 4800 (150@4800) 112 / 4800 (150@4800) 142 / 4800 (190@4800)298 / 3600 (220@3600) 240 / 4000 (177@4000) 240 / 4000 (177@4000) 240 / 4000 (177@4000) 240 / 4000 (177@4000) 298 / 3600 (220@3600)

1255 1255 1255 1255 1255 1255960 960 960 960 960 9601.4 1.4, 2.0*5 1.4, 2.0*5 1.4, 2.0*5 1.4, 2.0*5 1.4

Dry, Single Plate, Diaphragm Dry, Single Plate, Diaphragm Dry, Single Plate, Diaphragm Dry, Single Plate, Diaphragm

R150 W59 A340F W59 A340F R150F3.830 3.954 2.804 3.954 2.804 3.8302.062 2.141 1.531 2.141 1.531 2.0621.436 1.384 1.000 1.384 1.000 1.4361.000 1.000 0.705 1.000 0.705 1.0000.838 0.810 0.810 0.8384.220 4.091 2.393 4.091 2.393 4.220

1000 / 2.566 1000 / 2.566 1000 / 2.566 1000 / 2.566 1000 / 2.566 / 3.153 3.909 / 3.909, 4.300 / 4.300*8 4.100 / 4.100, 4.555 / 4.555*8 3.909 / 3.909, 4.300 / 4.300*8 4.100 / 4.100, 4.555 / 4.555*8 3.909 / 3.909, 4.100 / 4.100*8

/ 8 7.5 / 8 7.5 / 8 7.5 / 8 7.5 / 8 7.5 / 8Ventilated Disc Ventilated Disc Ventilated Disc Ventilated Disc Ventilated Disc Ventilated Disc

Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumLeading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum

Single 10 Single 10 Single 10 Single 10 Single 10 Single 10LSP and BV LSP and BV LSP and BV LSP and BV LSP and BV LSP and BV

Double Wishbone, coil Double Wishbone, coil Double Wishbone, coil Double Wishbone, coil Double Wishbone, coil Double Wishbone, coilRigid Leaf Rigid Leaf Rigid Leaf Rigid Leaf Rigid Leaf Rigid Leaf

STD STD STD STD STD STD

Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion Rack and Pinion20.4 19.4 19.4 19.4 19.4 19.4

Integral Type Integral Type Integral Type Integral Type Integral Type Integral Type


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U.S.A. and CanadaBody Type Extra Cab (4WD) Double Cab (4WD) Regular Cab (Pre Runner) Extra Cab (Pre Runner)

Vehicle Grade , SR5*5, Limited*5 , SR5*5

Model Code VZN170L-CRPDKAB VZN170L-PRPDKAB RZN191L-TRPDKAB RZN196L-CRPDKABLength mm (in.) 5155 (203.0) 5155 (203.0) 4685 (184.4) 5155 (203.0)

Overall Width mm (in.) 1690 (66.5), 1785 (70.3)*5 1785 (70.3) 1690 (66.5), 1785 (70.3)*5 1690 (66.5), 1785 (70.3)*5OverallHeight mm (in.) 1715 (67.5)*1, 1745 (68.7)*1, *8 1715 (67.5)*1, 1745 (68.7)*1, *8, *9 1720 (67.7)*1, 1750 (68.9)*1, *8 1715 (67.5)*1, 1745 (68.7)*1, *8

Wheel Base mm (in.) 3095 (121.9) 3095 (121.9) 2625 (103.3) 3095 (121.9)

TreadFront mm (in.) 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5

Tread Rear mm (in.) 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5

Effective Head RoomFront mm (in.) 984 (38.7), 971 (38.2)*4 988 (38.9), 981 (38.6)*1 979 (38.5) 984 (38.7), 971 (38.2)*4

Effective Head Room Rear mm (in.) 884 (34.8) 961 (37.8) 884 (34.8)

Effective Leg RoomFront mm (in.) 1088 (42.8) 1088 (42.8) 1059 (41.7) 1088 (42.8)

Effective Leg Room Rear mm (in.) 690 (27.2) 858 (33.8) 690 (27.2)

Shoulder RoomFront mm (in.) 1371 (54.0) 1371 (54.0) 1369 (53.9) 1371 (54.0)

Shoulder Room Rear mm (in.) 1329 (52.3) 1360 (53.5) 1329 (52.3)Length mm (in.)

Cargo Space Width mm (in.) Cargo SpaceHeight mm (in.)

OverhangFront mm (in.) 820 (32.3) 820 (32.3) 820 (32.3) 820 (32.3)

Overhang Rear mm (in.) 1240 (48.8) 1240 (48.8) 1240 (48.8) 1240 (48.8)Min. Running Ground Clearance mm (in.) 275 (10.8), 305 (12.0)*8 255 (10.0), 285 (11.2) 280 (11.0), 305 (12.0)*8 275 (10.8), 305 (12.0)*8Angle of Approach degrees 32, 35*8 30, 33*8 32, 35*8 32, 35*8

Angle of Departure degrees 24, 26*8 23, 25*8 24, 26*8 24, 26*8

Front kg (lb) 968 (2135) 996 (2195) 807 (1780) 853 (1880)Curb Mass. Rear kg (lb) 653 (1440) 701 (1545) 612 (1350) 646 (1425)Curb Mass.

Total kg (lb) 1622 (3575) 1696 (3740) 1420 (3130) 1499 (3505)Front kg (lb)

Gross Vehicle Mass. Rear kg (lb) Gross Vehicle Mass.Total kg (lb) 2315 (5100) 2315 (5100) 2315 (5100) 2315 (5100)

Fuel Tank Capacity L (U.S.gal., lmp.gal.) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4)Luggage Compartment Capacity m3 (cu.ft.) Max. Speed km/h (mph) 165 (103) 165 (103) 165 (103) 165 (103)Max. Cruising Speed km/h (mph)

1st Gear km/h (mph) 65 (40) 65 (40) 65 (40) 62 (39)Max. Permissible 2nd Gear km/h (mph) 119 (74) 119 (74) 119 (74) 113 (70)Max. PermissibleSpeed 3rd Gear km/h (mph) 165 (103) 165 (103) 165 (103) 165 (103)p

4th Gear km/h (mph) Turning Diameter Wall to Wall m (ft.) 12.9 (42.3) 12.9 (42.3) 11.2 (36.7) 12.9 (42.3)Turning Diameter(Outside Front) Curb to Curb m (ft.) 12.2 (40.0) 12.2 (40.0) 10.5 (34.4) 12.2 (40.0)Engine Type 5VZ-FE 5VZ-FE 3RZ-FE 3RZ-FEValve Mechanism 24-Valve, DOHC 24-Valve, DOHC 16-Valve, DOHC 16-Valve, DOHCBore Stroke mm (in.) 93.5 82.0 (3.68 3.23) 93.5 82.0 (3.68 3.23) 95.0 95.0 (3.74 3.74) 95.0 95.0 (3.74 3.74)Displacement cm3 (cu.in.) 3378 (206.1) 3378 (206.1) 2694 (164.3) 2694 (164.3)Compression Ratio 9.6 : 1 9.6 : 1 9.5 : 1 9.5 : 1Carburetor Type SFI SFI SFI SFIResearch Octane No. RON 91 or more 91 or more 91 or more 91 or moreMax. Output (SAE-NET) kW/rpm (HP@rpm) 142 / 4800 (190@4800) 142 / 4800 (190@4800) 112 / 4800 (150@4800) 112 / 4800 (190@4800)Max. Torque (SAE-NET) Nm/rpm (lb-ft@rpm) 298 / 3600 (220@3600) 298 / 3600 (220@3600) 240 / 4000 (177@4000) 240 / 4000 (177@4000)Battery Capacity (5HR) Voltage & Amp. hr. 1255 1255 1255 1255Alternator Output Watts 960 960 960 960Starter Output kW 1.4, 1.8*5 1.4, 1.8*5 1.4, 2.0*5 1.4, 2.0*5

Clutch Type Transmission Type A340F A340F A340E A340E

In First 2.804 2.804 2.804 2.804In Second 1.531 1.531 1.531 1.531

Transmission Gear In Third 1.000 1.000 1.000 1.000Transmission GearRatio In Fourth 0.705 0.705 0.705 0.705

In Fifth In Reverse 2.393 2.393 2.393 2.393

Transfer Gear Ratio H4/H2 1.000 / 2.566 1.000 / 2.566 Differential Gear Ratio (Front/Rear) 3.909 / 3.909, 4.100 / 4.100*8 3.909 / 3.909, 4.100 / 4.100*8 / 3.909, 4.300*8 / 4.100, 4.555*8Differential Gear Size (Front/Rear) in. 7.5 / 8 7.5 / 8 / 8 / 8

Brake TypeFront Ventilated Disc Ventilated Disc Ventilated Disc Ventilated Disc

Brake Type Rear Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumParking Brake Type Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumBrake Booster Type and Size in. Single 10 Single 10 Single 10 Single 10Proportioning Valve Type LSP and BV LSP and BV LSP and BV LSP and BV

Suspension TypeFront Double Wishbone, Coil Double Wishbone, Coil Double Wishbone, Coil Double Wishbone, Coil

Suspension Type Rear Rigid Leaf Rigid Leaf Rigid Leaf Rigid Leaf

Stabilizer BarFront STD STD STD STD

Stabilizer Bar Rear Steering Gear Type Rack and Pinion Rack and Pinion Rack and Pinion Rack and PinionSteering Gear Ratio (Overall) 19.4 19.4 19.4 19.4Power Steering Type Integral Type Integral Type Integral Type Integral Type

*1: Unladen Vehicle *3: With Rear Bumper *5: Option *7: With Power Steering *9: With Roof-Rack: +65 mm (2.6 in.)*2: With P235 / 70 R16 Tire *4: With Moon Roof *6: With ABS *8: With P265 / 70 R16 Tire


12

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

300

U.S.A. and CanadaDouble Cab (Pre Runner) Extra Cab (Pre Runner) Double Cab (Pre Runner)

, SR5*5

RZN196L-PRPDKAB VZN195L-CRPDKAB VZN195L-PRPDKAB5155 (203.0) 5155 (203.0) 5155 (203.0)1785 (70.3) 1690 (66.5), 1785 (70.3)*5 1785 (70.3)

1715 (67.5)*1, *9, 1745 (68.7)*1, *8, *9 1720 (67.7)*1, 1750 (68.9)*1, *8 1715 (67.5)*1,*9, 1745 (68.7)*1,*8,*93095 (121.9) 3095 (121.9) 3095 (121.9)

1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*5 1460 (57.5), 1500 (59.1)*51455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5 1455 (57.3), 1495 (58.9)*5

998 (38.9), 981 (38.6)*4 984 (38.7), 971 (38.2)*4 988 (38.9), 981 (38.6)*4961 (37.8) 884 (34.8) 961 (37.8)1088 (42.8) 1088 (42.8) 1088 (42.8)858 (33.8) 690 (27.2) 858 (33.8)1371 (54.0) 1371 (54.0) 1371 (54.0)1360 (53.5) 1329 (52.3) 1360 (53.5)

820 (32.3) 820 (32.3) 820 (32.3)1240 (48.8) 1240 (48.8) 1240 (48.8)

255 (10.0), 285 (11.2)*8 275 (10.8), 305 (12.0)*8 255 (10.0), 285 (11.2)*830, 33*8 32, 35*8 30, 33*8

23, 25*8 24, 26*8 23, 25*8

878 (1935) 878 (1935) 902 (1990)694 (1530) 642 (1415) 689 (1520)

1572 (3465) 1520 (3350) 1592 (3510)

2315 (5100) 2315 (5100) 2315 (5100)70.0 (18.5, 15.4) 70.0 (18.5, 15.4) 70.0 (18.5, 15.4)

165 (103) 165 (103) 165 (103)

62 (39) 65 (40) 65 (40)113 (70) 119 (74) 119 (74)

165 (103) 165 (103) 165 (103)

12.9 (42.3) 12.9 (42.3) 12.9 (42.3)12.2 (40.0) 12.2 (40.0) 12.2 (40.0)

3RZ-FE 5VZ-FE 5VZ-FE16-Valve, DOHC 24-Valve, DOHC 24-Valve, DOHC

95.0 95.0 (3.74 3.74) 93.5 82.0 (3.68 3.23) 93.5 82.0 (3.68 3.23)2694 (164.3) 3378 (206.1) 3378 (206.1)

9.5 : 1 9.6 : 1 9.6 : 1SFI SFI SFI

91 or more 91 or more 91 or more112 / 4800 (150@4800) 142 / 4800 (190@4800) 142 / 4800 (190@4800)240 / 4000 (177@4000) 298 / 3600 (220@3600) 298 / 3600 (220@3600)

1255 1255 1255960 960 960

1.4, 2.0*5 1.4, 1.8*5 1.4, 1.8*5

A340E A340E A340E2.804 2.804 2.8041.531 1.531 1.5311.000 1.000 1.0000.705 0.705 0.705

2.393 2.393 2.393

/ 4.100, 4.555*8 / 3.900, 4.100*2 / 3.900, 4.100*2

/ 8 / 8 / 8Ventilated Disc Ventilated Disc Ventilated Disc

Leading-Trailing Drum Leading-Trailing Drum Leading-Trailing DrumLeading-Trailing Drum Leading-Trailing Drum Leading-Trailing Drum

Single 10 Single 10 Single 10LSP and BV LSP and BV LSP and BV

Double Wishbone, Coil Double Wishbone, Coil Double Wishbone, CoilRigid Leaf Rigid Leaf Rigid Leaf

STD STD STD

Rack and Pinion Rack and Pinion Rack and Pinion19.4 19.4 19.4

Integral Type Integral Type Integral Type

NOTICEWhen handling supplemental restraint system components (removal,installation or inspection, etc.), always follow the direction given in the repairmanuals listed above to prevent accidents and supplemental restraintsystem malfunction.

FOREWORDThis wiring diagram manual has been prepared to provideinformation on the electrical system of the 2003 TOYOTATACOMA.

Applicable models: VZN150,170,195 SeriesRZN140,150,161,RZN171,191,196 Series

For service specifications and repair procedures of the abovemodels other than those listed in this manual, refer to thefollowing manuals;

Manual Name Pub. No. 2003 TOYOTA TACOMA

Repair Manual Volume 1Volume 2

2003 TOYOTA New Car Features

RM1002U1RM1002U2NCF228U

All information in this manual is based on the latest productinformation at the time of publication. However, specificationsand procedures are subject to change without notice.

2002All rights reserved. This book may not bereproduced or copied, in whole or in part, withoutthe written permission of Toyota MotorCorporation.

2003 TOYOTA TACOMA (EWD517U)1

2003 TOYOTA TACOMAELECTRICAL WIRING DIAGRAM

Section Code Page

INTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . 3

TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . 12

ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . 18

RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . . 30

SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . 53

GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

POWER SOURCE (Current Flow Chart) J. . . . . . . . . 230CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

PART NUMBER OF CONNECTORS L. . . . . . . . . . . . . 244

OVERALL ELECTRICAL WIRING DIAGRAM M. . . . . 248


A INTRODUCTIONThis manual consists of the following 13 sections:

No. Section Description

AINDEX Index of the contents of this manual.

AINTRODUCTION Brief explanation of each section.

B HOW TO USE THISMANUAL Instructions on how to use this manual.

C TROUBLESHOOTING Describes the basic inspection procedures for electrical circuits.

D ABBREVIATIONS Defines the abbreviations used in this manual.

EGLOSSARY OFTERMS ANDSYMBOLS

Defines the symbols and functions of major parts.

F RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the system circuit.

G ELECTRICALWIRING ROUTINGDescribes position of Parts Connectors, Splice points, Ground points, etc.This section is closely related to the system circuit.

INDEX Index of the system circuits.

HSYSTEM CIRCUITS

Electrical circuits of each system are shown from the power supply through groundpoints. Wiring connections and their positions are shown and classified by codeaccording to the connection method. (Refer to the section, How to use this manual).The System Outline and Service Hints useful for troubleshooting are also containedin this section.

I GROUND POINT Shows ground positions of all parts described in this manual.

J POWER SOURCE(Current Flow Chart) Describes power distribution from the power supply to various electrical loads.

K CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book.This section is closely related to the system circuit.

L PART NUMBER OFCONNECTORS Indicates the part number of the connectors used in this manual.

MOVERALLELECTRICALWIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

2003 TOYOTA TACOMA (EWD517U)

M


HOW TO USE THIS MANUAL B

This manual provides information on the electrical circuits installed on vehicles bydividing them into a circuit for each system.

The actual wiring of each system circuit is shown from the point where the powersource is received from the battery as far as each ground point. (All circuitdiagrams are shown with the switches in the OFF position.)

When troubleshooting any problem, first understand the operation of the circuitwhere the problem was detected (see System Circuit section), the power sourcesupplying power to that circuit (see Power Source section), and the ground points(see Ground Point section). See the System Outline to understand the circuitoperation.

When the circuit operation is understood, begin troubleshooting of the problemcircuit to isolate the cause. Use Relay Location and Electrical Wiring Routingsections to find each part, junction block and wiring harness connectors, wiringharness and wiring harness connectors, splice points, and ground points of eachsystem circuit. Internal wiring for each junction block is also provided for betterunderstanding of connection within a junction block.Wiring related to each system is indicated in each system circuit by arrows(from__, to__). When overall connections are required, see the Overall ElectricalWiring Diagram at the end of this manual.

@@@@

@@@@

@@@@

@@@@

@@@@

@@@@

@@@@

WR

7. 5AGAUGE

1

2

3

4

487

2 1 11

13

4

1

2

3

4

1

2

B18

BL

FROM POWER SOURCE SYSTEM (SEE PAGE 66)

RL

RL

G

WB

WBWB

WB

WB

WB

YG

R

L 4

H17

R 6

DELAYCIRCUIT

S 6

B18

3

4

R 7

BV11

GW

GR

GR

GR

GR

GW

GW

(W/G

)

(S/D

)(S

/D)

C 7

(SHIELDED)

BV11

I 5

LL

STOP LIGHT

15

7

TO ABS ECU

BO

50

15ASTOP

IB

IB

REAR LIGHTSWARNING LIGHT[COMB. METER]

3C

3C

IE114STOP LIGHT SW

STO

P LI

GH

T RH

[REA

R CO

MB.

LIG

HT R

H]

STO

P LI

GH

T RH

[REA

R CO

MB.

LIG

HT L

H]

HIGH MOUNTEDSTOP LIGHT

[A]

[B]

[I]

[D]

[F]

[H]

[E]

[J]

[M][N]

[K]

[L]

[G][C]

LIGHT FAILURE SENSOR


B HOW TO USE THIS MANUAL* The system shown here is an EXAMPLE ONLY. It is different to the actual

circuit shown in the SYSTEM CIRCUITS SECTION.


B[A] : System Title[B] : Indicates a Relay Block. No shading is used and

only the Relay Block No. is shown to distinguish itfrom the J/BExample: Indicates Relay Block No.1

[C] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, enginetype, or specification is different.

[D] : Indicates related system.[E] : Indicates the wiring harness and wiring harness

connector. The wiring harness with male terminal isshown with arrows ( ).Outside numerals are pin numbers.

Female Male ( )The first letter of the code for each wiring harnessand wiring harness connector(s) indicates thecomponents location, e.g, E for the EngineCompartment, I for the Instrument Panel andSurrounding area, and B for the Body andSurrounding area.When more than one code has the first and secondletters in common, followed by numbers (e.g, IH1,IH2), this indicates the same type of wiring harnessand wiring harness connector.

[F] : Represents a part (all parts are shown in sky blue).The code is the same as the code used in partsposition.

[G] : Junction Block (The number in the circle is the J/BNo. and the connector code is shown beside it).Junction Blocks are shaded to clearly separatethem from other parts.

3C indicatesthat it is insideJunction BlockNo.3

Example:

[H] : When 2 parts both use one connector in common,the parts connector name used in the wire routingsection is shown in square brackets [ ].

[I] : Indicates the wiring color.Wire colors are indicated by an alphabetical code.B = Black W = White BR = BrownL = Blue V = Violet SB = Sky BlueR = Red G = Green LG = Light GreenP = Pink Y = Yellow GR = GrayO = OrangeThe first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.

Example: L Y

L(Blue)

Y(Yellow)

[J] : Indicates a wiring Splice Point (Codes are E for theEngine Room, I for the Instrument Panel, and Bfor the Body).

The Location of splice Point I 5 is indicated by theshaded section.

[K] : Indicates a shielded cable.

[L] : Indicates the pin number of the connector.The numbering system is different for female andmale connectors.

Example: Numbered in orderfrom upper left tolower right

Numbered in orderfrom upper right tolower left

Female Male[M] : Indicates a ground point.

The first letter of the code for each ground point(s)indicates the components location, e.g, E for theEngine Compartment, I for the Instrument Paneland Surrounding area, and B for the Body andSurrounding area.

[N] : Page No.

[O]

[P]

[Q]

[R]

[S]

[T]

[U]

[V]


B HOW TO USE THIS MANUAL

Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flowsthrough the rear lights warning light to TERMINAL 4 of the light failure sensor.STOP LIGHT DISCONNECTION WARNINGWhen the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the currentflowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects thedisconnection and the warning circuit of the light failure sensor is activated.As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lightswarning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warningcircuit on and holds the warning light on until the ignition SW is turned off.

S6 STOP LIGHT SW21 : Closed with the brake pedal depressed

L4 LIGHT FAILURE SENSOR1, 2, 7GROUND : Approx. 12 volts with the stop light SW on

4, 8GROUND : Approx. 12 volts with the ignition SW at ON position11GROUND : Always continuity

: PARTS LOCATION

Code See Page Code See Page Code See PageC7 34 L4 36 R7 37H17 36 R6 37 S6 35

: RELAY BLOCKS

Code See Page Relay Blocks (Relay Block Location)1 18 R/B No.1 (Instrument Panel Left)

@@@

@@@

@@@

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

Code See Page Junction Block and Wire Harness (Connector Location)IB 20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)3C 22 Instrument Panel Wire and J/B No.3 (Instrument Panel Left Side)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

Code See Page Joining Wire Harness and Wire Harness (Connector Location)IE1 42 Floor Wire and Instrument Panel Wire (Left Kick Panel)BV1 50 Luggage Room Wire and Floor Wire (Luggage Compartment Left)

: GROUND POINTS

Code See Page Ground Points LocationBL 50 Under the Left Quarter PillarBO 50 Back Panel Center

: SPLICE POINTS

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice PointsI5 44 Cowl Wire B18 50 Luggage Room Wire

SYSTEM OUTLINE

SERVICE HINTS


B

[O] : Explains the system outline.

[P] : Indicates values or explains the function for reference during troubleshooting.

[Q] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.Example : Part L4 (Light Failure Sensor) is on page 36 of the manual.

* The letter in the code is from the first letter of the part, and the number indicates its order in partsstarting with that letter.

Example : L 4

Parts is 4th in orderLight Failure Sensor

[R] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.Example : Connector 1 is described on page 18 of this manual and is installed on the left side of the instrument

panel.

[S] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.Example : Connector 3C connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this

manual, and is installed on the instrument panel left side.

[T] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiringharness is shown first, followed by the male wiring harness).Example : Connector IE1 connects the floor wire (female) and Instrument panel wire (male). It is described on

page 42 of this manual, and is installed on the left side kick panel.

[U] : Indicates the reference page showing the position of the ground points on the vehicle.Example : Ground point BO is described on page 50 of this manual and is installed on the back panel center.

[V] : Indicates the reference page showing the position of the splice points on the vehicle.Example : Splice point I5 is on the Cowl Wire Harness and is described on page 44 of this manual.


B HOW TO USE THIS MANUALThe ground points circuit diagram shows the connections from all major parts to the respective ground points. Whentroubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identifythe problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also bechecked this way.

I GROUND POINTFAN MAIN RELAY

FAN MAIN RELAY

A/C FAN RELAY NO.2

A/C FAN RELAY NO.3

RADIATOR FAN MOTOR

RETRACT CONTROLRELAY

RETRACT MOTOR RH

RETRACT MOTOR LH

FRONT TURN SIGNAL LIGHT RH

PARKING LIGHT RH

FRONT TURN SIGNALLIGHT LH

PARKING LIGHT LH

DOOR LOCK CONTROLSW RH

DOOR KEY LOCKSW RH

DOOR LOCK MOTORRH

BLOWER RESISTOR

A/C AMPLIFIER

RADIO AND PLAYER

HEATER RELAY

AUTO ANTENNAMOTOR

BLOWER SW

PARKING BRAKE SW

COMBINATION METER

HORN SW [COMB. SW]

TURN SIGNAL FLASHER

DOOR KEY LOCK SW LH

DOOR LOCK MOTOR LH

FUEL CONTROL SW

WOOFER AMPLIFIER

COMBINATION METER

COMBINATION METER

FUEL SENDER

CIGARETTE LIGHTER

O/D MAIN SW

CLOCK

5

5

5

5

4

4

4

4

4BA15

IB18

EA210

3E5

3E6

3G13

3F3

3D1

3B7

ID115

IC33

IA12

E 3

A

AA

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB WB WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB WB

WB

BR

WB

BR BR

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

WB

BR

WB

BRBR

BR

WB

WB

WB

WB

WB

BR

WB (4AGZE)

WB

A

A

A

I 6

I 6

I 2

I 2

I 2

B 5I 5

I 5

I 5

B 5

B 5

B 5

I 5

I 5

I 3I 3

E 3

E 3

E 3

E 2

E 4

E 5

E 4

E 5

E 6E 4

E 4

B 4

EA

I 4

B 4

B 4

I 4 I 8

IB IC

3C7

4

JUNCTIONCONNECTOR

J 1

4

DOOR LOCK CONTROLRELAY

ELECTRICAL IDLE-UPCUT RELAY (M/T)

FRONT SIDE MARKERLIGHT RH

FRONT SIDE MARKERLIGHT LH

BRAKE FLUID LEVELWARNING SW

UNLOCK WARNINGSW

WIPER AND WASHERSW [COMB. SW]

LIGHT CONTROL SW[COMB. SW]

HEATER CONTROLASSEMBLY

HEATER SERVOMOTOR AMPLIFIER

DIMMER SW[COMB. SW]

CRUISE CONTROLMIRROR SW

REAR WINDOWDEFOGGER SW

POWER WINDOWMASTER SW

POWER WINDOWCONTROL RELAY

DOOR LOCK CONTROL SW

REMOTE CONTROLMIRROR SW

* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.


BThe Current Flow Chart section, describes which parts each power source (fuses, fusible links, and circuit breakers)transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each systemare explained. Since all System Circuit diagrams start from the power source, the power source system must be fullyunderstood.

Theft Deterrent and Door Lock Control

J POWER SOURCE (Current Flow Chart)

11

1

EA11EA23

7

EB16

E 6

E 7 I 2 I 2

I 2

E 7

E 7

E 7

2

1

1

2

2

2

2

2

B

B

WW

BB

BB

B

WB

B

B

B

BO

BW

WB

BW

STARTER RELAY

INJECTION RELAY

15A HAZRADIO

7.5A AM2

50A MAIN

1.25B FL MAIN

BATTERY

W W W

W

W

W

R

WL

WW

GW

G

15A TAIL

20A DEFOG

15A RAD CIG

TAILRELAY

7.5A DOME

40A DOOR LOCK CB

21

12

48

23

34

G

WR

PL

BY

BY

WR

AM2

IG2

ACC

IG1

AM1

W

W

WR

W

W

WB

2 1

1

1

1

1

2

2

2

2

3

4

3

4

1

2

1

2

2

1

11

1

IGNITION SWI 8

Battery 30A AM2 2

Starter S 220A RADIO NO.1

10A HORN

15A EFI

7.5A DOMEShort Pin

10A HAZARD

The chart below shows the route by which current flows from the battery to each electrical source(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.

Engine Room R/B (See Page 20)

ABSABS and Traction ControlCruise ControlElectronically Controlled Transmission and A/T IndicatorMultiplex Communication SystemCigarette Lighter and Clock

Key Reminder and Seat Belt Warning

STOP

Fuse Page194

214

112

System

DOME

20A

10A

Combination MeterHeadlightInterior Light

2

2

6100A ALT

EB1

POWER SOURCELight Auto Turn Off

187180166210

230

122

10A ECUB

560A ABS

2

6Fusible Link Block

2

* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

BLACK

[D]

K CONNECTOR LIST

J4 K1 K2 L1

L2 L3 L4 M1 M2 M3

M4 N1 N2 O1 O2

DARK GRAY

GRAY

DARK GRAYBLACKGRAYGRAY

A B BA A B C C C

D DD D

AA

AA

AAA A 1 1 2 1 2

1 12 1

2

1 2 36 7 8 9 101112

4 57

1 23 45 6 8

4321

1 2 3 2 3 48 9 105 6

17 1 2 1

1

[A]

[C]

[B]J3

1 2 1 2

6 7 81 2

AA

AAA A

A B BA A B C C C

D DD D

I14 I15 I16 J1 J2DARK GRAY GRAY BLACK


B HOW TO USE THIS MANUAL

[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)[B] : Junction Connector

Indicates a connector which is connected to a short terminal.Junction Connector

Short TerminalSame Color

Junction connector in this manual include a short terminal which isconnected to a number of wire harnesses. Always performinspection with the short terminal installed. (When installing thewire harnesses, the harnesses can be connected to any positionwithin the short terminal grouping. Accordingly, in other vehicles,the same position in the short terminal may be connected to a wireharness from a different part.)Wire harness sharing the same short terminal grouping have thesame color.

[C] : Parts CodeThe first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts whichstart with the same letter.

[D] : Connector ColorConnectors not indicated are milky white in color.


B

[A] : Part Code[B] : Part Name[C] : Part Number

Toyota Part Number are indicated.

Not all of the above part numbers of the connector are established for the supply. In case of ordering a connectoror terminal with wire, please confirm in advance if there is supply for it using Parts Catalog News (published byParts Engineering Administration Dept.).

A 5

9098011194

L PART NUMBER OF CONNECTORSCode Part Name Part Number Code Part Name Part NumberA 1

A 2

A 4

A 6

A 7

A/C Ambient Temp. Sensor

A/C Condenser Fan Motor

A/C Triple Pressure SW (A/C Dual andSingle Pressure SW)

A/T Oil Temp. Sensor

ABS Actuator

ABS Actuator

9098011070

9098011237

9098010943

9098011413

9098011151

D 4

D 5

D 6

D 7

D 8

D 9

D10

D11

Diode (Door Courtesy Light)Diode (Key Off Operation)Diode (Luggage Compartment Light)Door Lock Control Relay

Door Courtesy Light LH

Door Courtesy Light RH

Door Courtesy SW LH

Door Courtesy SW RH

9098011608

9098010962

9098011608

9098010848

9098011148

9098011097

A 8 ABS Speed Sensor Front LH 9098010941

A 9 ABS Speed Sensor Front RH

9098011856A10 Airbag Sensor Front LH

A11 Airbag Sensor Front RH

D12 Door Courtesy SW Front LH

9098011156D13 Door Courtesy SW Front RH

D14 Door Courtesy SW Rear LH

Door Courtesy SW Rear RHD15

[B]

[C]

A12 Auto Antenna Motor 9098011194

A 3 A/C Condenser Fan Relay 9098010940

[A]

9098011009

9098011002

D16

D17

Door Key Lock and Unlock SW LH

Door Key Lock and Unlock SW RH9098011170

To Ignition SWIG Terminal

Fuse

VoltmeterSW 1

Relay

SW 2 Solenoid

[A]

[B]

[C]

Ohmmeter

SW

Ohmmeter

Diode

Digital Type Analog Type


C TROUBLESHOOTINGVOLTAGE CHECK

(a) Establish conditions in which voltage is present at the checkpoint.Example:

[A] Ignition SW on[B] Ignition SW and SW 1 on[C] Ignition SW, SW 1 and Relay on (SW 2 off)

(b) Using a voltmeter, connect the negative lead to a good groundpoint or negative battery terminal, and the positive lead to theconnector or component terminal.This check can be done with a test light instead of a voltmeter.

CONTINUITY AND RESISTANCE CHECK(a) Disconnect the battery terminal or wire so there is no voltage

between the check points.(b) Contact the two leads of an ohmmeter to each of the check

points.

If the circuit has diodes, reverse the two leads and checkagain.When contacting the negative lead to the diode positive sideand the positive lead to the negative side, there should becontinuity.When contacting the two leads in reverse, there should be nocontinuity.

(c) Use a volt/ohmmeter with high impedance (10 k W /Vminimum) for troubleshooting of the electrical circuit.

To Ignition SWIG Terminal

Test Light

RelayLight

SW 2 Solenoid

Disconnect

Short [A]

DisconnectDisconnect

SW 1

Fuse Case

Short [B]

Short [C]

Pull Up

Press Down Press Down

Pull Up


CFINDING A SHORT CIRCUIT

(a) Remove the blown fuse and disconnect all loads of the fuse.(b) Connect a test light in place of the fuse.(c) Establish conditions in which the test light comes on.

Example:[A] Ignition SW on[B] Ignition SW and SW 1 on[C] Ignition SW, SW 1 and Relay on (Connect the

Relay) and SW 2 off (or Disconnect SW 2)(d) Disconnect and reconnect the connectors while watching the

test light.The short lies between the connector where the test lightstays lit and the connector where the light goes out.

(e) Find the exact location of the short by lightly shaking theproblem wire along the body.

CAUTION:(a) Do not open the cover or the case of the ECU unless

absolutely necessary. (If the IC terminals are touched,the IC may be destroyed by static electricity.)

(b) When replacing the internal mechanism (ECU part) ofthe digital meter, be careful that no part of your body orclothing comes in contact with the terminals of leadsfrom the IC, etc. of the replacement part (spare part).

DISCONNECTION OF MALE AND FEMALECONNECTORS

To pull apart the connectors, pull on the connector itself, notthe wire harness.

HINT : Check to see what kind of connector you aredisconnecting before pulling apart.

10

3

0.21

1

(mm)

Reference:

ToolUpExample:(Case 1)

Terminal Retainer

Terminal Retainer

[Retainer at Full Lock Position]

[Retainer at Temporary Lock Position]

StopperTerminalRetainer

SecondaryLocking Device

Example:(Case 2)


C TROUBLESHOOTINGHOW TO REPLACE TERMINAL(with terminal retainer or secondary locking device)1. PREPARE THE SPECIAL TOOL

HINT : To remove the terminal from the connector, pleaseconstruct and use the special tool or like object shown onthe left.

2. DISCONNECT CONNECTOR

3. DISENGAGE THE SECONDARY LOCKING DEVICE ORTERMINAL RETAINER.

(a) Locking device must be disengaged before the terminallocking clip can be released and the terminal removed fromthe connector.

(b) Use a special tool or the terminal pick to unlock the secondarylocking device or terminal retainer.

NOTICE:Do not remove the terminal retainer from connector body.

[A] For NonWaterproof Type Connector

HINT : The needle insertion position varies according to theconnectors shape (number of terminals etc.), socheck the position before inserting it.

Case 1Raise the terminal retainer up to the temporary lockposition.

Case 2Open the secondary locking device.

ToolTab

Tab

TerminalRetainer

Access Hole( Mark)

Tool

Tool

[Female]

Example:

[Male]

(Case 1)

[Male] [Female]

Retainerat Full Lock Position

Retainerat Temporary Lock Position

Terminal Retainer

[Male] Press Down [Female]Press Down

ToolTool

Example:(Case 2)


C

[B] For Waterproof Type ConnectorHINT : Terminal retainer color is different

according to connector body.Example:Terminal Retainer : Connector BodyBlack or White : GrayBlack or White : Dark GrayGray or White : Black

Case 1Type where terminal retainer is pulledup to the temporary lock position (PullType).Insert the special tool into the terminalretainer access hole (Mark) and pullthe terminal retainer up to thetemporary lock position.

HINT : The needle insertion position variesaccording to the connectors shape(Number of terminals etc.), so checkthe position before inserting it.

Case 2Type which cannot be pulled as far asPower Lock insert the tool straight intothe access hole of terminal retainer asshown.

Retainer atFull Lock Position

[Male] [Female]Retainer atTemporary Lock Position

Locking Lug

Tool


C TROUBLESHOOTINGPush the terminal retainer down to the temporary lock position.

(c) Release the locking lug from terminal and pull the terminal outfrom rear.

4. INSTALL TERMINAL TO CONNECTOR

(a) Insert the terminal.HINT:1. Make sure the terminal is positioned correctly.2. Insert the terminal until the locking lug locks firmly.3. Insert the terminal with terminal retainer in the temporary lock

position.

(b) Push the secondary locking device or terminal retainer in tothe full lock position.

5. CONNECT CONNECTOR

* The titles given inside the components are the names of the terminals (terminal codes) and are not treated as beingabbreviations.


ABBREVIATIONS D

ABBREVIATIONSThe following abbreviations are used in this manual.A/C = Air ConditioningA/T = Automatic TransmissionABS = AntiLock Brake SystemADD = Automatic Disconnecting DifferentialCOMB. = CombinationDIFF. = Differential

ECU = Electronic Control UnitEGR = Exhaust Gas RecirculationESA = Electronic Spark AdvanceEVAP = Evaporative EmissionINT = Intermittent

J/B = Junction BlockLH = LeftHand

M/T = Manual TransmissionO/D = OverdriveR/B = Relay BlockRH = RightHandSFI = Sequential Multiport Fuel InjectionSPEC. = SpecificationSRS = Supplemental Restraint SystemSW = SwitchTEMP. = TemperatureVSV = Vacuum Switching Valvew/ = Withw/o = Without2WD = Two Wheel Drive Vehicles

4WD = Four Wheel Drive Vehicles


E GLOSSARY OF TERMS AND SYMBOLSBATTERY

Stores chemical energy andconverts it into electrical energy.Provides DC current for the autosvarious electrical circuits.

GROUNDThe point at which wiring attaches tothe Body, thereby providing a returnpath for an electrical circuit; without aground, current cannot flow.

CAPACITOR (Condenser)A small holding unit for temporarystorage of electrical voltage.

HEADLIGHTSCurrent flow causes a headlightfilament to heat up and emit light. Aheadlight may have either a single(1) filament or a double (2) filament

1. SINGLE FILAMENT

CIGARETTE LIGHTERAn electric resistance heatingelement.

2. DOUBLE FILAMENT

CIRCUIT BREAKERBasically a reusable fuse, a circuitbreaker will heat and open if toomuch current flows through it.Some units automatically reset whencool, others must be manually reset.

HORNAn electric device which sounds aloud audible signal.

DIODEA semiconductor which allowscurrent flow in only one direction.

IGNITION COILConverts lowvoltage DC currentinto highvoltage ignition current forfiring the spark plugs.

DIODE, ZENERA diode which allows current flow in onedirection but blocks reverse flow only upto a specific voltage. Above that potential,it passes the excess voltage. This acts asa simple voltage regulator.

LIGHTCurrent flow through a filamentcauses the filament to heat up andemit light.

PHOTODIODEThe photodiode is a semiconductorwhich controls the current flowaccording to the amount of light.

LED (LIGHT EMITTING DIODE)Upon current flow, these diodes emitlight without producing the heat of acomparable light.

DISTRIBUTOR, IIAChannels highvoltage current fromthe ignition coil to the individualspark plugs.

METER, ANALOGCurrent flow activates a magneticcoil which causes a needle to move,thereby providing a relative displayagainst a background calibration.

FUSEA thin metal strip which burns throughwhen too much current flows through it,thereby stopping current flow andprotecting a circuit from damage.

FUSIBLE LINK

METER, DIGITALCurrent flow activates one or manyLEDs, LCDs, or fluorescentdisplays, which provide a relative ordigital display.

FUEL

FUSIBLE LINKA heavygauge wire placed in highamperage circuits which burns through onoverloads, thereby protecting the circuit.The numbers indicate the crosssectionsurface area of the wires.

(for Medium Current Fuse)

(for High Current Fuse or Fusible Link)

MOTORA power unit which convertselectrical energy into mechanicalenergy, especially rotary motion.M


ERELAY

Basically, an electrically operatedswitch which may be normallyclosed (1) or open (2).Current flow through a small coilcreates a magnetic field which eitheropens or closes an attached switch.

1. NORMALLY CLOSED

2. NORMALLY OPEN

SWITCH, MANUALOpens and closesi it th b

SPEAKERAn electromechanical device whichcreates sound waves from currentflow.

RELAY, DOUBLE THROWA relay which passes currentthrough one set of contacts or theother.

circuits, therebystopping (1) orallowing (2) currentflow.

1. NORMALLY OPEN

2. NORMALLY CLOSED

RESISTORAn electrical component with a fixedresistance, placed in a circuit toreduce voltage to a specific value.

SWITCH, DOUBLE THROWA switch which continuously passescurrent through one set of contactsor the other.

RESISTOR, TAPPEDA resistor which supplies two ormore different non adjustableresistance values.

SWITCH, IGNITIONA key operated switch with severalpositions which allows variouscircuits, particularly the primaryignition circuit, to becomeoperational.

RESISTOR, VARIABLE or RHEOSTATA controllable resistor with a variablerate of resistance.Also called a potentiometer orrheostat.

SENSOR (Thermistor)A resistor which varies its resistancewith temperature.

SWITCH, WIPER PARKAutomatically returns wipers to thestop position when the wiper switchis turned off.

(Reed Switch Type)

SENSOR, SPEEDUses magnetic impulses to openand close a switch to create a signalfor activation of other components.

TRANSISTORA solidstate device typically used asan electronic relay; stops or passescurrent depending on the voltageapplied at base.

SHORT PINUsed to provide an unbrokenconnection within a junction block.

WIRESWires are always drawn asstraight lines on wiringdiagrams.Crossed wires (1) without ablack dot at the junction are

t j i d

(1) NOT CONNECTED

SOLENOIDAn electromagnetic coil which formsa magnetic field when current flows,to move a plunger, etc.

jnot joined;crossed wires (2) with ablack dot or octagonal ( )mark at the junction arespliced (joined)connections.

(2) SPLICED


F RELAY LOCATIONS[Engine Compartment]

[Instrument Panel]


F2 : R/B No.2 Engine Compartment Left (See Page 20)


F RELAY LOCATIONS

: J/B No.1 Lower Finish Panel (See Page 20)


F


F RELAY LOCATIONS[J/B No.1 Inner Circuit]


F


F RELAY LOCATIONS

: J/B No.3 Behind the Instrument Panel Left (See Page 20)


F[J/B No.3 Inner Circuit]


F RELAY LOCATIONS

: J/B No.3 Behind the Instrument Panel Center (See Page 20)


F[J/B No.3 Inner Circuit]


G ELECTRICAL WIRING ROUTINGPosition of Parts in Engine Compartment

[5VZFE]

A 5 A/C Magnetic ClutchA 7 A/T Oil Temp. SensorA22 ABS Actuator with ECUA23 Air Fuel Ratio Sensor (Bank 1 Sensor 1)A24 ADD ActuatorA29 Accel Position Sensor

B 1 BackUp Light SWB 2 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 2 Crankshaft Position SensorC 3 Cruise Control Actuator

D 3 Detection SW (Transfer L4 Position)D 4 Detection SW (Transfer Neutral Position)D 5 Detection SW (Transfer 4WD Position)

E 2 Electronically Controlled Transmission SolenoidE 3 Engine Coolant Temp. Sensor

F 1 Front ABS Speed Sensor LHF 2 Front ABS Speed Sensor RHF 3 Front Turn Signal Light LHF 4 Front Turn Signal Light RHF 9 Front Airbag Sensor LHF 10 Front Airbag Sensor RHF 11 Fuse Box

G 1 GeneratorG 2 Generator

H 1 Headlight LHH 2 Headlight RHH 5 Horn (High)H10 Horn (Low)


GPosition of Parts in Engine Compartment

[5VZFE]

I 1 Idle Air Control ValveI 2 IgniterI 3 Ignition Coil No.1I 4 Ignition Coil No.2I 5 Ignition Coil No.3I 6 Injector No.1I 7 Injector No.2I 8 Injector No.3I 9 Injector No.4I 10 Injector No.5I 11 Injector No.6

J 9 Junction ConnectorJ 10 Junction Connector

K 2 Knock Sensor 1K 3 Knock Sensor 2

M 1 Mass Air Flow Meter

O 2 Oil Pressure SW

P 1 Park/Neutral Position SWP 2 Parking Light LHP 3 Parking Light RHP10 Power Steering Oil Pressure SW

S 1 StarterS 2 Starter

T 1 Throttle Position SensorT 2 24 Select MotorT 7 Throttle Control MotorT 8 TVIP Warning Buzzer

V 1 Vehicle Speed Sensor (Electronically Controlled Transmission)

V 4 VSV (EVAP)V10 Vehicle Speed SensorV 11 VSV (Canister Closed Valve)

W 1 Washer Motor and Washer Level Sensor (Cold Area Spec.) or Washer Motor (Except Cold Area Spec.)

W 2 Water Temp. SenderW 3 Wiper Motor


G ELECTRICAL WIRING ROUTINGPosition of Parts in Engine Compartment

[3RZFE, 2RZFE]

A 5 A/C Magnetic ClutchA 7 A/T Oil Temp. SensorA22 ABS Actuator with ECUA23 Air Fuel Ratio Sensor (Bank 1 Sensor 1)A24 ADD Actuator

B 1 BackUp Light SWB 2 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 2 Crankshaft Position SensorC 3 Cruise Control Actuator

D 3 Detection SW (Transfer L4 Position)D 4 Detection SW (Transfer Neutral Position)D 5 Detection SW (Transfer 4WD Position)

E 1 EGR Gas Temp. SensorE 2 Electronically Controlled Transmission SolenoidE 3 Engine Coolant Temp. Sensor

F 1 Front ABS Speed Sensor LHF 2 Front ABS Speed Sensor RHF 3 Front Turn Signal Light LHF 4 Front Turn Signal Light RHF 9 Front Airbag Sensor LHF 10 Front Airbag Sensor RHF 11 Fuse Box

G 1 GeneratorG 2 Generator

H 1 Headlight LHH 2 Headlight RHH 5 Horn (High)H10 Horn (Low)


GPosition of Parts in Engine Compartment

[3RZFE, 2RZFE]

I 1 Idle Air Control ValveI 6 Injector No.1I 7 Injector No.2I 8 Injector No.3I 9 Injector No.4I 20 Ignition Coil and Igniter No.1I 21 Ignition Coil and Igniter No.2I 22 Ignition Coil and Igniter No.3I 23 Ignition Coil and Igniter No.4

J 9 Junction ConnectorJ 10 Junction Connector

K 1 Knock Sensor

M 1 Mass Air Flow Meter

N 1 Noise Filter (Ignition System)

O 1 O/D SolenoidO 2 Oil Pressure SW

P 1 Park/Neutral Position SWP 2 Parking Light LHP 3 Parking Light RHP10 Power Steering Oil Pressure SW

S 1 StarterS 2 Starter

T 1 Throttle Position SensorT 8 TVIP Warning Buzzer

V 1 Vehicle Speed Sensor (Electronically Controlled Transmission)

V 3 VSV (EGR)V 4 VSV (EVAP)V10 Vehicle Speed SensorV 11 VSV (Canister Closed Valve)

W 1 Washer Motor and Washer Level Sensor (Cold Area Spec.) or Washer Motor (Except Cold Area Spec.)

W 2 Water Temp. SenderW 3 Wiper Motor


G ELECTRICAL WIRING ROUTINGPosition of Parts in Instrument Panel

A 9 ABS Deceleration SensorA13 A/C Dual Pressure SWA15 A/C ThermistorA18 Airbag Squib (Steering Wheel Pad)A19 Ashtray IlluminationA21 Airbag Squib (Front Passenger Airbag Assembly)A25 A/C Control AssemblyA26 Air Inlet Control Servo Motor A27 Air Mix Control Servo MotorA28 Air Vent Mode Control Servo Motor

B 4 Blower MotorB 5 Blower Resistor

C 4 Cigarette LighterC 5 Cigarette Lighter IlluminationC 6 Circuit Opening RelayC 7 ClockC 8 Clutch Start Cancel SWC 9 Clutch Start SW

C10 Combination MeterC12 Combination MeterC13 Combination MeterC14 Combination SWC15 Combination SWC16 Cruise Control Clutch SWC17 Cruise Control ECUC19 Combination SWC20 Center Airbag Sensor AssemblyC21 Center Airbag Sensor AssemblyC22 Center Airbag Sensor Assembly

D 7 Data Link Connector 3D 8 Daytime Running Light Relay (Main)D 9 Daytime Running Light Relay No.4D13 Diode (Daytime Running Light System)D15 Door Courtesy SW Front LHD16 Door Courtesy SW Front RHD25 Diode (A/T)D30 Diode (ABS)


GPosition of Parts in Instrument Panel

E 4 Electronically Controlled Transmission Pattern Select SW

E 5 Engine Control ModuleE 6 Engine Control ModuleE 7 Engine Control ModuleE 8 Engine Control ModuleE10 Engine Control Module

F 6 4WD ECU

G 3 Glove Box Light

H 6 Hazard SWH 7 Heater Blower SWH 9 Heated Oxygen Sensor (Bank 1 Sensor 2)

I 14 Ignition SW

J 1 Junction ConnectorJ 11 Junction ConnectorJ 13 Junction Connector

O 6 O/D ECU

P 4 Parking Brake SWP13 Power OutletP14 Power OutletP19 Passenger Airbag Manual On/Off IndicatorP20 Passenger Airbag Manual On/Off SW

R 1 Radio and PlayerR 2 Radio and PlayerR 3 RheostatR 4 RheostatR15 Rear Diff. Lock SWR16 Rear Diff. Lock ECU

S 4 Shift Lock Control Relay and O/D Main SWS 5 Stop Light SW

T 3 24 Select SWT 4 Transmission Control RelayT 9 TVIP ECU

U 1 Unlock Warning SW


G ELECTRICAL WIRING ROUTINGPosition of Parts in Body

[Double Cab]

B 6 Buckle SW LH

D20 Door Lock Control SW RHD21 Door Lock Motor, Door Unlock Detection SW and

Door Key Lock and Unlock SW Front LHD22 Door Lock Motor, Door Unlock Detection SW and

Door Key Lock and Unlock SW Front RHD26 Door Courtesy SW Rear LHD27 Door Courtesy SW Rear RHD28 Door Lock Motor Rear LHD29 Door Lock Motor Rear RH

F 8 Fuel Pump and Sender

H 8 High Mounted Stop Light

I 16 Interior Light

L 1 License Plate Light LHL 2 License Plate Light RH

P 5 Personal LightP 6 Power Window Control SW Front RHP 7 Power Window Master SW and

Door Lock Control SW LHP 8 Power Window Motor Front LHP 9 Power Window Motor Front RH

P21 Pretensioner LHP22 Pretensioner RHP25 Power Window Control SW Rear LHP26 Power Window Control SW Rear RHP27 Power Window Motor Rear LHP28 Power Window Motor Rear RH

R 6 Rear Combination Light LHR 7 Rear Combination Light RHR 8 Remote Control Mirror LHR 9 Remote Control Mirror RHR10 Remote Control Mirror SWR11 Rear ABS Speed Sensor LHR12 Rear ABS Speed Sensor RHR13 Rear Diff. Lock Detection SWR14 Rear Diff. Lock Motor

S 6 Speaker (Front Door LH)S 7 Speaker (Front Door RH)S 8 Speaker (Rear LH)S 9 Speaker (Rear RH)

T 5 Tweeter LHT 6 Tweeter RH

V 8 Vapor Pressure SensorV12 VSV (Pressure Switching Valve)


GPosition of Parts in Body

[Except Double Cab]

B 6 Buckle SW LH

D20 Door Lock Control SW RHD21 Door Lock Motor, Door Unlock Detection SW and

Door Key Lock and Unlock SW Front LHD22 Door Lock Motor, Door Unlock Detection SW and

Door Key Lock and Unlock SW Front RH

F 8 Fuel Pump and Sender

H 8 High Mounted Stop Light

I 16 Interior Light

L 1 License Plate Light LHL 2 License Plate Light RH

P 5 Personal LightP 6 Power Window Control SW Front RHP 7 Power Window Master SW and

Door Lock Control SW LHP 8 Power Window Motor Front LHP 9 Power Window Motor Front RH

P21 Pretensioner LHP22 Pretensioner RH

R 6 Rear Combination Light LHR 7 Rear Combination Light RHR 8 Remote Control Mirror LHR 9 Remote Control Mirror RHR10 Remote Control Mirror SWR11 Rear ABS Speed Sensor LHR12 Rear ABS Speed Sensor RHR13 Rear Diff. Lock Detection SWR14 Rear Diff. Lock Motor

S 6 Speaker (Front Door LH)S 7 Speaker (Front Door RH)S 8 Speaker (Rear LH)S 9 Speaker (Rear RH)

T 5 Tweeter LHT 6 Tweeter RH

V 8 Vapor Pressure SensorV12 VSV (Pressure Switching Valve)


G ELECTRICAL WIRING ROUTINGPosition of Parts in Seat

P23 Power Seat Motor (Lumbar Support)P24 Power Seat SW (Lumbar Support)


MEMO


G ELECTRICAL WIRING ROUTING: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[5VZFE]

: Location of Splice Points


GConnector Joining Wire Harness and Wire Harness

1 23 4

2 134

1 2 3654

3 2 1456 3

1 23

12

1 2 2 1

21 2 1

EA1 BLACK EB3 GRAY

EF1 GRAY

(4WD) ED1 DARK GRAY

EE1 GRAY

Code Joining Wire Harness and Wire Harness (Connector Location)EA1 Engine Room Main Wire and Engine No.2 Wire (Near the Battery)EB3 Engine Wire and Differential Wire (Front Differential Upper Side)ED1 Sensor Wire and Engine Wire (Over the Cylinder Head)EE1 Engine Wire and Sensor Wire (Over the Cylinder Head)EF1 Cowl Wire and Engine Room Main Wire (Front Right Fender)



[3RZFE, 2RZFE]




1 23 4

2 134

1 2 3654

3 2 1456 21 2 1

EA1 BLACK EB3 GRAY EF1 GRAY(4WD)

Code Joining Wire Harness and Wire Harness (Connector Location)EA1 Engine Room Main Wire and Engine No.2 Wire (Near the Battery)EB3 Engine Wire and Differential Wire (Front Differential Upper Side)EF1 Cowl Wire and Engine Room Main Wire (Front Right Fender)



Code Joining Wire Harness and Wire Harness (Connector Location)IF1IF2 Engine Room Main Wire and Cowl Wire (Left Kick Panel)IF3

g ( )

IG1 Cowl Wire and Roof Wire (Left Kick Panel)IH1IH2 Front Door LH Wire and Cowl Wire (Left Kick Panel)IH3

( )

IK2IK3 Engine Wire and Cowl Wire (Above the Glove Box)IK6

g ( )

IL1Front Door RH Wire and Cowl Wire (Right Kick Panel)IL2 Front Door RH Wire and Cowl Wire (Right Kick Panel)


G ELECTRICAL WIRING ROUTING: Location of Connector Joining Wire Harness and Wire Harness

[Double Cab]




421

3 56 7

42 1

3567

1 23 4

2 14 3

1 23 4 5 6

7 8123456

78

1 2 2 11 23 4 5 6

7 8

123456

78

1 2 2 1

12 3

4

56 7 8 9 10 11

12

1314 15 16 17 18 19 20

2122 23 24 25 26

43 2

1

1211 10 9 8 7 6

5

2120 19 18 17 16 15 14

1326 25 24 23 22

BN7

BO1 BO2 BQ1

BQ2 BR1 BR2

GRAY

GRAY

Code Joining Wire Harness and Wire Harness (Connector Location)BN7 Frame Wire and Cowl Wire (Under the Drivers Seat)BO1

Frame Wire and Differential No 2 Wire (Rear Side Member LH)BO2 Frame Wire and Differential No.2 Wire (Rear Side Member LH)BQ1

Rear Door No 2 Wire and Cowl Wire (Under the Left Center Pillar)BQ2 Rear Door No.2 Wire and Cowl Wire (Under the Left Center Pillar)BR1

Rear Door No 1 Wire and Cowl Wire (Under the Right Center Pillar)BR2 Rear Door No.1 Wire and Cowl Wire (Under the Right Center Pillar)



[Except Double Cab]




421

3 56 7

42 1

3567

1 23 4

2 14 3 1 2 2 1

1 2 2 1

12 3

4

56 7 8 9 10 11

12

1314 15 16 17 18 19 20

2122 23 24 25 26

43 2

1

1211 10 9 8 7 6

5

2120 19 18 17 16 15 14

1326 25 24 23 22

1 23 4

2 14 3

BO1 BO2 BS1

GRAY

GRAY

BT1

BN7 GRAY

BV1

Code Joining Wire Harness and Wire Harness (Connector Location)BN7 Frame Wire and Cowl Wire (Under the Drivers Seat)BO1

Frame Wire and Differential No 2 Wire (Rear Side Member LH)BO2 Frame Wire and Differential No.2 Wire (Rear Side Member LH)BS1 Rear Speaker LH Wire and Cowl Wire (Under the Left Center Pillar)BT1 Rear Speaker RH Wire and Cowl Wire (Under the Right Center Pillar)BV1 Frame Wire and Skid Control Sensor Wire (Rear Side Member LH)



1 2 12

BU1

Code Joining Wire Harness and Wire Harness (Connector Location)BU1 Cowl Wire and Seat No.1 Wire (Under the Drivers Seat)


MEMO


SYSTEM CIRCUITS H

2003 TOYOTA TACOMAELECTRICAL WIRING DIAGRAM

SYSTEM CIRCUITSPage

ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220Automatic Transmission (2RZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134BackUp Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Combination Meter (w/ Tachometer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208Combination Meter (w/o Tachometer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214Cruise Control (Except 5VZFE 2WD M/T,3RZFE and 2RZFE) . . . . . . . . . . 138Cruise Control (5VZFE 2WD M/T,3RZFE and 2RZFE) . . . . . . . . . . . . . . . . . 144Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178Electronically Controlled Transmission (3RZFE) . . . . . . . . . . . . . . . . . . . . . . 128Electronically Controlled Transmission (5VZFE) . . . . . . . . . . . . . . . . . . . . . . 122Engine Control (2RZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Engine Control (3RZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Engine Control (5VZFE except 2WD M/T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Engine Control (5VZFE 2WD M/T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Headlight (w/ Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Headlight (w/o Daytime Running Light) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154Ignition (3RZFE, 2RZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Ignition (5VZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196Light Auto Turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198Power Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204Rear Differential Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Remote Control Mirror (w/ Power Window) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188Remote Control Mirror (w/o Power Window) . . . . . . . . . . . . . . . . . . . . . . . . . . . 190Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157Starting (3RZFE, 2RZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Starting (5VZFE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Wiper and Washer (w/ Int time SW Mechanism) . . . . . . . . . . . . . . . . . . . . . . . . 192Wiper and Washer (w/o Int time SW Mechanism) . . . . . . . . . . . . . . . . . . . . . . . 1944WD (w/ 24 Select SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1624WD (w/o 24 Select SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168


POWER SOURCE

BW

BW

W

BY(*1)

BY(*2)

WR

R2

50A HEATER2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

YR R

BW

WB

R

BW

B

W

LW

V

BY

W

BATT

ERY

HEATER RELAY

LY

RW

WR

30A AM2

HEAD RELAY

15A DOME

20A EFI

7. 5A OBD

120A ALT

15A PWR OUTLET

40A AM1

60A ABS

TAIL RELAY

1 22

1 2

1 2

1 2

2 1

1 2

1 2

1 2

1 2

1

3

2

4

5

2

2

3

3

1

1

5

4

2W

2W

7. 5A ALTS

1 2

2BR1 2

50A J/B

BR

2P

15A ECTS

1 2

W30

A AB

S2

2

1

F11

FUSE

BO

X

BL


WR

W

BW

BW

* 1 : W/O DAYTIME RUNNING LIGHT

10A A. C

1

1

1

2

1K2

1I1

1I2

1I3

LW

2

10A HEAD(LH)

10A HEAD(RH)

10A HEAD(LO LH)

10A HEAD(LO RH)

10A HEAD(HI LH)

10A HEAD(HI RH)

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

E 3

BY2

7

3

4

6AM2

AM1

ACC

IG1

ST1

IG2

G

W

WR

RW

LR

BR

RL

G

BY

(*1)

(*1)

(*2)

(*2)

(*2)LR

(*2)L

(*2)BY

L(*2)

WR(*2)

VY(*2)

GW(*2)

7. 5A DRL

2

BY( *

2)

7. 5A STA

10A TURN

20A WIPER

15A ECUIG

20A 4WD

10A GAUGE

15A ACC

15A HORN. HAZ

IGNITION SWI14

DIMMERRELAY

* 2 : W/ DAYTIME RUNNING LIGHT

3

231

2

3

2

2

4

13

2

2

1 22

1

1

1

1

1

BY(

*2)

BY(*2)

BY(*1)

10A TAIL

1I4 7. 5A IGN

BR

10A STOP

7. 5A ECUB

1 2

30A POWER

B

BR


POWER SOURCE

HEATER RELAY12 : Closed with ignition SW on and heater blower SW on

HEAD RELAY21 : Closed with light control SW at HEAD position or dimmer SW at FLASH position

Closed with engine running and parking brake lever released (w/ daytime running light)I14 IGNITION SW

23 : Closed with ignition key at ACC or ON position24 : Closed with ignition key at ON or ST position76 : Closed with ignition key at ON or ST position

TAIL RELAY53 : Closed with light control SW at TAIL or HEAD position

DIMMER RELAY43 : Closed with HEAD relay on and dimmer SW at HIGH or FLASH position

: PARTS LOCATIONCode See Page Code See Page Code See PageI14 35

: RELAY BLOCKS

Code See Page Relay Blocks (Relay Block Location)2 21 R/B No.2 (Engine Compartment Left)


Code See Page Junction Block and Wire Harness (Connector Location)1I

23 Engine Room Main Wire and J/B No 1 (Lower Finish Panel)1K 23 Engine Room Main Wire and J/B No.1 (Lower Finish Panel)

: SPLICE POINTS

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice PointsE3 40 (5VZFE) Engine Room Main Wire E3 42 (3RZFE, 2RZFE) Engine Room Main Wire

SERVICE HINTS


MEMO


STARTING AND IGNITION (5VZFE)

5 3E

EA

21 IF1

2

(*1)G

10 3E

6 3E P

N

9

6

21

1

2

IK2

AM2

AM1

ACC

IG1

ST1

IG2

1

G( M

/T)

( M/T

)

( A/T

)

( A/T

)

(A/T)

( M/T

)

(* 1)

G

G(A/T)

GG

YGR

BY

GG

( *1)

WB

WB

WB

YGR

W

WRW

WRW

W

YGR

BR

B

BR

BR

YGR223E

C 9

CLUT

CH S

TART

SW

P 1

PARK

/NEU

TRAL

POSI

TIO

N SW

21 3E

20 3E

2

7

1

6

I 8

3 2

5 1

M

EA14

B1 A1

B

BW

BW

IGNITION SWI14

BATTERY

2

8 IK3

W

D A

E

STARTERRELAY

2 2

2 2

120A

ALT

2

2

1

40A

AM1

B

B30

A AM

2

1

2

2

JUNCTIONCONNECTOR

BJ 9 , J10A

STARTERBS 1 , S 2A

7. 5ASTA

1F6

1I3

3E7

GTO

BU

LB CH

ECK

RELA

Y[C

OM

B. M

ETER

]


IE

1

2

I13I13

1 IK2

17 IF1

( *1)

YG

R

(* 1)YGR

( *1)

( *1)

( *1)

( *1)

( *1)

WB

WB

WB

G WB

3A

I 9

3 5

1

20

3A16

IG

CLUT

CH ST

ART

CANC

EL SW

C 8

2

1

2

1

EB

3 7 6 5 4

891210

BR

BR

BR

BR

BR

BR

BR

GGY

GR

BL

LG

R

BW

BY

BRB

R

BR

IGN

ITIO

N CO

IL N

O. 1

I 3 IGN

ITIO

N CO

IL N

O. 2

I 4 IGN

ITIO

N CO

IL N

O. 3

I 5

IGNITERI 2

TO TA

CHO

MET

ER[C

OMB.

M

ETER

]

11 IK2

LG

B

BR

BR

10AGAUGE

FROM POWER SOURCE SYSTEM (SEE PAGE 54)

1F5

3D15

7

19 3D

IGT1 IGT2 IGT3 IGF

( *1)

11 10 9 2

ENGINE CONTROL MODULEE 7

( *1)

(* 1)G

LGB

* 1 : EXCEPT 2WD M/T


STARTING AND IGNITION (5VZFE)

S1 (A), S2 (B) STARTERPoints closed with Park/Neutral position SW at P or N position and ignition SW at ST position (A/T)Points closed with clutch start SW or clutch start cancel SW on and ignition SW at ST position (M/T)

I14 IGNITION SW76 : Closed with ignition SW at ON or ST position21 : Closed with ignition SW at ST position

P1 PARK/NEUTRAL POSITION SW (A/T)96 : Closed with A/T shift lever in P or N position

STARTER RELAY53 : Closed with Park/Neutral position SW at P or N position and ignition SW at ST position (A/T)53 : Closed with clutch start SW or clutch start cancel SW on and ignition SW at ST position (M/T)

C8 CLUTCH START CANCEL SW (M/T)13 : Closed with ignition SW on and cancel SW on

C9 CLUTCH START SW (M/T)12 : Closed with clutch pedal fully depressed

: PARTS LOCATIONCode See Page Code See Page Code See PageC8 34 I4 31 (5VZFE) P1 31 (5VZFE)C9 34 I5 31 (5VZFE) S1 A 31 (5VZFE)E7 35 I14 35 S2 B 31 (5VZFE)I2 31 (5VZFE) J9 A 31 (5VZFE)I3 31 (5VZFE) J10 B 31 (5VZFE)

: RELAY BLOCKS

Code See Page Relay Blocks (Relay Block Location)2 21 R/B No.2 (Engine Compartment Left)


Code See Page Junction Block and Wire Harness (Connector Location)1F 23 Cowl Wire and J/B No.1 (Lower Finish Panel)1I 23 Engine Room Main Wire and J/B No.1 (Lower Finish Panel)3A3D 24 Cowl Wire and J/B No.3 (Behind the Instrument Panel Left)3E

( )

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESSCode See Page Joining Wire Harness and Wire Harness (Connector Locati

toyota tacoma workshop manual

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