Diagram sections — 24 (56 total)
AIR CONDITIONING ANTI-LOCK BRAKES BODY CONTROL MODULES COMPUTER DATA LINES CRUISE CONTROL ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Heater Wiring Diagram for Toyota Tacoma 2003 List of elements for Heater Wiring Diagram for Toyota Tacoma 2003: 23 (at right side of dash) ie (in dash harness, at right kick panel) A j10 Blower motor (below right side of dash, in blower housing) Blower resistor (below right side of dash, in blower housing) C j9 Ea (at left front fender) Gauge fuse 10a Heater blower switch Heater fuse 50a Heater relay Hot at all times Hot in on or start I16 I19 J/b 1 (behind dash, left of steering column) J10 d J9 e Junction connector 9 & 10 (on left side of engine compartment, at r/b 2) Junction connector 9 & 10 (on left side of engine compt, at r/b 2) Off R/b 2 (on left side of engine compartment) Red Manual A/C Wiring Diagram for Toyota Tacoma 2003 List of elements for Manual A/C Wiring Diagram for Toyota Tacoma 2003: 57 (behind dash, above steering column) j/b 3 (left) (in dash harness, at right kick panel) i19 (in dash harness, at top left side of dash) i7 (in engine compt harness, at left side of engine compt) e3 2.4l, 2.7l 3.4l A j10 A/c control assembly A/c dual pressure switch (behind right side of dash) A/c fuse 10a A/c magnetic clutch A/c thermistor (behind right side of dash) Ac1 Act Air inlet control servo motor Air mix control servo motor Air vent mode control servo motor B/l Blower motor (below right side of dash, in blower housing) Blower resistor (below right side of dash, in blower housing) C j9 D14 D19 Def Ea (at left front fender) Ecu-b fuse 7.5a Engine control module (behind right side of dash) F/d F15 F16 F17 Face Foot Frsh Gauge fuse 10a Gnd Heater blower switch Heater fuse 50a Heater relay Hot at all times Hot in on or start I10 (in dash harness, at center of dash) I16 I9 (in dash harness, at center of dash) Ie (at right side of dash) Ig (at left side of dash) Ig+ Interior lights system J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J10 Junction connector 9 & 10 (on left side of engine compartment, at r/b 2) Off R/b 2 (on left side of engine compartment) Recirc Red
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Toyota Tacoma 2003 List of elements for Anti-lock Brakes Wiring Diagram for Toyota Tacoma 2003: 63 +bm +bs A/t Abs 2 fuse 30a Abs actuator w/ ecu (on right rear of engine compt) Abs deceleration sensor (4wd and pre-runner) (behind dash, left of steering column) Abs fuse 60a Abs inverter Abs warning light ind C13 Combination meter D/g D16 D19 Data link connector (dlc) 3 (below left center of dash) Detection switch (on transmission) Diode (abs) (behind upper left side of dash) Ec (at right front fender) Ecu-ig fuse 15a Exi Exi2 Exi4 F12 Fl+ Fl- Fr+ Fr- Fuse box (on left side of engine compt) Gauge fuse 10a Ggnd Gl1 Gnd Hot at all times Hot in on or start Ie (at right side of of dash) Ig (at left side of of dash) Ig1 J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Junction connector 11 (above glove box) Junction connector 13 (above glove box) Left front abs speed sensor (on inside of left front wheel) Left rear abs speed sensor (on inside of left rear wheel) M/t Pnk R/b 2 (on left side of engine compt) Rear differential lock ecu (on upper left kick kick panel) Red Right front abs speed sensor (on inside of right front wheel) Right rear abs speed sensor (on inside of right rear wheel) Rl+ Rl- Rr+ Rr- Sil Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp Transmissions system Vgs W/ rear differential lock W/o rear differential lock
BODY CONTROL MODULES Body Control Modules Wiring Diagram for Toyota Tacoma 2003 List of elements for Body Control Modules Wiring Diagram for Toyota Tacoma 2003: 43 (in dash harness, at left kick panel) (except 3.4l) i2 (not used) Acc fuse 15a Body ecu Dome fuse 15a Door locks system Ecu-ig fuse 15a Exterior lights system Flasher relay G11 H10 Headlights system Horn haz fuse 15a Horns system Hot at all times Hot in acc or on Hot in on or start I1 (3.4l) (in dash harness, at left kick panel) Ig (at left side of dash) Interior lights system J/b 1 (behind dash, left of steering column) L10 L11 L13 L14 L15 L19 L20 L21 L22 Left front door courtesy switch Left rear door courtesy switch Power fuse 30a Power windows system Pwr relay R/b 2 (on left side of engine compartment) Red Right front door courtesy switch Right rear door courtesy switch Seats system W/ double cab Warning system Wiper fuse 20a
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Toyota Tacoma 2003 List of elements for Computer Data Lines Wiring Diagram for Toyota Tacoma 2003: 50 (2.4l/2.7l) (above glove box) j/c 11 (at ignition coil bracket) (in dash harness, at center of dash) (under data link connector 1) 2.7l/2.4l 3.4l 3.4l 2wd m/t, 2.7l, 2.4l A/b A15 A16 Abs actuator with ecu (on right rear of engine compt) Bat C10 C12 C13 C21 Center air bag sensor assembly (below center of dash) Combination meter Control circuit Cruise control ecu (on right kick panel) Cruise ind D/g D16 D19 D20 Data link connector (dlc) 3 (below left center of dash) Eb (3.4l) Engine control module (behind right side of dash) F16 F20 Gauge fuse 10a H14 H15 H16 Hot at all times Hot in on or start I14 (3.4l 2wd m/t, 2.7l, 2.4l) Ie (at right side of dash) Igniter J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Obd fuse 7.5a R/b 2 (on left side of engine compartment) Sil Srs ind Tac W/ tachometer Wfse
CRUISE CONTROL
2.4L 2.4L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003 List of elements for 2.4L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003: 64 (2.4l a/t) (a/t) (m/t) 2.4l 2.7l only 3.4l A/t A/t except 2.4l A/t indicator switch (park/neutral position switch) A10 A11 A16 A19 C10 C13 Cancel Ccs Combination meter Combination switch Cruise Cruise control actuator Cruise control clutch switch (on bracket, above clutch pedal) Cruise control ecu (on right kick panel) Cruise control ind Cruise control switch D13 D16 D17 D18 D19 Data link connector (dlc) 3 (below left center of dash) E5 odi Ect Ecu-ig fuse 15a Engine control module (behind right side of dash) Ex 3.4l Except 2.4l Gauge fuse 10a Gnd H11 H12 H13 Hot at all times Hot in on or start I14 Idl Idlo Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Junction connector 11 (above glove box) O/d ecu (below center of dash) Od1 Res/ acc Set/ coast Spd Speedo- meter Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp- Vehicle speed sensor (on transmission) W/ tacho meter
2.7L 2.7L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003 List of elements for 2.7L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003: 64 (2.4l a/t) (a/t) (m/t) 2.4l 2.7l only 3.4l A/t A/t except 2.4l A/t indicator switch (park/neutral position switch) A10 A11 A16 A19 C10 C13 Cancel Ccs Combination meter Combination switch Cruise Cruise control actuator Cruise control clutch switch (on bracket, above clutch pedal) Cruise control ecu (on right kick panel) Cruise control ind Cruise control switch D13 D16 D17 D18 D19 Data link connector (dlc) 3 (below left center of dash) E5 odi Ect Ecu-ig fuse 15a Engine control module (behind right side of dash) Ex 3.4l Except 2.4l Gauge fuse 10a Gnd H11 H12 H13 Hot at all times Hot in on or start I14 Idl Idlo Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Junction connector 11 (above glove box) O/d ecu (below center of dash) Od1 Res/ acc Set/ coast Spd Speedo- meter Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp- Vehicle speed sensor (on transmission) W/ tacho meter
3.4L 3.4L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003 List of elements for 3.4L, Cruise Control Wiring Diagram, M/T with 2-Wheel Drive for Toyota Tacoma 2003: 64 (2.4l a/t) (a/t) (m/t) 2.4l 2.7l only 3.4l A/t A/t except 2.4l A/t indicator switch (park/neutral position switch) A10 A11 A16 A19 C10 C13 Cancel Ccs Combination meter Combination switch Cruise Cruise control actuator Cruise control clutch switch (on bracket, above clutch pedal) Cruise control ecu (on right kick panel) Cruise control ind Cruise control switch D13 D16 D17 D18 D19 Data link connector (dlc) 3 (below left center of dash) E5 odi Ect Ecu-ig fuse 15a Engine control module (behind right side of dash) Ex 3.4l Except 2.4l Gauge fuse 10a Gnd H11 H12 H13 Hot at all times Hot in on or start I14 Idl Idlo Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Junction connector 11 (above glove box) O/d ecu (below center of dash) Od1 Res/ acc Set/ coast Spd Speedo- meter Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp- Vehicle speed sensor (on transmission) W/ tacho meter 3.4L, Cruise Control Wiring Diagram, Except M/T with 2-Wheel Drive for Toyota Tacoma 2003 List of elements for 3.4L, Cruise Control Wiring Diagram, Except M/T with 2-Wheel Drive for Toyota Tacoma 2003: 76 (at right rear (in dash harness, at right side of dash) (on bracket, above (on transmission) +bm Above steering Accel position sensor (behind dash, left of steering column) B17 B19 Batt Body) Brake pedal) C10 C13 Cancel Ccs Cl+ Cl- Column) Combination meter Combination switch Cruise Cruise control switch Cruise ind D16 D17 D18 D19 E01 E02 E03 E04 E10 Ea (at left front fender) Eb (near throttle Ects fuse 15a Efi fuse 20a Efi relay Engine control module (behind right side of dash) F11 Gauge fuse 10a Geo1 Hot at all times Hot in on or start I13 Id (at left Ign fuse 7.5a Igsw J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, J10 Junction connector 9 & junction connector 10 j9 (on left side of engine compt, at r/b 2) Kick panel) Me01 Mrel Of engine) Park/neutral position switch Pnk R/b 2 (on left side of engine compartment) Red Res/ acc Sensor Set/ coast Sp1 Speedometer St1- Stop fuse 10a Stoplight switch Stp Throttle control motor Throttle position sensor (on throttle body assembly) Vehicle speed Vpa Vpa2 Vta Vta2
ENGINE PERFORMANCE
2.4L 2.4L, Engine Performance Wiring Diagram (1 of 4) for Toyota Tacoma 2003 List of elements for 2.4L, Engine Performance Wiring Diagram (1 of 4) for Toyota Tacoma 2003: 55 (behind dash, above steering column) j/b 3 (left) (left side of engine compt) j/c j9, j10 (on bracket, above brake pedal) stoplight switch (w/a/t) (w/tachometer) A/c system Ac1 Act Batt C10 C12 C16 C20 Combination meter Control circuit Cruise control system Ea (left front fender) Efi fuse 20a Efi relay Els Engine control module (behind right side of dash) G14 G17 G22 Hot at all times Hot in on or start I12 (dash harn, at right side of dash) I9 (dash harn, at center of dash) Idlo Ie (at right side of dash) Ign fuse 7.5a J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/b 3 (left) (w/ cruise control) (behind dash, above steering column) J/c 13 (above glove box) J10 Malfunction indicator Nsw O/d main switch O/d off indicator Panel fuse 10a Power steering oil pressure switch (on power steering pump) Psw Ptnk R/b 2 (left side of engine compt) Sil Sp1 Speedometer Sta Starting/charging system Stop fuse 15a Stp Tac Tachometer 2.4L, Engine Performance Wiring Diagram (2 of 4) for Toyota Tacoma 2003 List of elements for 2.4L, Engine Performance Wiring Diagram (2 of 4) for Toyota Tacoma 2003: 33 (behind dash, above steering column) j/b 3 (left) (w/a/t) (w/m/t & 4wd) A15 A16 Batt Circuit opening relay (behind lower left of dash) Cruise control system Data link connector 3 (below left center of dash) Ecu-ig fuse 15a Ef (at ignition coil bracket) Fuel pump (in fuel tank) Gauge fuse 10a Hot at all times Hot in on or start Hot in start Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/c (above glove box) O/d ecu (below center of dash) O/d solenoid (on transmission) Obd fuse 10a Od1 Odlp Odms Park/neutral position switch (on transmission) R/b 2 (left side of engine compt) Sil Sol Sta fuse 7.5a Starting/ charging system Tac 2.4L, Engine Performance Wiring Diagram (3 of 4) for Toyota Tacoma 2003 List of elements for 2.4L, Engine Performance Wiring Diagram (3 of 4) for Toyota Tacoma 2003: 24 (behind dash, above steering column) j/b 3 (left) (dash harn, at right side of dash) (on exhaust system, rear of engine) heated oxygen sensor (bank 1, sensor 2) (on left side of engine) camshaft position sensor (on left side of engine) crankshaft position sensor Acc Eb (under data link connector 1) Ef (at ignition coil bracket) Hot at all times I13 I14 Ignition coil & igniter 1 (top of cyl head cover) Ignition coil & igniter 2 (top of cyl head cover) Ignition coil & igniter 3 (top of cyl head cover) Ignition coil & igniter 4 (top of cyl head cover) Ignition switch Injector 1 Injector 2 Injector 3 Injector 4 Lock Noise filter (right side of engine compartment) Red Start 2.4L, Engine Performance Wiring Diagram (4 of 4) for Toyota Tacoma 2003 List of elements for 2.4L, Engine Performance Wiring Diagram (4 of 4) for Toyota Tacoma 2003: 43 (left side of engine compartment) vsv (evap) (left side of engine compt, on fenderwell) vsv (vapor pressure sensor) (on exhaust system, rear of engine) air fuel ratio sensor (bank 1, sensor 1) (on rear of engine) engine coolant temperature sensor (on throttle body assembly) throttle position sensor (part of air intake assembly) mass airflow meter Af1+ Af1- At right side of dash) Ccv Data link connector 1 (left side of engine compt) E01 E02 E03 E04 E2g Ef (at ignition coil bracket) Engine control module (behind right side of dash) Evp1 Hafl Hts I13 I13 (dash harn, at right side of dash) Idle air control valve (on throttle body assembly) Igf Igt1 Igt2 Igt3 Igt4 Knk1 Knock sensor (on left side of engine) Ne+ Ne- Oxs Pnk Red Rsd Tha Thw Tpc Vapor pressure sensor Vsv (canister closed valve) (left side of eng compt) Vta
2.7L 2.7L, Engine Performance Wiring Diagram (1 of 4) for Toyota Tacoma 2003 List of elements for 2.7L, Engine Performance Wiring Diagram (1 of 4) for Toyota Tacoma 2003: 74 (4wd) (behind dash, above steering column) j/b 3 (left) (left kick panel) (left side of engine compt) j/c j9, j10 (on bracket, above brake pedal) stoplight switch (w/4wd) (w/a/t & 4wd) (w/a/t) (w/tachometer) 4wd A/c system A/t oil temperature Ac1 Act Batt C10 C12 C13 C16 C20 Control circuit Cruise control system Ea (left front fender) Efi fuse 20a Efi relay Els Engine control module (behind right side of dash) G17 G22 Hot at all times Hot in on or start I12 (dash harn, at right side of dash) I9 (dash harn, at center of dash) Idlo Ie (at right side of dash) Ign fuse 7.5a Instrument cluster J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/b 3 (left) (w/ cruise control) (behind dash, above steering column) J/c 10 J/c 13 (above glove box) J/c 9 Malfunction indicator Nsw O/d main switch O/d off indicator Od1 Odlp Odms Oilw Panel fuse 10a Pnk Power steering oil pressure switch (on power steering pump) Psw Ptnk Pwr R/b 2 (left side of engine compt) Red Sil Sp1 Sp2+ Sp2- Speedometer Sta Starting/charging system Stop fuse 15a Stp Tac Tachometer Tfn Transmissions system Vehicle speed sensor (on transmission) 2.7L, Engine Performance Wiring Diagram (2 of 4) for Toyota Tacoma 2003 List of elements for 2.7L, Engine Performance Wiring Diagram (2 of 4) for Toyota Tacoma 2003: 47 (4wd) (behind dash, above steering column) (behind dash, above steering column) j/b 3 (left) (w/a/t) (w/m/t & 4wd) A/t p A15 A16 Batt C10 C12 C13 Circuit opening relay (behind lower left end of dash) Combination meter Cruise control system Data link connector 3 (below left center of dash) Diode (behind left side of dash) Ect pwr Ef (at ignition coil bracket) Electronically controlled transmission pattern select switch F16 F20 Fuel pump (in fuel tank) Gauge fuse 10a H12 H13 Hot at all times Hot in on or start Hot in start I9 (dash harn, at center of dash) Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) J/b 3 (left) (behind dash, above steering column) J/c (above glove box) J/c 11 (above glove box) Obd fuse 10a Park/neutral position switch (on transmission) Pnk R/b 2 (left side of engine compt) Red Sil Sta fuse 7.5a Starting/ charging system Tac 2.7L, Engine Performance Wiring Diagram (3 of 4) for Toyota Tacoma 2003 List of elements for 2.7L, Engine Performance Wiring Diagram (3 of 4) for Toyota Tacoma 2003: 25 (behind dash, above steering column) j/b 3 (left) (dash harn, upper right side of dash) (on exhaust system, rear of engine) heated oxygen sensor (bank 1, sensor 2) (on left rear of engine) egr gas temperature sensor (on left side of engine) camshaft position sensor (on left side of engine) crankshaft position sensor Acc Eb (under data link connector 1) Ef (at ignition coil bracket) Hot at all times I13 I14 Ignition coil & igniter 1 (top of cyl head cover) Ignition coil & igniter 2 (top of cyl head cover) Ignition coil & igniter 3 (top of cyl head cover) Ignition coil & igniter 4 (top of cyl head cover) Ignition switch Injector 1 Injector 2 Injector 3 Injector 4 Lock Noise filter (right side of engine compartment) Red Start 2.7L, Engine Performance Wiring Diagram (4 of 4) for Toyota Tacoma 2003 List of elements for 2.7L, Engine Performance Wiring Diagram (4 of 4) for Toyota Tacoma 2003: 47 (left side of engine compartment) vsv (evap) (on exhaust system, rear of engine) air fuel ratio sensor (bank 1, sensor 1) (on rear of engine) engine coolant temperature sensor (on throttle body assembly) throttle position sensor (on top left rear of engine) vsv (egr) (on transmission) a/t oil temperature sensor (part of air intake assembly) mass airflow meter Af1+ Af1- At right side of dash) Cruise control system E01 E02 E03 E04 E2g Ef (at ignition coil bracket) Egr Electronically controlled transmission solenoid (on transmission) Engine control module (behind right side of dash) Evp1 Hafl Hts I13 I13 (dash harn, behind right center of dash) Idle air control valve (on throttle body assembly) Igf Igt1 Igt2 Igt3 Igt4 Knk1 Knock sensor (on left side of engine) Ne+ Ne- Oxs Pnk Red Rsd Tbp Tha Thg Tho Thw Vapor pressure sensor Vsv (vapor switching valve) Vta
3.4L 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (1 of 4) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (1 of 4) for Toyota Tacoma 2003: 66 (behind dash, above steering column) j/b 3 (left) (dash harn, at right side of dash) (dash harn, left end of dash) (left side of engine compt) j/c j9, j10 (left side of engine compt, on fenderwell) vsv (pressure switching valve) (on bracket, above brake pedal) stoplight switch (w/4wd) (w/a/t & 4wd) (w/a/t) +bm 4wd A/c system A/t oil temperature Ac1 Act Batt C10 C12 C13 Combination meter Control circuit Cruise control system Ea (right front fender) Ects fuse 15a Efi fuse 20a Efi relay Engine control module (behind right side of dash) G17 G22 Heated oxygen sensor (bank 1, sensor 2) (on exhaust system, rear of engine) Hot at all times Hot in on or start I12 (dash harn, at right side of dash) I13 I15 Ie (at right side of dash) Ign fuse 7.5a Igsw J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/c j13 (above glove box) J10 Malfunction indicator Mrel Nsw O/d main switch O/d off indicator Odlp Odms Oilw Pnk Pwr R/b 2 (left side of engine compt) Red Sil Sp1 Speedometer Sta Starting/ charging system Stop fuse 10a Stp Tachometer Tfn Transmissions system Wfse 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (2 of 4) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (2 of 4) for Toyota Tacoma 2003: 50 (behind dash, above steering column) j/b 3 (left) (w/a/t) (w/m/t & 4wd) A/t p A15 A16 Batt C10 C12 C13 Circuit opening relay (behind lower left end of dash) Cl+ Cl- Data link connector 3 (below left center of dash) Diode (behind top left side of dash) E10 Eb (near throttle body) Ect pwr Electronically controlled transmission pattern select switch Engine control module (behind right side of dash) F16 F20 Fuel pump (in fuel tank) Gauge fuse 10a Hot at all times Hot in on or start Hot in start I6 (dash harn, behind left side of dash) Ie (at right side of dash) Ig (at left side of dash) Ig (left kick panel) Instrument cluster J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J/b 3 (left) (behind dash, above str col) J/c j11 (above glove box) J/c j13 (above glove box) Obd fuse 10a Park/neutral position switch (on transmission) Pnk R/b 2 (left side of engine compt) Red Sil Slt+ Slt- Sta fuse 7.5a Starting/ charging system Vpa Vpa2 Wfse 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (3 of 4) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (3 of 4) for Toyota Tacoma 2003: 28 (at right rear of engine) throttle control motor (behind dash, above steering column) j/b 3 (left) (behind dash, left of steering column) accel position sensor (dash harn, at right side of dash) i13 (dash harn, upper right side of dash) (left side of eng compt) vsv (canister closed valve) (lower front of engine) crankshaft position sensor (top right front of engine) camshaft position sensor (w/ tachometer) Acc Eb (near throttle body) Hot at all times I13 I14 Igniter (on right side of engine compartment) Ignition coil 1 (top of cyl head cover) Ignition coil 2 (top of cyl head cover) Ignition coil 3 (top of cyl head cover) Ignition switch Injector 1 Injector 2 Injector 3 Injector 4 Injector 5 Injector 6 Lock Red Start 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (4 of 4) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, Except M/T with 2-Wheel Drive (4 of 4) for Toyota Tacoma 2003: 55 (engine harn, at front of eng) (left front of engine) engine coolant temperature sensor (left side of engine compartment) vsv (evap) (left side of firewall) vapor pressure sensor (on exhaust system, rear of engine) air fuel ratio sensor (bank 1, sensor 1) (on power steering pump) power steering oil pressure switch (on throttle body assembly) throttle position sensor (on transmission) a/t oil temperature sensor (part of air intake assembly) mass airflow meter Af1+ Af1- Ccv Computer data lines system E01 E02 E03 E05 E2g Eb (near throttle body) Electronically controlled transmission solenoid (on transmission) Engine control module (behind right side of dash) Evp1 Ge01 Ht2b Htaf1 I13 I13 (dash harn, (at right side of dash) Idle air control valve (on throttle body assembly) Igf Igt1 Igt2 Igt3 Knk1 Knk2 Knock sensor 1 (top front of engine) Knock sensor 2 (top front of engine) Me01 Ne+ Ne- Ox2b Pnk Psw Ptnk Red Rsc Rso Slt Sp2+ Sp2- Tbp Tha Thoc Thw Vehicle speed sensor (on transmission) Vta 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (1 of 3) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (1 of 3) for Toyota Tacoma 2003: 47 (dash harn, at right side of dash) (in dash harn, at left end of dash) (left side of engine compt) j/c 9,10 (left side of engine compt, on fenderwell) vsv (pressure switching valve) (on bracket, above brake pedal) stoplight switch A/c system Ac1 Act Batt C10 Circuit opening relay (below lower left end of dash) Combination meter Control circuit Cruise control system D19 D20 Ea (right front fender) Efi fuse 20a Efi relay Engine control module (behind right side of dash) Fuel pump (in fuel tank) Gauge fuse 10a Heated oxygen sensor (bank 1, sensor 2) (on exhaust system, rear of engine) Hot at all times Hot in on or start I13 I15 Idlo Ig (at left side of dash) Ign fuse 7.5a Igsw J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J10 Malfunction indicator Mrel R/b 2 (left side of engine compt) Red Sil Sp1 Speedometer Sta Starting/charging system Stop fuse 10a Stp Tachometer Wfse 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (2 of 3) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (2 of 3) for Toyota Tacoma 2003: 47 (behind dash, above steering column) j/b 3 (left) (dash harn, at right side of dash) (dash harn, at right side of dash) i13 (left side of eng compt) vsv (canister closed valve) (lower front of engine) crankshaft position sensor (top right front of engine) camshaft position sensor (w/ tachometer) A15 Acc Batt Cruise control system Data link connector 3 (below left center of dash) Eb (left shock tower) Eb (near throttle body) Gnd Hot at all times I13 I14 Ie (at right side of dash) Igc1 Igc2 Igc3 Igf Igniter (on right side of engine compartment) Ignition coil 1 (top of cyl head cover) Ignition coil 2 (top of cyl head cover) Ignition coil 3 (top of cyl head cover) Ignition switch Igt1 Igt2 Igt3 Injector 1 Injector 2 Injector 3 Injector 4 Injector 5 Injector 6 J/b 3 (left) (behind dash, above steering column) J/c (above glove box) Lock Obd fuse 10a R/b 2 (left side of engine compt) Red Sil Start Tach Wfse 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (3 of 3) for Toyota Tacoma 2003 List of elements for 3.4L, Engine Performance Wiring Diagram, M/T with 2-Wheel Drive (3 of 3) for Toyota Tacoma 2003: 46 (eng harn, at left side of engine) (engine harn, at front of engine) (left front of engine) engine coolant temperature sensor (left side of engine compartment) vsv (evap) (left side of firewall) vapor pressure sensor (on exhaust system, rear of engine) air fuel ratio sensor (bank 1 sensor 1) (on power steering pump) power steering oil pressure switch (on throttle body assembly) throttle position sensor (part of air intake assembly) mass airflow meter Af1+ Af1- Ccv Computer data lines system E01 E02 E05 E2g Eb (near throttle body Engine control module (behind right side of dash) Evp1 Ht2b Htaf1 I13 I13 (dash harn, at right side of dash) Idle air control valve (on throttle body assembly) Igf Igt1 Igt2 Igt3 Knk1 Knk2 Knock sensor 1 (top front of engine) Knock sensor 2 (top front of engine) Ne+ Ne- Ox2b Pnk Psw Ptnk Red Rsc Rso Tbp Tha Thw Vta
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Toyota Tacoma 2003 List of elements for Back-up Lamps Wiring Diagram for Toyota Tacoma 2003: 16 (2.4l) (except 2.4l) A/t Back- up light Back-up light switch (2.4l : on left side of transmission) (3.4l : on right side of transmission) Back-up light switch (park/neutral position switch) D18 D19 Gauge fuse 10a Hot in on or start Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) Left rear combination light M/t Right rear combination light Exterior Lamps Wiring Diagram for Toyota Tacoma 2003 List of elements for Exterior Lamps Wiring Diagram for Toyota Tacoma 2003: 58 (at left side of dash) (behind dash, above steering column) j/b 3 (left) (in engine compt harness, at left side of engine compt) (on left side of engine compt, at r/b 2) junction connector 9 & 10 (w/ drl) (w/o drl) A16 A17 Alt fuse 120a Body ecu C12 C14 Combination meter Combination switch E11 E12 Ea (at left front fender) F16 F20 Flasher relay H12 Hazard switch Head High mounted stop light Horn haz fuse 15a Hot at all times Hot in on or start Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J10 L15 Left front parking light Left front turn signal light Left license plate light Left rear combination light Left turn ind Light control switch Off R/b 2 (on left side of engine compartment) Red Right front parking light Right front turn signal light Right license plate light Right rear combination light Right turn ind Stop Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Tail Tail fuse 10a Tail relay Turn Turn fuse 10a Turn signal switch W/ drl W/o drl
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Toyota Tacoma 2003 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Toyota Tacoma 2003: 92 (2.4l) o/d ecu (right end of dash) (right side of dash) 2-4 select motor 2-4 select switch 4wd ecu A/c control assembly A12 A13 A15 A16 A17 A18 A20 Air vent mode control servo motor Automatic disconnecting differential (add) actuator B2 (in left front door) B3 (in right front door) Blower resistor C12 Cigarette lighter Clock Clutch start cancel switch Combi- nation switch Combination meter Cruse control actuator Cruse control ecu Cruse control switch Data link connector Daytime running light relay 4 Detection switch (4wd position) Detection switch (l4 position) Detection switch (neutral position) E11 E12 E13 F12 F13 F15 F16 F17 F18 F19 F20 F21 G14 G15 G16 G17 G18 G19 G20 G21 G22 Glove box light Heater blower switch I12 I12 (right side of dash) I13 I13 (right side of dash) I14 (right side of dash) I16 (right end of dash) I17 (right end of dash) I9 (center of dash) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Key interlock solenoid Left buckle switch Left door lock motor, door unlock detection switch, door key lock/ unlock switch O/d main switch Parking brake switch Passenger air bag cut-off switch Power outlet Power window master switch Rear differential lock ecu Remote control mirror switch Rheostat Right door lock control switch Right door lock motor, door unlock detection switch, door key lock/ unlock switch Shift lock control relay To ground g202 (diagram 2 of 2) Transmission control relay Unlock warning switch W/ 2-4 select switch W/ dbl cab W/ power window W/o 2-4 select switch W/o dbl cab W/o power window Washer level sensor Wiper & washer switch Wiper motor Ground Distribution Wiring Diagram (2 of 2) for Toyota Tacoma 2003 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Toyota Tacoma 2003: 63 (2.4l, 2.7) idle air control valve (2.4l, 2.7) noise filter (3.4l) igniter (behind dash, left (left end of dash) (left front fender) (left kick panel) (left side of (right kick panel) 2.4l, 2.7l 3.4l Abs actuator with ecu B17 B18 B19 B6 (left rear frame rail) Body ecu Brake fluid level warning switch C10 C13 C21 Center air bag sensor assembly Combination meter Data link connector Daytime running light relay (main) Eb (2.4l, 2.7l) (under data link connector 1) Eb (3.4l) (near the throttle body) Ec (right front fender) Ef (2.4l, 2.7l) (ignition coil bracket) Efi relay Engine compt) r/b 2 Engine control module Flasher relay From j/b 3 (left) (diagram 1 of 2) Fuel pump Fuel sender Heated oxygen sensor (bank 1 sensor 2) Heater relay High mounted stop light I1 (left kick panel) I13 (right side of dash) I9 (center of dash) Ignition coil & igniter J/b 3 (center) (behind center of dash) J/c 9, j/c 10 (left side of engine compt) J10 Left front turn signal light Left license plate light Left parking light Left rear combination light Of steering column) j/b 1 Power seat switch Pwr outlet relay Pwr relay Radio & player Rear differential lock detection switch Rear differential lock motor Right front turn signal light Right license plate light Right parking light Right rear combination light Side of dash) Starter relay
HEADLIGHTS Headlights Wiring Diagram, with DRL for Toyota Tacoma 2003 List of elements for Headlights Wiring Diagram, with DRL for Toyota Tacoma 2003: 62 A13 A16 A17 Body ecu Brake fluid level warning switch (on brake fluid reservoir) Brk C12 Chg- Combination meter Combination switch D j9 D11 D12 D19 Daytime running light relay (main) (behind dash, right of steering column) Daytime running light relay 4 (behind right side of dash) Dim Dimmer relay Dimmer switch Diode (drl) Drl Drl fuse 7.5a E j10 E3 (in engine compt harness, at left side of engine compt) Ea (2.4l & 2.7l: at left front fender) (3.4l: at right front fender) Ecu-b fuse 7.5a F16 F20 Flash Gauge fuse 10a H-lp Head Head (hi lh) fuse 10a Head (hi rh) fuse 10a Head (lo lh) fuse 10a Head (lo rh) fuse 10a Head relay High High beam indicator Hot at all times Hot in on or start Ie (at right side of dash) Ig (at left side of dash) Ind J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J10 Junction connector 1 (behind upper left side of dash) Junction connector 9 & 10 (on left side of engine compt, at r/b 2) L13 L14 Left headlight Light control switch Low Off Parking brake switch (on base of park brake lever) Pkb R/b 2 (on left side of engine compt) Red Right headlight Starting/ charging system Tail Headlights Wiring Diagram, without DRL for Toyota Tacoma 2003 List of elements for Headlights Wiring Diagram, without DRL for Toyota Tacoma 2003: 32 (at left side of dash) ig (at right side of dash) ie A16 A17 Battery Body ecu C12 Combination meter Combination switch Dimmer switch F16 F20 Flash Head Head relay High High beam indicator J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J10 Junction connector 9 9 & 10 (on left side of engine compartment, at r/b 2) L13 L14 Left head fuse 10a Left headlight Light control switch Low Off R/b 2 (on left side of engine compartment) Right head fuse 10a Right headlight Tail
HORN Horn Wiring Diagram for Toyota Tacoma 2003 List of elements for Horn Wiring Diagram for Toyota Tacoma 2003: 8 Body ecu Combination switch High horn Horn haz fuse 15a Horn switch Hot at all times J/b 1 (behind dash, left of steering column) Low horn
INSTRUMENT CLUSTER Clock Wiring Diagram for Toyota Tacoma 2003 List of elements for Clock Wiring Diagram for Toyota Tacoma 2003: 16 Acc fuse 15a C15 C16 Clock Dome fuse 15a F16 F19 G12 Hot at all times Hot in acc or on Hot w/ tail relay energized Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) R/b 2 (on left side of engine compt) Tail fuse 10a Instrument Cluster Wiring Diagram, with Tachometer for Toyota Tacoma 2003 List of elements for Instrument Cluster Wiring Diagram, with Tachometer for Toyota Tacoma 2003: 97 (2.4l & 2.7l: at left front fender) (3.0l: at right front fender) ea (2.4l & 2.7l: on right side of engine) (3.4l: on rear of engine) water temperature sender (behind dash, above steering column) j/b 3 (left) (on transmission) vehicle speed sensor (or red) (w/ drl) (w/o drl) 2.4l & 2.7l 3.4l 4wd ind A/t A/t oil temp ind A/t p ind A10 A11 A12 A13 A16 Abs ind Abs inverter Anti-lock brakes system B17 B18 B19 Brake fluid level warning switch (on brake fluid reservoir) Brake ind Bulb check relay C10 C11 C12 C13 C14 C16 Charge ind Combination meter Control circuit Cruise control system Cruise ind D j9 D10 D11 D12 D13 D14 D15 D16 D17 D19 D20 Daytime running light relay (main) (behind dash, right of steering column) Dome fuse 15a E j10 Eb (2.4l & 2.7l: under data link connector 1) (3.4l: near throttle body) Ect pwr ind Ef (at ignition coil bracket) Engine controls system Exterior lights system F10 F16 F20 Fuel gauge Fuel ind Fuel sender (in fuel tank) Gauge fuse 10a Headlights system High beam ind Hot at all times Hot in on or start Hot w/ tail realay energized Id (at left kick panel) Ig (at left side of dash) Ign fuse 7.5a Illum Interior lights system J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J/c 9 & 10 (on left side of engine compt, at r/b 2) Left turn ind Malfunction ind lamp O/d off ind Oil ind Oil pressure switch (2.4l & 2.7l: on lower right side of engine) (3.4l: on lower left front of engine) Parking brake switch (on base of park brake lever) R/b 2 (on left side of engine compt) Right turn ind Rr diff lock ind Seat belt ind Speedometer Srs ind Starting/charging system Tachometer Tail fuse 10a Transmissions system Warning system Washer ind Water temperature gauge Wiper/washer system Instrument Cluster Wiring Diagram, without Tachometer for Toyota Tacoma 2003 List of elements for Instrument Cluster Wiring Diagram, without Tachometer for Toyota Tacoma 2003: 93 (2.4l & 2.7l: on right side of engine) (3.4l: on rear of engine) water temperature sender (behind dash, above steering column) j/b 3 (left) (on transmission) vehicle speed sensor (or red) 2.4l & 2.7l 3.4l 4wd ind A/t A/t oil temp ind A/t p ind A10 A11 A12 A13 A16 Abs ind Abs inverter Anti-lock brakes system B17 B18 B19 Brake fluid level warning switch (on brake fluid reservoir) Brake ind Bulb check relay C10 C11 C12 C13 C14 C16 Charge ind Combination meter Cruise control system Cruise ind D10 D11 D12 D13 D14 D15 D16 D17 D19 D20 Daytime running light relay (main) (behind dash, right of steering column) Ea (2.4l & 2.7l: at left front fender) (3.0l: at right front fender) Eb (2.4l & 2.7l: under data link connector 1) (3.4l: near throttle body) Ect pwr ind Ef (at ignition coil bracket) Engine controls system Exterior lights system F10 F16 F20 Fuel gauge Fuel ind Fuel sender (in fuel tank) Gauge fuse 10a Headlights system High beam ind Hot in on or start Hot w/ tail relay energized Id (at left kick panel) Ig (at left side of dash) Ign fuse 7.5a Illum Interior lights system J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J/b 3 (left) (behind dash, above steering column) J/c 9 & 10 (on left side of engine compt, at r/b 2) J10 J9 d Left turn ind Malfunction ind O/d off ind Oil ind Oil pressure switch (2.4l & 2.7l: on lower right side of engine) (3.4l: on lower left front of engine) Parking brake switch (on base of parking brake lever) R/b 2 (on left side of engine compt) Right turn ind Seat belt ind Speedometer Srs ind Starting/charging system Tail fuse 10a Transmissions system W/ drl W/o drl Warning system Washer ind Water temperature gauge Wiper/washer system
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Toyota Tacoma 2003 List of elements for Courtesy Lamps Wiring Diagram for Toyota Tacoma 2003: 26 (except 3.4l) (3.4l) (in dash harness, at left kick panel) i2 i1 B1 (in body harness, at left "a" pillar) Body ecu Dome fuse 15a Door Double, extra cab Ecu-ig fuse 15a H10 Hot at all times Hot in on or start Interior light J/b 1 (behind dash, left of steering column) L10 L11 Left Left front door courtesy switch Left rear door courtesy switch (double cab) Off Personal light R/b 2 (on left side of engine compt) Regular cab Right Right front door courtesy switch Right rear door courtesy switch (double cab) W/ personal light Instrument Illumination Wiring Diagram for Toyota Tacoma 2003 List of elements for Instrument Illumination Wiring Diagram for Toyota Tacoma 2003: 53 (at left side of dash) ig (behind center of dash) j/b 3 (center) (behind dash, above steering column) j/b 3 (left) A/c control assembly A12 A16 A17 Alt fuse 120a Ashtray illumination Body ecu C11 C12 C13 C14 C16 C17 C18 C19 C21 Cigarette lighter illumination Electronically controlled transmission pattern select switch (a/t) Except double cab F13 F16 Glove box light H10 Hazard switch Head Hot at all times I10 I11 I12 I14 I15 I17 I18 J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) L15 Light control switch (combination switch) Meter illumination (combination meter) O/d main switch (shift lock control relay) (a/t) Off Passenger air bag manual on/off indicator R/b 2 (on left side of engine compt) Radio & player Rear differential lock switch Red Rheostat Tail Tail fuse 10a Tail relay
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 2) for Toyota Tacoma 2003 List of elements for Power Distribution Wiring Diagram (1 of 2) for Toyota Tacoma 2003: 59 (diagram 2 of 2) A/c dual pressure switch, a/c control assembly A/c fuse 10a Abs actuator w/ ecu Abs fuse 60a Alt fuse 120a Alt-s fuse 7.5a Am1 fuse 40a Am2 fuse 30a Battery Blower motor Body ecu, clock, radio & player, combination meter Combination meter, clock interior lights, exterior lights, engine control module, rheostat Compt) Data link connector Dimmer relay Dome fuse 15a Drl fuse 7.5a Drl relay 4 Ea (left Efi fuse 20a Efi relay, engine control module End of dash) From acc Front fender) Fuse (diagram 2 of 2) d Generator Head (hi lh) fuse 10a Head (hi rh) fuse 10a Head (lh) fuse 10a Head (lo lh) fuse 10a Head (lo rh) fuse 10a Head (rh) fuse 10a Head relay Heater fuse 50a Heater relay I12 Ie (right J/b fuse 50a J/c 11 (above glove box) J/c 9, j/c 10 (left side of engine compt) J10 d J9 a Left headlamp Obd fuse 7.5a Power outlets Pwr outlet fuse 15a Pwr outlet relay R/b 2 (left side of engine compt) Red Right headlamp Starter relay Switch (diagram 2 of 2) Tail fuse 10a Tail relay To ignition To j/b 1 W/ drl W/o drl Power Distribution Wiring Diagram (2 of 2) for Toyota Tacoma 2003 List of elements for Power Distribution Wiring Diagram (2 of 2) for Toyota Tacoma 2003: 63 2.4l, 2.7l 3.4l 4wd ecu (w/ 2-4 select), transmission control relay (w/ add), detection switch (w/ add), rear differential lock ecu 4wd fuse 20a Acc Acc fuse 15a Am1 Am2 Body ecu Cigarette lighter Clock Clutch start switch, park/ neutral position switch, clutch start cancel switch, engine control module Combination meter Cruise control clutch switch, o/d solenoid (2.4l), clutch start cancel switch, combination meter, vehicle speed sensor, daytime running lamp relay (main), park/neutral position switch, air vent mode control servo motor, air inlet control servo motor, a/c control assembly, rear differential lock switch, electronically controlled transmission pattern select switch (2.4l, 2.7l), backup light switch Cruise control ecu Drl relay (main), a/c control assembly Ecu-b fuse 7.5a Ecu-ig fuse 15a Efi relay (2.4l, 2.7l) Engine control module (3.4l) F10 F11 From am1 fuse (diagram 1 of 2) b From am2 fuse (diagram 1 of 2) a From r/b 2 (diagram 1 of 2) c G10 G11 G12 G13 Gauge fuse 10a Generator, heater relay Hazard switch Horn haz fuse 15a I12 I13 (right side of dash) Ie (right end of dash) Ig1 Ig2 Ign fuse 7.5a Igniter, injectors, ignition coils Ignition coils & igniters, noise filter, injectors Ignition switch J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) Lock O/d ecu (2.4l) Oulet relay (diagram 1 of 2) Power fuse 30a Power relay Power seat switch Radio & player Red Remote control mirror switch Shift lock control relay St1 Sta fuse 7.5a Start Stop fuse 10a Stop light switch To pwr Turn fuse 10a Wiper fuse 20a Wiper motor, washer motor, wiper & washer switch
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Toyota Tacoma 2003 List of elements for Power Door Locks Wiring Diagram for Toyota Tacoma 2003: 47 (3.4l) (except 3.4l) (in dash harness, at left side of dash) i3 (in dash harness, at right kick panel) i18 (in dash harness, at top left side of dash) i5 B11 B12 B13 B21 B22 Body ecu Dome fuse 15a E14 E15 E16 E17 E18 E19 Ecu-ig fuse 15a F16 F21 Hot at all times Hot in on or start I1 (in dash harness, at left kick panel) Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) Left door key lock & unlock switch Left door lock control switch (power window master switch) Left front door courtesy switch Left front door lock motor & door unlock detection switch Left rear door courtesy switch Left rear door lock motor (w/ double cab) Lock Power fuse 30a R/b 2 (on left side of engine compartment) Right door key lock & unlock switch Right door lock control switch Right front door courtesy switch Right front door lock motor & door unlock detection switch Right rear door courtesy switch Right rear door lock motor (w/ double cab) Unlock Unlock warning switch W/ double cab W/o double cab
POWER MIRRORS Power Mirrors Wiring Diagram for Toyota Tacoma 2003 List of elements for Power Mirrors Wiring Diagram for Toyota Tacoma 2003: 17 Acc fuse 15a Down G12 Hot in acc or on I20 (in dash harness, at left kick panel) Ie (at right side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Left Left remote control mirror Operation switch Red Remote control mirror switch Right Right remote control mirror Select switch
POWER SEATS Power Seats Wiring Diagram for Toyota Tacoma 2003 List of elements for Power Seats Wiring Diagram for Toyota Tacoma 2003: 7 Hot at all times Ig (at left side of dash) J/b 1 (behind dash, left of steering column) Lumbar support power seat motor Lumbar support power seat switch Power fuse 30a Red
POWER WINDOWS Power Windows Wiring Diagram for Toyota Tacoma 2003 List of elements for Power Windows Wiring Diagram for Toyota Tacoma 2003: 39 (in dash harness, at center of dash) (in dash harness, at right kick panel) B14 B15 B16 Body ecu Dome fuse 15a Double cab Down Ecu-ig fuse 7.5a Except double cab Hot at all times Hot in on or start I18 Ie (at right end of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) L11 Left front door courtesy switch Left front power window motor Left rear Left rear power window control switch (double cab) Left rear power window motor (double cab) Lock Normal Passenger Power fuse 30a Power window master switch Pwr relay R/b 2 (on left side of engine compt) Right front door courtesy switch Right front power window control switch Right front power window motor Right rear Right rear power window control switch (double cab) Right rear power window motor (double cab) Solid state Window lock switch
RADIO Radio Wiring Diagram for Toyota Tacoma 2003 List of elements for Radio Wiring Diagram for Toyota Tacoma 2003: 30 Acc Acc fuse 15a Dome fuse 15a Fl+ Fl- Fr- G10 Gnd Hot at all times Hot in on or acc Ih (at right kick panel) Ill Interior lights system J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) Left front door speaker Left rear speaker Left tweeter (6 speaker) Pnk Pr+ R/b 2 (on left side of engine compartment) Radio & player Red Right front door speaker Right rear speaker Right tweeter (6 speaker) Rl+ Rl- Rr+ Rr-
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Toyota Tacoma 2003 List of elements for Shift Interlock Wiring Diagram for Toyota Tacoma 2003: 24 A16 A20 Acc Acc fuse 15a Ecu-ig fuse 15a F10 G12 G17 G21 Hot at all times Hot in acc or on Hot in on or start I12 Ie (in engine harness, at front of engine) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) Key interlock solenoid Kls+ Shift lock control relay (below floor shift lever) Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp Unlock warning switch
STARTING/CHARGING Charging Wiring Diagram for Toyota Tacoma 2003 List of elements for Charging Wiring Diagram for Toyota Tacoma 2003: 21 Alt fuse 120a Alt-s fuse 7.5a Battery Battery ground C13 Charge warning light Chg- Combination meter Daytime running light relay (main) (behind dash, right of steering column) F10 Gauge fuse 10a Generator Hot in on or start Ign fuse 7.5a J/b 1 (behind dash, left of steering column) Junction connector (on left side of engine compt, at r/b 2) Nca R/b 2 (on left side of engine compt) Red W/ drl W/o drl Starting Wiring Diagram for Toyota Tacoma 2003 List of elements for Starting Wiring Diagram for Toyota Tacoma 2003: 49 (2.4l & 2.7l) (2.4l) (3.4l & 2.7l) (3.4l) engine control module (behind right side of dash) A/t A16 A20 Acc Alt fuse 120a Am1 fuse 40a Battery Battery ground Bulb check relay C12 Clutch start cancel switch (m/t) Clutch start switch (m/t) Combination meter D j9 D15 D19 E10 E20 E21 E22 Ea (2.4l, 2.7l: at left front fender) (3.4l: at right front fender) F16 F20 Gauge fuse 10a Hot in on or start Ie (at right side of dash) Ig (at left side of dash) Ignition switch J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) J10 Junction connector 9 & 10 (on left side of engine compartment, at r/b 2) M/t Nca Nsw Off P/ n Park/ neutral position switch (a/t) (on transmission) R/b 2 (on left side of engine compartment) Solid state Sta Sta fuse 7.5a Start Starter Starter relay
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram for Toyota Tacoma 2003 List of elements for Supplemental Restraints Wiring Diagram for Toyota Tacoma 2003: 61 (left end of dash) id (right end of dash) ih (right side of dash) ie (w/o double cab) passenger air bag manual on/off switch) +sl +sr -sl -sr A16 A18 Air bag squib (front passenger air bag assembly) (w/o double cab) Air bag squib (front passenger) air bag assembly Air bag squib (steering wheel pad) Buckle switch (in driver's seat belt buckle) C10 C12 C20 C21 C22 Center air bag sensor assembly (below center of dash) Combination meter D19 D20 Data link connector (dlc) 3 (partial) (below left center of dash) Ecu-ig fuse 15a F16 F20 G16 G17 Gauge fuse 10a H14 H15 H16 H17 H18 H19 Hot in on or start Ie (right side of dash) Ig1 Ig2 Ign fuse 7.5a J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/c 11 (above glove box) Lbe+ Left front air bag sensor (on left front of engine compartment, behind bumper) Left pretensioner (at base of left "b" pillar) Nca Passenger air bag manual on/off indicator (w/o double cab) Pl+ Pl- Pr+ Pr- Right front air bag sensor (on right front of engine compartment, behind bumper) Right pretensioner (at base of right "b" pillar) Sil Spiral cable Srs W/double cab W/o double cab
TRANSMISSION 4WD Wiring Diagram, with 2-4 Select Switch for Toyota Tacoma 2003 List of elements for 4WD Wiring Diagram, with 2-4 Select Switch for Toyota Tacoma 2003: 74 (dash harn, center of dash) (dash harn, right side of dash) 2-4 2-4 select motor (on transmission) 2-4 select switch 4wd 4wd ecu (below center of dash) 4wd fuse 20a 4wd ind A/t indicator switch A/t p ind Abs actuator w/ecu (right rear of engine compt) Add Add actuator (near right rear of engine) Add detection switch Add limit switch B17 B19 C10 C13 Combination meter D17 D18 D19 D20 Detection switch (transfer 4wd position) (on transmission) Detection switch (transfer l4 position) (on trans- mission) Detection switch (transfer neutral position) (on trans) Diode (a/t) (behind top left side of dash) Dl1 Dl2 Dm1 Dm2 E12 E13 Engine control module Exi Exi2 F12 F16 G17 G19 G20 Gauge fuse 10a Gnd H20 H22 Hot in on or start I12 I13 I14 I9 (w/drl) i14 (w/o drl) Id (left kick panel) Ie (right side of dash) Ig (left side of dash) Ind J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/c 13 (above glove box) Park/neutral position switch (on trans) Pnk Rear differential lock ecu (on upper left kick panel) Red Spd Speedometer Tfn Tl1 Tl2 Tm1 Tm2 Vehicle speed sensor (on transmission) W/ tach W/o tach 4WD Wiring Diagram, without 2-4 Select Switch for Toyota Tacoma 2003 List of elements for 4WD Wiring Diagram, without 2-4 Select Switch for Toyota Tacoma 2003: 49 (2.7l) (3.4l) (dash harn, right side of dash) i12 (dash harn, right side of dash) i14 (on upper left kick panel) rear differential lock ecu (right rear of eng compt) abs actuator w/ecu 2wd 4wd 4wd fuse 20a 4wd ind A/t indicator switch A/t p ind Add actuator (near right rear of engine) Add detection switch Add limit switch Add motor C10 C13 Combination meter D18 D19 D20 Detection switch (transfer 4wd position) (on transmission) Detection switch (transfer l4 position) (on transmission) Detection switch (transfer neutral position) (on transmission) Diode (a/t) (behind top left side of dash) E11 E12 Engine control module (behind right side of dash) Exi Exi2 Gauge fuse 10a Gnd H20 H22 Hot in on or start I13 I14 I9 (dash harn, center of dash) Ie (right side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/c 13 (above glove box) Park/neutral position switch (on transmission) Rel1 Rel2 Tfn Transmission control relay (on upper right kick panel) Rear Differential Lock Wiring Diagram for Toyota Tacoma 2003 List of elements for Rear Differential Lock Wiring Diagram for Toyota Tacoma 2003: 54 (dash harn, right side of dash) i12 (w/ 2-4 select switch) (w/o 2-4 select switch) 2.7l 3.4l 4wd 4wd ecu (w/ 2-4 select switch) (below center of dash) 4wd fuse 20a A/t A/t w/ abs A22 Abs actuator with ecu (w/ abs) (right rear of engine compt) C10 C13 Combination meter D11 D16 D19 Detection switch (transfer l4 position) (on transmission) Engine control module (behind right side of dash) Exi Exi2 F12 F16 Free G17 G18 Gauge fuse 10a Gnd H21 H22 Hot in on or start I12 Ie (right side of dash) Ig (left side of dash) J/b 1 (behind left side of dash) J/b 3 (center) (behind center of dash) J/b 3 (left) (above steering column) J/c 13 (above glove box) Limit switch Lock M/t M/t w/ abs Pnk Rear differential lock switch Rear differential lock detection switch Rear differential lock ecu (upper left kick panel) Rear differential lock indicator Rear differential lock motor Rel1 Rel2 Rlp Spd Speed
2.4L 2.4L, A/T Wiring Diagram for Toyota Tacoma 2003 List of elements for 2.4L, A/T Wiring Diagram for Toyota Tacoma 2003: 56 Batt Cruise control system D13 D17 D18 D19 D20 Data link connector 3 (below left center of dash) Ea (left front fender) Ecu-ig fuse 15a Ef (ignition coil bracket) Efi fuse 20a Efi relay (r/b 2) Engine control module (behind right side of dash) Engine controls Engine coolant temperature sensor (on rear of eng) F11 G14 G17 G22 Gauge fuse 10a Hot at all times Hot in on or start I12 I13 (dash harn, right side of dash) Idlo Ie (right side of dash) Ign fuse 7.5a Instrument cluster system J/b 1 (behind dash, left side of steering column) J/b 3 (left) (behind dash, above steering column) J/c 11 (above glove box) J/c 13 (above glove box) J/c 9, j/c 10 (left side of engine compt) J10 Nsw O/d ecu (below center of dash) O/d main switch O/d solenoid (on transmission) Od off Od1 Odlp Odms Park/neutral position switch (on transmission) R/b 2 (left side of engine compt) Sol Sp1 Speedo Sta Starting system Stop fuse 10a Stoplight switch (on bracket, above brake pedal) Stp Throttle position sensor (on throttle body) Thw Vta
2.7L 2.7L, A/T Wiring Diagram for Toyota Tacoma 2003 List of elements for 2.7L, A/T Wiring Diagram for Toyota Tacoma 2003: 68 (dash harn, right side of dash) i13 (r/b 2) (right side of dash) ie A/t oil temp sensor (on transmission) A/t p ind Batt Cruise control system D13 D18 D19 Data link connector 3 (below left center of dash) Ea (left front fender) Ect pwr Ef (ignition coil bracket) Efi fuse 20a Efi relay Electronic controlled transmission solenoids (on transmission) Electronically controlled transmission pattern select switch Engine control module (behind right side of dash) Engine controls Engine coolant temperature sensor (rear of eng) F11 G22 Gauge fuse 10a Hot at all times Hot in on or start I12 I13 I13 (dash harn, right side of dash) Idl0 Ign fuse 7.5a J/b 1 (behind dash, left of steering column) J/b 3 (center) (behind center of dash) J/b 3 (left) (behind dash, above steering column) J/c 11 (above glove box) J/c 9, j/c 10 (left side of engine compt) J10 No. 1 No. 2 No. 3 Nsw O/d main switch Od off Od1 Odlp Odms Oil temp Oil-w P ind Park/neutral position switch (on transmission) Pnk Pwr R/b 2 (left side of engine compt) Red Sp1 Sp2+ Sp2- Speedo Sta Starting system Stop fuse 15a Stoplight switch (on bracket, above brake pedal) Tfn Tho Throttle position sensor (on throttle body) Thw Vehicle speed sensor (for ect) (on transmission) Vta
3.4L 3.4L, A/T Wiring Diagram for Toyota Tacoma 2003 List of elements for 3.4L, A/T Wiring Diagram for Toyota Tacoma 2003: 70 (dash harn, right side of dash) (left side of engine compt) j/c 9, j/c 10 (near the throttle body) (right front fender) ea +bm A/t oil temperature sensor (on transmission) A/t p ind Batt (b+) D13 D18 D19 Data link connector 3 (below left center of dash) E1 (grd) E10 Ect pwr Ects fuse 15a Efi fuse 20a Efi relay (on r/b 2) Electronic controlled transmission solenoids (on transmission) Electronically controlled transmission pattern select switch Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor (left front of engine) F11 G17 G22 Gauge fuse 10a Hot at all times Hot in run or start I12 I13 Ig (left side of dash) Ign fuse 7.5a Igsw J/b 1 (behind dash, left of steering column) J/b 3 (behind dash, above steering column) J/c 11 (above glove box) J10 Mrel Nsw O/d main switch Od off Od2 Odms Oilw Park/neutral position switch (on transmission) Pnk Pwr R/b 2 (left side of engine compt) Red Slt Slt+ Slt- Sp1 Sp2+ Sp2- Speedo Sta Starting system Stop fuse 15a Stoplight switch (on bracket, above brake pedal) Stp Temp a/t oil Tfn Thoc Throttle position sensor (on throttle body) Thw Vehicle speed sensor (for ect) (on transmission) Vta Vta2
WARNING SYSTEMS Warning Systems Wiring Diagram for Toyota Tacoma 2003 List of elements for Warning Systems Wiring Diagram for Toyota Tacoma 2003: 33 (w/ tachometer) (w/o tachometer) A16 A18 Acc fuse 15a Body ecu C12 C13 Combination meter D16 D19 D20 Dome fuse 15a Ecu-ig fuse 15a F16 F21 G11 Gauge fuse 10a Hot at all times Hot in acc or on Hot in on or start Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) L11 L19 L20 Left buckle switch Left front door courtesy switch R/b 2 (on left side of engine compartment) Seat belt warning ind Unlock warning switch
WIPER/WASHER 2-Speed Wiper/Washer Wiring Diagram for Toyota Tacoma 2003 List of elements for 2-Speed Wiper/Washer Wiring Diagram for Toyota Tacoma 2003: 32 (at right side of dash) ie C10 C15 Combi- nation meter Combination switch D19 D20 F16 F18 G15 G17 Gauge fuse 10a High Hot in on or start I12 I16 Ie (at right side of dash) Ig (at left side of dash) J/b 1 (behind dash, J/b 3 (left) (behind dash, above steering column) Left of Low Mist Off Steering column) Wash Washer ind Washer level sensor (canada) (in washer fluid reservoir) Washer motor (in washer fluid reservoir) Wiper fuse 20a Wiper motor (on right side of firewall) Wiper/ washer switch Interval Wiper/Washer Wiring Diagram for Toyota Tacoma 2003 List of elements for Interval Wiper/Washer Wiring Diagram for Toyota Tacoma 2003: 30 (at right side of dash) ie C10 C15 Combi- nation meter Combination switch D19 D20 F18 G15 G17 Gauge fuse 10a High Hot in on or start I12 I16 Ie (at right side of dash) Ig (at left side of dash) Int J/b 1 (behind dash, left of steering column) J/b 3 (left) (behind dash, above steering column) Low Off Solid state Wash Washer ind Washer level sensor (canada) (in washer fluid reservoir) Washer motor (in washer fluid reservoir) Wiper fuse 20a Wiper motor (on right side of firewall) Wiper/ washer switch
