Diagram sections — 29 (81 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
2.4L 2.4L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for 2.4L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 74 (in dash harness, at right side of dash) (in dash harness, at right side of dash) i6 (in dash harness, behind center of dash) A/c control assembly (behind center of dash) A10 A11 A13 Acc Aif Air Air bag sensor assembly (below front of center console) Air inlet control servo motor (behind upper center of dash) Air mix control servo motor (behind center of dash) Air vent mode control servo motor (behind left center of dash) Amc Amh Aod Aof Blower control switch Blower motor (behind right side of dash) Blower resistor (behind right side of dash) Center j/b (behind upper center of dash) Clk Control panel Dim Dpd Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Evaporator temperature sensor (behind right side of dash) F13 Fusible link block (on left side of engine compartment) G10 Gateway ecu (behind right side of dash) Gnd Haz Heater fuse 10a Heater fuse 50a Heater relay (right of instrument panel j/b) Hot at all times Hot in on or acc Hot in on or start I11 I13 I14 Ia (at left kick panel) Ib (at right dash brace) Ic (at right kick panel) Ill+ Ill- Instrument panel j/b (behind left side of dash) Interior lights system J10 Junction connector 5 (left side of dash, behind instrument cluster) K13 Mpx+ Mpx- Mr/f Passenger side j/b (behind right side of dash) Pnk Radio 2 fuse 7.5a Red S30 S31 S5-1 Sg-1 Short connector (behind left side of dash) Ss-4 Stx Swd Telltale light assembly Test Tpo W/ navigation W/o navigation 2.4L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for 2.4L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 42 (2.4l: on left rear of engine) engine coolant temperature sensor (in engine compt harness, at left front of engine compt) (under left headlight) eg A/c magnetic clutch & lock sensor (on a/c comp- (resistor) A/c triple pressure switch (on right front of engine compartment) Acmg B10 Body ecu (behind right side of dash) C11 C12 Cds fuse 30a Center j/b (behind upper center of dash) Combination meter Condenser fan motor (behind radiator) Dual Ee (at intake side of cylinder block) Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Engine room r/b (on left side of engine compartment) Fan Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (on left side of engine compartment) Hot at all times J/c 2 (behind left headlight) J12 Junction connector 2 (behind left headlight) Junction connector 7 (behind right side of dash) Lck1 Mg clt relay Mpx+ Mpx- Mpx1 Mpx2 Passenger side j/b (behind right side of dash) Power window master switch with ecu (in driver's door) Pre Radiator fan motor (behind radiator) Rdi fuse 30a Single Thw
3.3L 3.3L, Automatic A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for 3.3L, Automatic A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 76 (in dash harness, at center of dash) (in dash harness, at right side of dash) i12 A/c ambient temperature sensor (on front center of grille) A/c control assembly (behind center of dash) A/c solar sensor (on upper left side of dash) A10 A11 A13 Acc Aif Air Air bag sensor assembly (below front of center console) Air inlet control servo motor (behind upper center of dash) Air mix control servo motor (behind center of dash) Air vent mode control servo motor (behind left center of dash) Amc Amh Aod Aof Blower motor (behind right side of dash) Blower motor controller Blw Center j/b (behind upper center of dash) Clk Control panel Dim Dpd Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Evaporator temperature sensor (behind right side of dash) F13 Fusible link block (on left side of engine compartment) G10 Gateway ecu (behind right side of dash) Gnd Haz Heater fuse 10a Heater fuse 50a Heater relay (right of instrument panel j/b) Hot at all times Hot in on or acc Hot in on or start I11 I14 Ia (at left kick panel) Ib (at right dash brace) Ic (at right kick panel) Ig+ Ill+ Ill- Instrument panel j/b (behind left side of dash) Interior lights system J12 Junction connector 5 (left side of dash, behind instrument cluster) K13 Mpx+ Mpx- Mr/f Passenger side j/b (behind right side of dash) Pnk Radio 2 fuse 7.5a Red Room temperature sensor (behind center of dash) S30 S31 S5-1 S5-3 Sg-1 Sg-3 Short connector (behind left side of dash) Stx Swd Telltale light assembly Tpo W/ navigation W/o navigation 3.3L, Automatic A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for 3.3L, Automatic A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 48 (behind left headlight) j/c 2 (in engine compt harness, at left front of engine compt) A/c magnetic clutch & lock sensor (on a/c comp- ressor) A/c triple pressure switch (on right front of engine compt) Acmg B10 Body ecu (behind right side of dash) C11 C12 Cds fuse 30a Combination meter Condenser fan motor (behind radiator) Diode (cooling fan) (behind left side of dash) Dual Ed (on top of engine) Eg (under left headlight) Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor (3.3l: on front center of engine) Engine room j/b (on left side of engine compartment) Engine room r/b (on left side of engine compartment) Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (on left side of engine compartment) Hot at all times Junction connector 2 (behind left headlight) Junction connector 4 (on right side of engine compt) Junction connector 7 (behind right side of dash) Lck1 Mg clt relay Mpx+ Mpx- Mpx1 Mpx2 Passenger side j/b (behind right side of dash) Power window master switch with ecu (in driver's door) Pre Radiator fan motor (behind radiator) Rdi fuse 30a S28 S29 Short connector (behind right side of dash) Single Tam Thw Water temperature switch 1 (at right front of engine compartment, behind grille) Water temperature switch 2 (on rear center of engine) 3.3L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for 3.3L, Manual A/C Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 74 (in dash harness, at center of dash) (in dash harness, at right side of dash) (in dash harness, at right side of dash) i6 A/c control assembly (behind center of dash) A10 A11 A13 Acc Aif Air Air inlet control servo motor (behind upper center of dash) Air mix control servo motor (behind center of dash) Air vent mode control servo motor (behind left center of dash) Airbag sensor assembly (below front of center console) Amc Amh Aod Aof Blower control switch Blower motor (behind right side of dash) Blower resistor (behind right side of dash) Center j/b (behind upper center of dash) Clk Control panel Dim Dpd Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Evaporator temperature sensor (behind right side of dash) F13 Fusible link block (on left side of engine compartment) G10 Gateway ecu (behind right side of dash) Gnd Haz Heater fuse 10a Heater fuse 50a Heater relay (right of instrument panel j/b) Hot at all times Hot in on or acc Hot in on or start I11 I13 I14 Ia (at left kick panel) Ib (at right dash brace) Ic (at right kick panel) Ill+ Ill- Instrument panel j/b (behind left side of dash) Interior lights system J10 Junction connector 5 (left side of dash, behind instrument cluster) K13 Mpx+ Mpx- Mr/f Passenger side j/b (behind right side of dash) Pnk Radio 2 fuse 7.5a Red S30 S31 S5-1 Sg-1 Short connector (behind left side of dash) Ss-4 Stx Swd Telltale light assembly Test Tpo W/ navigation W/o navigation 3.3L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for 3.3L, Manual A/C Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 47 (in engine compt harness, at left front of engine compt) A/c magnetic clutch & lock sensor (on a/c comp- ressor) A/c triple pressure switch (on right front of engine compartment) Acmg B10 Body ecu (behind right side of dash) C11 C12 Cds fuse 30a Center j/b (behind upper center of dash) Combination meter Condenser fan motor (behind radiator) Diode (cooling fan) (behind left side of dash) Dual Eb (at right front fender apron) Ed (on top of engine) Eg (under left headlight) Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor (3.0l: on front center of engine) Engine room j/b (on left side of engine compartment) Engine room r/b (on left side of engine compartment) Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (on left side of engine compartment) Hot at all times J/c 2 (behind left headlight) J12 Junction connector 2 (behind left headlight) Junction connector 4 (on right side of engine compt) Junction connector 7 (behind right side of dash) Lck1 Mg clt relay Mpx+ Mpx- Mpx1 Mpx2 Passenger side j/b (behind right side of dash) Power window master switch with ecu (in driver's door) Pre Radiator fan motor (behind radiator) Rdi fuse 30a Single Thw Water temperature switch 1 (at right front of engine compt, behind grille) Water temperature switch 2 (on rear center of engine)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 57 (above brake pedal) brake pedal load sensing switch (at right dash brace) ib (behind right side of dash) engine control module (under left headlight) eh +bs Abs 1 fuse 30a Abs 2 fuse 50a Abs cut relay Abs mtr relay Abs r/b (on left rear of engine compt) Brl Canh Canl Center j/b (behind upper center of dash) Computer data lines system Csw D/g Ea (at right front fender apron) Eng+ Eng- F13 Fl+ Fl- Fr+ Fr- Fsw+ Fusible link block (on left side of engine compt) Gnd1 Gnd2 Hot at all times Ig1 Init Junction connector 4 (on right side of engine compartment) Left front abs speed sensor (at left front wheel) Left rear abs speed sensor (on left rear wheel) Mrf Neo Parking brake switch (at base of parking brake pedal) Passenger side j/b (behind right side of dash) Pkb Pnk Pressure switch Red Right front abs speed sensor (at right front wheel) Right rear abs speed sensor (on right rear wheel) Rl+ Rl- Rr+ Rr- Skid control ecu with actuator (right front of engine compt) Sp1 Stp Trac off switch (2wd) Trc+ Trc- Vscw Wfse Anti-lock Brakes Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 50 A11 Abs ind B12 Batt Bb (at right center pillar) Bf (at right corner of vehicle) Brake ind Brake warning switch (on master cylinder assembly) C11 C12 Canh Canl Center j/b (behind upper center of dash) Combination meter Computer data lines system D10 D11 Dome fuse 10a Ecu-b fuse 7.5a Ecu-ig fuse 10a Engine room j/b (on left side of engine compt) Ess G10 Gnd Heater fuse 10a Hot at all times Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Ign fuse 10a Ind (2wd) Instrument panel j/b (behind left side of dash) J/c 19 (at rear of vehicle) Junction connector 16 (right kick panel) Junction connector 17 (behind left side of dash) Junction connector 6 (left side of dash, behind instrument cluster) K13 Passenger side j/b (behind right side of dash) Pnk Red Slip ind Speedometer Steering sensor (in steering column) Stop fuse 20a Stop light switch (above brake pedal) Tire air pressure ind Trac off Vsc ind Vsc warning buzzer Yaw rate sensor (on rear of vehicle)
ANTI-THEFT Forced Entry Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Forced Entry Wiring Diagram for Toyota Highlander Limited 2004: 45 (in dash harness, at right side of dash) i11 +b1 +b2 B12 Back door key lock & unlock switch Becu Body ecu (behind right side of dash) Center j/b (behind upper center of dash) Computer data lines system Cpub Dswh Ecu-b fuse 7.5a Ecu-ig fuse 10a Engine hood courtesy switch (on front center of engine compt) Engine room j/b (on left side of engine compt) F11 F13 G10 Gnd Hot at all times Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Ind Instrument panel j/b (behind left side of dash) Iout J/c 1 (behind left headlight) J/c 14 (on left rear of vehicle) J/c 17 (behind left side of dash) J/c 6 (left side of dash, behind instrument cluster) J11 Ksw Mpx1 Option connector 2 (behind upper right side of dash) Passenger side j/b (behind right side of dash) Pnk Power window master switch w/ ecu (in driver's door) Red S+b Security fuse 15a Sh- Theft deterrent ecu (behind right side of dash) Theft deterrent horn (on right side of engine compt) Theft deterrent indicator light Unlock warning switch (in steering column) Immobilizer Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Immobilizer Wiring Diagram for Toyota Highlander Limited 2004: 41 (behind left side of dash) j/c 17 (left "b" pillar) left front door courtesy switch (left side of dash, behind instrument cluster) j/c 6 A12 Agnd Center j/b (behind upper center of dash) Code Cty Data link connector (dlc) 3 (under left side of dash) Ecu-b fuse 7.5a Efii Efio Engine control module (behind right side of dash) Engine room j/b (on left side of engine compt) F11 F13 G10 Gnd Hot at all times Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Ign fuse 10a Imi Imo Ind Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J/c 6 (left side of dash, behind instrument cluster) K11 Ksw Passenger side j/b (behind right side of dash) Pnk Red Sil Theft deterrent indicator light Transponder key amplifier (in steering column) Transponder key computer (behind right side of dash) Txct Unlock warning switch (in steering column) Vc5
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 92 A10 Acc Act+ Act- Actd Anti-theft & door locks systems B10 B11 B12 Bcty Bdr1 Becu Body ecu (behind right side of dash) Bzr Center j/b (behind upper center of dash) Cltb Clte Clts D fr door fuse 25a D12 Dcty Dcyl Door lock fuse 25a Door locks system Drl Ecu-b fuse 7.5a Engine room j/b (on left side of engine compartment) Exterior lights system Exterior lights, headlights, interior lights & anti-theft systems F13 Ffgo Ffog Gnd1 Gnd2 H11 Haz Head Headlights & anti-theft systems Headlights system Horn Horns system Hot at all times Hot in acc or on Hot in on or start Hrly Ib (at right dash brace) Ic (at right kick panel) Ig1 fuse 7.5a Ile Instrument panel j/b (behind left side of dash) Interior & exterior lights systems Interior lights & door locks systems Interior lights system Interior lights, door locks & anti-theft systems J/c 6 (left side of dash, behind instrument cluster) K10 Ksw Left front door courtesy light Lswa Lswp Mpx1 Mpx2 Navigation system Obd2 P fr door fuse 20a Parking brake switch (at base of parking brake pedal) Passenger side j/b (behind right side of dash) Pbew Pcty Pcyl Pkb Pkl Pkul Pml Pmul Pnk Power windows system Prg Radio 2 fuse 7.5a Rcty Rda Red Right front door courtesy light Rld Rlu Rrd Rru Snow Tail Transmissions system Trly Unlock warning switch (in steering column) Body Control Modules Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 39 A/c control assembly (behind center of dash) A10 A11 A12 A17 Air bag sensor assembly (below front of center console) C11 C12 Center j/b (behind upper center of dash) Combination meter Data link connector (dlc) 3 (under left side of dash) E12 Engine control module (behind right side of dash) Gateway ecu (behind right side of dash) I8 (in dash harness, at right end of dash) Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J12 Mpd1 Mpd2 Mpx+ Mpx- Mpx1 Mpx2 Option connector 1 (behind left kick panel) Passenger side j/b (behind right side of dash) Pnk Power window master switch w/ ecu (in driver's door) Red S30 S31 Short connector (behind left side of dash) Sil Sliding roof control ecu (w/ moon roof) (on front of sliding roof) Theft deterrent ecu (behind right side of dash) W/ anti-theft system W/ navigation W/o anti-theft system W/o navigation
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Computer Data Lines Wiring Diagram for Toyota Highlander Limited 2004: 81 (2.4l) (3.0l) (at rear of vehicle) j/c 19 (at right kick panel) ic (at right rear corner of vehicle) bf (behind right side of dash) engine control module (behind right side of dash) theft deterrent ecu (behind upper center of dash) center j/b (on front of sliding roof) sliding roof control ecu A/c control assembly (behind center of dash) A10 A11 A12 A17 Air bag sensor assembly (below front of center console) B10 Bat Bb (at right center pillar) Body ecu (behind right side of dash) C11 C12 Canh Canl Combination meter D/g D10 Data link connector (dlc) 3 (under left side of dash) Dia E10 E12 Ecu-b fuse 7.5a Ecu-ig fuse 10a Ed (on top of engine) Ee (at intake side of cylinder block) Engine room j/b (on left side of engine compt) Eom Ess G10 Gateway ecu (behind right side of dash) Gnd Hot at all times Hot in on or start I8 (in dash harness, at right end of dash) Ic (at right kick panel) Ig1 Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J/c 17 (behind left side of dash) J/c 7 (behind right side of dash) J12 L11 Mpd1 Mpd2 Mpx+ Mpx- Mpx1 Mpx2 Multi-display Obd fuse 7.5a Obd2 Occupant classification ecu (below right front seat) Option connector 1 (behind left kick panel) Passenger side j/b (behind right side of dash) Pnk Power window master switch with ecu (in driver's door) Red S30 S31 Short connector s30 & s31 (behind left side of dash) Sil Skid control ecu with actuator (right front of engine compt) Steering sensor (in steering column) Tac Tach Transponder key computer (behind center of dash) W/ navigation system W/ theft deterrent system W/o navigation system W/o theft deterrent system Wfse Yaw rate sensor (on rear of vehicle)
COOLING FAN
2.4L 2.4L, Cooling Fan Wiring Diagram for Toyota Highlander Limited 2004 List of elements for 2.4L, Cooling Fan Wiring Diagram for Toyota Highlander Limited 2004: 24 (in engine compt harness, at left front of engine compt) (on front center of engine) engine coolant temperature sensor A/c triple pressure switch (on right front of engine compt) Cds fuse 30a Condenser fan motor (behind radiator) E9 (in engine compartment harness, at rear of engine) Eg (under left headlight) Engine control module (behind right side of dash) Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Fan Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (on left side of engine compt) Heater fuse 10a Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) Junction connector 2 (behind left headlight) Junction connector 5 (left side of dash, behind instrument cluster) Radiator fan motor (behind radiator) Rdi fuse 30a Thw
3.3L 3.3L, Cooling Fan Wiring Diagram for Toyota Highlander Limited 2004 List of elements for 3.3L, Cooling Fan Wiring Diagram for Toyota Highlander Limited 2004: 29 (in engine compt harness, at left front of engine compt) A/c triple pressure switch (on right front of engine compt) Acmg Cds fuse 30a Condenser fan motor (behind radiator) Diode (cooling fan) (behind left side of dash) E14 (in engine compt harness, at rear of engine) Eg (under left headlight) Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor (on front center of engine) Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Fan 1 relay Fan 2 relay Fan 3 relay Fusible link block (on left side of engine compt) Heater fuse 10a Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) Junction connector 2 (behind left headlight) Junction connector 4 (on right side of engine compartment) Junction connector 5 (left side of dash, behind instrument cluster) Radiator fan motor (behind radiator) Rdi fuse 30a Thw Water temperature switch 1 (at right front of engine compartment, behind grille) Water temperature switch 2 (on rear center of engine)
CRUISE CONTROL Cruise Control Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Cruise Control Wiring Diagram for Toyota Highlander Limited 2004: 95 (2.4l) (3.3l) (behind right side of dash) j/c 7 (behind upper center of dash) center j/b (in engine compartment harness, at rear of engine) e9 e14 (3.3l) (left side of transmission) a/t indicator switch (rear of left valve cover) +b2 +bm +res -set 3.3l Accel position sensor (above accelerator pedal) B12 Batt C11 C12 C16 Cancel Ccs Combination meter Combination switch Computer data lines system Cruise control switch Cruise ind Data link connector (dlc) 3 (under left side of dash) Dome fuse 10a E01 E02 E03 E04 E05 E1 pnk Ec (2.4l) (at left side of cylinder block) Ecc Ecu-b fuse 7.5a Ed (3.3l) (on top of engine) Ee (2.4l) (at intake side of cylinder block) Efi 1 fuse 20a Efi relay Eng+ Eng- Engine control module (behind right side of dash) Engine room j/b (on left side of engine compartment) Engine room r/b (on left side of engine compt) Epa Epa2 Etcs fuse 10a G10 Ge01 Heater fuse 10a Hot at all times Hot in on or start I6 (3.3l) I6 (in dash harness, at right side of dash) I7 (in dash harness, at right end of dash) Ib (at right dash brace) Ig1 fuse 7.5a Ign fuse 10a Igsw Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J/c 2 (behind left headlight) J/c 6 (left side of dash, behind instrument) cluster) J/c 7 (behind right side of dash) K13 Lcd M12 Me01 Mpx1 Mpx2 Mrel Nca Neo On/off Passenger side j/b (behind right side of dash) Pnk Red Skid control ecu with actuator (right front of engine compartment) Sp1 Spd Speedometer St1- Stop fuse 20a Stop light switch (above brake pedal) Stp Throttle control motor & sensor (2.4l: on side of transmission) (3.3l: on side of throttle body) Trc+ Trc- Vcp2 Vcpa Vpa Vpa2 Vta1 Vta2
DEFOGGERS Mirror Heater & Front Deicer Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Mirror Heater & Front Deicer Wiring Diagram for Toyota Highlander Limited 2004: 30 (in engine compt harness, at left rear of engine compt) e13 Center j/b (behind upper center of dash) D14 Deicer relay F13 Fdef Fr def fuse 20a Front wiper deicer & mirror heater switch (a/c control assembly) Front wiper deicer (on left rear of engine compt) Gnd Heater fuse 10a Hot at all times Hot in on or start Ia (at left kick panel) Ib (at right dash brace) Ic (at right kick panel) Ig1 fuse 7.5a Ill Instrument panel j/b (behind left side of dash) Interior lights system K13 L10 L12 Left mirror heater Left remote control mirror Passenger side j/b (behind right side of dash) Pnk R/b 1 (left of instrument panel j/b) Right mirror heater Right remote control mirror Rear Defogger Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Rear Defogger Wiring Diagram for Toyota Highlander Limited 2004: 20 A10 Engine room j/b (on left side of engine compt) Fusible link block (on left side of engine compt) Heater fuse 10a Hot at all times Hot in on or start Instrument panel j/b (behind left side of dash) J/c 14 (on left rear of vehicle) J/c 2 (behind left headlight) J/c 5 (left side of dash, behind instrument cluster) Noise filter (rear window defogger) (on left rear of vehicle) Of vehicle) Pnk R16 R17 Rdfg Rear defog relay Rear window defogger Rear window defogger switch (a/c control assembly) Rr def fuse 30a
ENGINE PERFORMANCE
2.4L 2.4L, Engine Performance Wiring Diagram (1 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (1 of 6) for Toyota Highlander Limited 2004: 67 (dash harn, behind right side of dash) (intake side of cyl block) (intake side of cyl block) ee (left side of cyl block) ef (on left front of engine) crankshaft position sensor (on rear center engine) camshaft position sensor (right front of engine) camshaft timing oil control valve +b2 A/c system A/t indicator switch (left side of trans) Accel position sensor (above accelerator pedal) Batt Charging circuit Computer data lines system Cooling fans system Els2 Eng+ Eng- Engine control module (ecm) (behind right side of dash) Eom Ep1 Ep2 Epa Epa2 G2+ Ge01 Hot in on & start Ig1 fuse 7.5a Igsw Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash) J/c 7 (behind right side of dash) J/c 7 a Lcki Me01 Mops Mpmp Mrel Nca Ne+ Ne- Neo Oc2+ Oc2- Odms Of dash) Oil pressure switch (left rear of engine) Passenger side j/b (behind right side of dash) Pnk Power steering oil pressure switch (front of engine) Ppmp Psw Red Rfc S27 Sil Skid control ecu w/ actuator (right front of eng compt) Tach Trc+ Trc- Vcp1 Vcp2 Vcpa Vpa Vpa1 Vpa2 Wfse 2.4L, Engine Performance Wiring Diagram (2 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (2 of 6) for Toyota Highlander Limited 2004: 29 (dash harn, right end of dash) (dash harn, right side of dash) Af+ Af- Air fuel ratio sensor (bank 1 sensor 1) (on exhaust manifold) Bb (right center pillar) Bc (left side of rear crossmember) Charcoal canister assembly Circuit opening relay Ee (intake side of cyl block) Efi 1 fuse 20a Efi relay Eh (under left headlight) Engine room j/b (on left side of engine compt) Fuel pump (in fuel tank) Heated oxygen sensor (bank 1 sensor 2) (on exhaust, after catalytic converter) Hot at all times Ht1b J/c J/c 19 (rear of vehicle) J/c 7 (right side of dash) Nca O1b- Ox1b Pnk R/b 1 (left of instrument panel j/b) Red V15 excd Voltage inverter (w/ rear seat entertainment system) (center of vehicle) 2.4L, Engine Performance Wiring Diagram (3 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (3 of 6) for Toyota Highlander Limited 2004: 51 (behind right side of dash) passenger side j/b (intake side of cyl block) (on transmission) park/neutral position switch A1a+ A1a- Center j/b (behind upper center of dash) Computer data lines system Counter gear speed sensor (left side of engine compt) Dsl E04 E7 (engine harn, at left side of engine) Ecu-b fuse 7.5a Efi 2 fuse 10a Eknk Engine control module (ecm) (behind right side of dash) Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) G10 Ha1a Heater fuse 10a Hot at all times Hot in on & start Ht1b Ign fuse 10a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash) K13 Knk1 Knk2 Knock sensor (right side of engine) L11 Nc+ Nc- Nca Nt+ Nt- Ox1b P/n Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Stop fuse 20a Stoplight switch (above brake pedal) Th0 Turbine speed sensor (on side of trans- mission) 2.4L, Engine Performance Wiring Diagram (4 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (4 of 6) for Toyota Highlander Limited 2004: 26 A/t oil temp ind Anti-lock brakes system B12 C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system Dsl Ect snow ind Electronically controlled transmission solenoid (in transmission) Ib (at right dash brace) Lcd Mil O/d off Pnk Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Speedometer Tachometer Tho 2.4L, Engine Performance Wiring Diagram (5 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (5 of 6) for Toyota Highlander Limited 2004: 28 (eng harn, (eng harn, rear of engine) (in eng harn, front of eng) (in eng harn, top of eng) e8 (left rear of engine compt) mass airflow meter (rear of engine) noise filter Center j/b (behind upper center of dash) D11 Dome fuse 10a E2g Ef (left side of cyl block) Engine coolant temperature sensor (left rear of eng) Engine room j/b (on left side of engine compt) Hot at all times Hot in on & start Ig2 fuse 15a Ignition coil & igniter 1 Ignition coil & igniter 2 Ignition coil & igniter 3 Ignition coil & igniter 4 Instrument panel j/b (behind left side of dash) Passenger side j/b (behind right side of dash) Pnk Rear of engine) Rear of engine) e9 Red Tha Vsv (evap) (left rear of engine compt) 2.4L, Engine Performance Wiring Diagram (6 of 6) for Toyota Highlander Limited 2004 List of elements for 2.4L, Engine Performance Wiring Diagram (6 of 6) for Toyota Highlander Limited 2004: 63 (dash harn, right side of dash) (eng harn, rear of engine) (in eng harn, top of eng) (left side of cyl block) ef (on side of throttle body) throttle control motor & sensor (right side of dash) s/c 28, 29 +bm A/c system Acmg Ccs Center j/b (behind upper center of dash) Computer data lines system Cooling fans system Cruise control system E02 E03 E2g Efii Efio Engine control module (ecm) (behind right side of dash) Engine room r/b (on left side of engine compt) Etcs fuse 10a F13 Fan Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Hot at all times Ib (at right dash brace) Igf1 Igt1 Igt2 Igt3 Igt4 Imi Imo Inj 1 Inj 2 Inj 3 Inj 4 Instrument panel j/b (behind left side of dash) M12 Mpx1 Mpx2 Nsw Pnk Prg Red S28 S29 Spd St1 Sta Stp Tam Tha Thw Transmission control switch Transponder key computer (behind right side of dash) Vpmp Vta1 Vta2
3.3L 3.3L, Engine Performance Wiring Diagram (1 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (1 of 6) for Toyota Highlander Limited 2004: 79 (behind left side of dash) (dash harn, behind right side of dash) (left rear of engine) camshaft timing oil control valve (left) (on left front of engine) crankshaft position sensor (on left rear of engine left vvt sensor (on right rear of engine right vvt sensor (rear of left valve cover) ec (right rear of engine) camshaft timing oil control valve (right) (top of engine) (top of engine) ed +b2 A/c system A/t indicator switch (left side of trans) Accel position sensor (above accelerator pedal) Acm Batt Charging circuit Computer data lines system Cooling fans system E03 Els2 Eng+ Eng- Engine control module (ecm) (behind right side of dash) Eom Ep1 Ep2 Epa Epa2 Ge01 Gnd Hot in on & start Ig1 fuse 7.5a Igsw Instrument panel j/b (behind left side of dash) J/c 17 J/c 6 (left side of dash) J/c 7 (behind right side of dash) J/c 7 a Lcki Me01 Mops Mrel Nca Ne+ Ne- Neo Oc1+ Oc1- Oc2+ Oc2- Odms Of dash) Oil pressure switch (left front of engine) Passenger side j/b (behind right side of dash) Pnk Power steering oil pressure switch (front of engine) Psw Ptnk Red Rfc S27 Sil Skid control ecu w/ actuator (right front of eng compt) Tach Trc+ Trc- Vapor pressure sensor (rear of vehicle) Vcc Vcp1 Vcp2 Vcpa Vpa Vpa1 Vpa2 Vsv (acm) (left front of engine compt) Vv1+ Vv2+ Wfse 3.3L, Engine Performance Wiring Diagram (2 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (2 of 6) for Toyota Highlander Limited 2004: 31 (dash harn, right end of dash) (eng harn, (rear of engine) (left front of eng compt) A/f relay Af+ Af- Air fuel ratio sensor (bank 1 sensor 1) (left exhaust manifold) Air fuel ratio sensor (bank 2 sensor 1) (right exhaust manifold) Bc (left side of rear crossmember) Circuit opening relay E14 E16 Ed (top of eng) Efi 1 fuse 20a Efi relay Eh (under left headlight) Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Fuel pump (in fuel tank) Heated oxygen sensor (bank 1 sensor 2) (on exhaust, after catalytic converter) Heated oxygen sensor (bank 2 sensor 2) (on exhaust, after catalytic converter) Hot at all times Ht1b J/c 2 J/c 7 (right side of dash) Nca Ox1b Pnk R/b 1 (left of instrument panel j/b) V15 excd Voltage inverter (w/ rear seat entertainment system) (center of vehicle) 3.3L, Engine Performance Wiring Diagram (3 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (3 of 6) for Toyota Highlander Limited 2004: 63 (behind right side of dash) passenger side j/b (on left side of transmission) park/neutral position switch (top of eng) A/f fuse 25a A1a+ A1a- A2a+ A2a- Center j/b (behind upper center of dash) Computer data lines system Counter gear speed sensor (left side of engine compt) Dsl E05 E06 E7 (engine harn, at rear of engine) Ecu-b fuse 7.5a Efi 2 fuse 10a Ekn2 Eknk Engine control module (ecm) (behind right side of dash) Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) G10 Ha1a Ha2a Heater fuse 10a Hot at all times Hot in on & start Ht1b Ht2b Ign fuse 10a Inj 6 Instrument panel j/b (behind left side of dash) J/c 3 (right side of engine compt) K13 Knk1 Knk2 Knock sensor 1 (right center of engine) Knock sensor 2 (left center of engine) L11 Nc+ Nc- Nca Nt+ Nt- Ox1b Ox2b P/n Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Sl3+ Sl3- Slt+ Slt- Stop fuse 20a Stoplight switch (above brake pedal) Th01 Turbine speed sensor (on side of trans- mission) 3.3L, Engine Performance Wiring Diagram (4 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (4 of 6) for Toyota Highlander Limited 2004: 28 A/t oil temp ind Anti-lock brakes system B12 C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system Dsl Ect snow ind Electronically controlled transmission solenoid (in transmission) Ib (at right dash brace) Lcd Mil O/d off Pnk Red Sl1+ Sl1- Sl2+ Sl2- Sl3+ Sl3- Slt+ Slt- Speedometer Tachometer Tho 3.3L, Engine Performance Wiring Diagram (5 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (5 of 6) for Toyota Highlander Limited 2004: 32 (dash harn, right side of dash) (front center of engine) noise filter (in eng harn, (in eng harn, front of eng) (in eng harn, front of eng) e6 (left rear of engine compt) mass airflow meter Center j/b (behind upper center of dash) D11 Dome fuse 10a E14 E2g Ec (rear of left valve cover) Engine coolant temperature sensor (front center of eng) Engine room j/b (on left side of engine compt) Hot at all times Hot in on & start Ig2 fuse 15a Ignition coil & igniter 1 Ignition coil & igniter 2 Ignition coil & igniter 3 Ignition coil & igniter 4 Ignition coil & igniter 5 Ignition coil & igniter 6 Instrument panel j/b (behind left side of dash) Passenger side j/b (behind right side of dash) Pnk Rear of engine) Rear of engine) e14 Red Tha Vsv (canister closed valve) (rear of vehicle) Vsv (evap) (top center of eng) 3.3L, Engine Performance Wiring Diagram (6 of 6) for Toyota Highlander Limited 2004 List of elements for 3.3L, Engine Performance Wiring Diagram (6 of 6) for Toyota Highlander Limited 2004: 67 (dash harn, right side of dash) (in eng harn, front of eng) (on throttle body) throttle control motor & sensor (right side of dash) s/c 28, 29 (top of engine) ed +bm A/c system Acis Acmg Ccs Ccv Center j/b (behind upper center of dash) Computer data lines system Cruise control system E01 E02 E2g Efii Efio Engine control module (ecm) (behind right side of dash) Engine room r/b (on left side of engine compt) Etcs fuse 10a F13 Fuel inj 1 Fuel inj 2 Fuel inj 3 Fuel inj 4 Fuel inj 5 Fuel inj 6 Hot at all times Ib (at right dash brace) Igf1 Igt1 Igt2 Igt3 Igt4 Igt5 Igt6 Imi Imo Inj 1 Inj 2 Inj 3 Inj 4 Inj 5 Instrument panel j/b (behind left side of dash) M12 Mpx1 Mpx2 Nsw Pnk Prg Red S28 S29 Spd St1 Sta Stp Tam Tha Thw Transmission control switch & transmission shift main switch Transponder key computer (behind right side of dash) Vsv (acis 2) (rear center of engine) Vta1 Vta2
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Back-up Lamps Wiring Diagram for Toyota Highlander Limited 2004: 13 Back-up light switch (on left side of transmission) Bc (at left side of rear crossmember) Hot in on or start Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) Junction connector 12 (on left rear of vehicle) Left back-up light Left rear combination light Passenger side j/b (behind right side of dash) Pnk Red Right back-up light Right rear combination light Exterior Lamps Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Exterior Lamps Wiring Diagram for Toyota Highlander Limited 2004: 61 (on left rear of vehicle) junction connector 13 Alt fuse 140a B10 B11 B12 Bc (at left side of rear crossmember) Body ecu (behind right side of dash) C10 C11 C13 Center j/b (behind upper center of dash) Combi- nation switch Combination meter Engine room j/b (on left side of engine compt) F13 Fusible link block (on left side of engine compt) G10 Haz Hazard fuse 15a Hazard switch (a/c control assembly) Head High mounted stop light Hot at all times Hot in on or start Ia (at left kick panel) Ib (at right dash brace) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 20 (near left kick panel) Junction connector (on left rear of vehicle) Junction connector 1 (behind left headlight) Junction connector 12 (on left rear of vehicle) Junction connector 14 (on left rear of vehicle) Junction connector 3 (on right side of engine compt) Left Left front park/ turn light Left rear combin- ation light Left rear side marker light License plate light Light control switch (part of combination switch) M13 Off Park Passenger side j/b (behind right side of dash) Pnk Red Right Right front park/ turn light Right rear combin- ation light Right rear side marker light Stop Stop fuse 20a Stoplight switch (above brake pedal) Tail Tail fuse 10a Taillight relay Trly Turn Turn signal flasher (right of instrument panel j/b) Turn signal ind lights Turn signal switch Trailer Tow Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Trailer Tow Wiring Diagram for Toyota Highlander Limited 2004: 36 B9 (in body harness, at left rear of vehicle) Bc (at left side of rear crossmember) Body ecu (behind right side of dash) C10 Center j/b (behind upper center of dash) D14 Engine room j/b (on left side of engine compt) G10 Gnd Haz Hazard fuse 15a Hazard switch (a/c control assembly) Hot at all times Hot in on or start Ia (at left kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 20 (near left kick panel) Junction connector 10 (on left rear of vehicle) Junction connector 12 (on left rear of vehicle) Junction connector 13 (on left rear of vehicle) Junction connector 20 (near left kick panel) Lt/s Passenger side j/b (behind right side of dash) Red Rt/s Stop fuse 20a Stoplight switch (above brake pedal) Stp Tail Tail fuse 10a Towing converter (rear of vehicle) Towing fuse 20a Trailer hitch Turn signal flasher (right of instrument panel j/b) Turn signal switch (part of comb- ination switch)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004: 54 (on left side of engine compt) engine room j/b (on left side of engine compt) engine room r/b (on right front of engine compt) engine room r/b 3 (w/ drl) (w/o drl) 2.4l A/c magnetic clutch & lock sensor A/c triple pressure switch A/f relay Air fuel ratio sensor (bank 1 sensor 1) shield Brake warning switch Camshaft position sensor shield Combination switch Crankshaft position sensor shield Data link connector Drl 3 relay Drl 4 relay E11 (in engine compt harness, at left rear of engine compt) E12 (in engine compt harness, at left rear of engine compartment) E9 (in engine compartment harness, at rear of engine) Ee (at intake side of cylinder block) Ef (at left side of cylinder block) Efi relay Engine control module Engine hood courtesy switch Fan 2 relay Heated oxygen sensor (bank 1 sensor 2) shield I6 (in dash harness, at right side of dash) I8 (in dash harness, at right end of dash) Ignition coil & igniter Inverter relay J/c 1 (behind left headlight) J/c 2 (behind left headlight) J/c 3 (on right side of engine compt) J/c 4 (on right side of engine compt) J/c 7 (behind right side of dash) Knock sensor shield Left front fog light Left front parking light Left front turn signal & parking light Left headlight (low beam) Nca Radiator fan motor Rear defog relay Red Right front fog light Right front parking light Right front turn signal & parking light Right headlight (low beam) Skid control ecu with actuator Starter relay W/ drl Washer level sensor Water temperature switch 1 Ground Distribution Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004: 60 3.3l A/c magnetic clutch & lock sensor A17 Acc relay Air bag sensor assembly Air fuel ratio sensor (bank 1 sensor 1) shield Air fuel ratio sensor (bank 2 sensor 1) shield Bb (at right center pillar) Bf (at right rear corner of vehicle) Blower control switch Blower motor control C13 Charcoal canister assembly Combination switch Crankshaft position sensor shield D14 Data link connector E6 (in engine compt harness, front of engine) Ec (rear of left valve cover) Ed (on top of engine) Engine control module Front passenger's seat control switch Front wiper deicer Front wiper motor Heated oxygen sensor (bank 1 sensor 2) shield Heated oxygen sensor (bank 2 sensor 2) shield I6 (in dash harness, at right side of dash) I8 (in dash harness, at right end of dash) Ia (at left kick panel) Ignition coil & igniter Instrument panel j/b (behind left side of dash) J/c 18 (at rear of vehicle) J/c 19 (at rear of vehicle) J/c 23 & 24 (below right front seat) J/c 7 (behind right side of dash) J23 J24 Knock sensor 1 shield Knock sensor 2 shield Left vvt sensor shield Nca Occupant classification ecu R29 R31 Rear heater blower motor Rear heater blower switch Rear heater relay Red Right rear door lock motor & door unlock detection switch Right rear power window switch Right seat entertainment ecu Right seat heater Right vvt sensor shield S23 Stereo power amplifier To passenger side j/b (diagram 3 of 4) W/ power seat W/o power seat Wireless door lock ecu Yaw rate sensor Ground Distribution Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004: 89 (left of instrument panel j/b) (w/ manual a/c) 2wd A/c control assembly A10 B1 (in body harness, at left "a" pillar) B12 B2 (in body harness, inside left front door) B4 (in body harness, inside right front door) Blower resistor Body ecu Brake pedal load sensing switch C11 C13 C14 Center j/b (behind upper center of dash) Centre j/b (behind upper center of dash) Cigarette lighter Combination meter Data link connector Door lock control switch E10 E11 Electronically controlled transmission pattern select switch Engine control module F10 F11 F12 F13 From center j/b (diagram 3 of 3) From instrument panel j/b (diagram 2 of 4) Front power outlet Front wiper deicer & mirror heater switch Front/rear wiper & washer switch Fuel sender G10 Garage door opener & left vanity light Gateway ecu Glove box light H10 H11 Heater relay Ib (at right dash brace) Ic (at right kick panel) Interior light J/c 13 (on left rear of vehicle) J10 J11 J16 Key interlock solenoid L10 Left remote control mirror Left seat heater switch Main switch Multi- display Navigation ecu Option connector Overhead j/b Passenger side j/b (behind right side of dash) Power window master switch with ecu Pressure switch R/b 1 Radio & player Red Remote control mirror switch Right front door lock motor, door unlock detection switch & door key lock & unlock switch Right front power window switch Right remote control mirror Right seat heater switch Right vanity light Seat heater relay Shift lock ecu Sliding roof control ecu Steering sensor Tell tale light assembly Theft deterrent ecu Theft deterrent indicator light To center j/b (diagram 3 of 3) Trac off switch Transmission control switch, transmission shift main switch & indicator light wire sub assembly Transponder key computer Turn signal flasher Turn signal switch Unlock warning switch W/ 6 speaker system W/ 8 speaker system W/ moon roof W/o moon roof Wireless door lock buzzer Ground Distribution Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004: 30 B9 (in body harness, at left rear of vehicle) Ba (at left center pillar) Back door key lock & unlock switch Back door lock motor & door unlock detection switch Bc (at left side of rear crossmember) Driver's seat control switch Driver's seat lumber support control Fuel pump High mounted stop- light J/c 12 (on left rear of vehicle) J/c 14 (on left rear of vehicle) J/c 21 & 22 (below driver's seat) J21 J22 Left rear combination light Left rear door lock motor & door unlock detection switch Left rear power window switch Left rear side marker light Left seat heater License plate light R16 Rear interior light Rear interior light switch Rear power outlet Rear window defogger Right rear combination light Right rear side marker light Towing converter Trailer hitch Voltage inverter
HEADLIGHTS Headlights Wiring Diagram, with DRL for Toyota Highlander Limited 2004 List of elements for Headlights Wiring Diagram, with DRL for Toyota Highlander Limited 2004: 89 (behind left head- light) (in engine compt harness, at left rear of engine compt) e10 (in engine compt harness, at right side of engine compt) e15 (on right front of engine compt) engine room r/b 3 (on right side of engine compt) A10 A13 Acc Alt fuse 140a Auto Automatic light control sensor (on upper left side of dash) B10 B11 B12 Becu Body ecu (behind right side of dash) C11 C12 Center j/b (behind upper center of dash) Cltb Clte Clts Combination meter Combination switch Dcty Dimmer switch Drl Drl 2 relay Drl 3 relay Drl 4 relay Drl fuse 7.5a E10 E11 E12 Eb (at right front fender apron) Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Ffgo Ffog Flash Fog light relay Foglight switch Fr fog fuse 20a Fusible link block (on left side of engine compt) G10 Gnd1 H11 Harness, at left rear of engine compt) Head Headlamp relay High High beam indicator Hot at all times Hot in on or acc Hot in on or start Hrly Ia (at left kick panel) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 1 J/c 3 K10 Left front door courtesy switch (left "b" pillar) Left front fog light Left high beam headlight Left low beam head- light Left lower head lp fuse 15a Left upper head lp fuse 10a Light control switch Low Main fuse 40a Off Parking brake switch (at base of parking brake pedal) Passenger side j/b (behind right side of dash) Pkb Pnk Radio 2 fuse 7.5a Red Right front fog light Right high beam headlight Right low beam head- light Right lower head lp fuse 15a Right upper head lp fuse 10a Tail Tail fuse 10a Tail light relay Trly Headlights Wiring Diagram, without DRL for Toyota Highlander Limited 2004 List of elements for Headlights Wiring Diagram, without DRL for Toyota Highlander Limited 2004: 69 (in dash harness, at top left side of dash) i3 (in engine compt harness, at left rear of engine compt) e4 A10 A13 Acc Alt fuse 140a B10 B11 B12 Becu Body ecu (behind right side of dash) C11 C12 Center j/b (behind upper center of dash) Combination meter Combination switch Dcty Dimmer switch E15 (in engine compt harness, of engine compt) Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Ffgo Ffog Flash Fog light relay Foglight switch Fr fog fuse 20a Fusible link block (on left side of engine compt) G10 Gnd1 H11 Head Head lp left lower fuse 15a Head lp left upper fuse 10a Head lp right lower fuse 15a Head lp right upper fuse 10a Headlamp relay High High beam indicator Hot at all times Hot in on or acc Hot in on or start Hrly Ia (at left kick panel) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 1 (behind left head- light) Junction connector 3 (on right side of engine compt) K10 Left front door courtesy switch (left "b" pillar) Left front fog light Left high beam head- light Left low beam head- light Light control switch Low Main fuse 40a Off Passenger side j/b (behind right side of dash) Radio 2 fuse 7.5a Red Right front fog light Right high beam head- light Right low beam head- light Tail Tail fuse 10a Tail light relay Trly
HORN Horn Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Horn Wiring Diagram for Toyota Highlander Limited 2004: 14 B12 Body ecu (behind right side of dash) C16 Combination switch Engine room j/b (on left side of engine compartment) Horn Horn fuse 10a Horn relay Horn switch Hot at all times I1 (at left end of dash) Left horn (front of vehicle) Pnk Right horn (front of vehicle)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Instrument Cluster Wiring Diagram for Toyota Highlander Limited 2004: 99 (3.3l) (3.3l: on left front of engine) (behind upper center of dash) center j/b (in fuel tank) fuel sender (on left rear of vehicle) j/c 13 2.4l 3.3l A/t oil temp ind A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 Abs ind Air bag ind Anti-lock brakes system B10 B11 B12 B13 B14 B15 B16 Beam ind Brake ind Brake warning switch (on master cylinder assembly) Buzzer C11 C12 Center j/b (behind upper center of dash) Charge ind Combination meter Computer data lines system Cruise ind D11 Dome fuse 10a Door ind Driver's seat belt ind E10 Ect snow ind Ecu-b fuse 7.5a Engine control module (behind right side of dash) Engine controls system Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Exterior lights system F13 Fuel gauge Fuel ind G10 Head lp rh lwr 15a Headlights system Heater fuse 10a Hot at all times Hot in on or start Hot w/ headlamp relay energized Ib (at right dash brace) Ign fuse 10a Instrument panel j/b (behind left side of dash) Interior lights system J/c 13 (on left rear of vehicle) J/c 4 (on right side of engine compt) J/c 6 (left side of dash, behind instrument cluster) K12 K13 Lcd Left turn ind Maint reqd ind (usa) Malfunction ind lamp Mops Mpx2 Multi- display Navigation ecu (below driver seat) O/d off ind Oil pressure ind Oil pressure switch (2.4l: on left rear of engine) Passenger side j/b (behind right side of dash) Pnk Red Rheostat Right turn ind Slip ind Spd Speedometer Tachometer Tire air pressure ind Trac off ind Vsc ind Washer level ind Water temp gauge Wiper/washer system
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Courtesy Lamps Wiring Diagram for Toyota Highlander Limited 2004: 76 (at right dash brace) ib +b1 A10 Acc B1 (in body harness, at left "a" pillar) B11 B12 B6 (in body harness, at top of red Bcty Becu Body ecu (behind right side of dash) C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system Cty D12 D13 D14 Dcty Dcyl Diode (rear interior light) (in roof, near rear hatch) Dome fuse 10a Door Door d fr fuse 25a Door ind Door p fr fuse 20a Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) F13 G10 Gnd Gnd1 Gnd2 H11 Heater fuse 10a Hot at all times Hot in on or acc Hot in on or start Ic (at right kick panel) Ig1 fuse 7.5a Ignition key cylinder illum- ination Ile Instrument panel j/b (behind left side of dash) Interior light J/c 13 (on left rear of vehicle) J/c 14 (on left rear of vehicle) K10 K13 Left "a" pillar) b1 Left front door courtesy light Left front door courtesy switch (left "b" pillar) Left rear door courtesy switch (on left "c" pillar) Left vanity light Liftgate) Light Mpx2 Off Over- head j/b Passenger side j/b (behind right side of dash) Pcty Pcyl Pnk Radio 2 fuse 7.5a Rcty Rear interior light Rear interior light switch Red Right front door courtesy Right front door courtesy switch (right "b" pillar) Right rear door courtesy switch (right "c" pillar) Right vanity light Tran- sponder key amplifier (ignition key cylinder illumi- nation) W/ engine immobilizer W/o engine immobilizer Instrument Illumination Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Instrument Illumination Wiring Diagram for Toyota Highlander Limited 2004: 57 (6 speaker) (8 speaker) (at left kick panel) ia (behind upper center of dash) center j/b (in dash harness, at right side of dash) i2 A/c control assembly (w/o navigation system) A11 A12 Alt fuse 140a Ashtray illumination B10 B12 Bb (at right center pillar) Bf (at right rear corner of vehicle) Body ecu (behind right side of dash) C11 C13 C16 Center j/b (behind upper center of dash) Cigarette lighter illumination Combination meter Combination switch Combination switch (8 speaker) D11 Dome fuse 10a E10 Electronically controlled transmission pattern select switch Engine room j/b (on left side of engine compt) F13 Fusible link block (on left side of engine compt) Glove box light Gmd H10 Head Hot at all times Ib (at right dash brace) Indicator light wire sub assembly Instrument panel j/b (behind left side of dash) J/c 19 (at rear of vehicle) Left seat heater switch (w/ seat heater system) Light control switch Main switch Multi- display (w/ navigation system) Off Panel fuse 7.5a Passenger side j/b (behind right side of dash) R23 Radio & player Radio & player (8 speaker) Rear heater blower switch (w/ rear heater system) Rear heater main switch (w/ rear heater system) Red Rheostat Right seat heater switch (w/ seat heater system) Tail Taillight relay Trly
NAVIGATION Navigation Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for Navigation Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 56 A/t indicator switch (left side of transmission) A10 A13 Acc Aui+ Aui- Auo+ Auo- Batt Center j/b (behind upper center of dash) Computer data lines system D11 Dome fuse 10a Engine room j/b (on left side of engine compt) Entertainment ecu F13 Fl+ Fl- Gateway ecu (behind right side of dash) Gnd Gtx+ Gtx- Hot at all times Hot in acc or on Hot in on or start I10 Ib (at right dash brace) Ig1 fuse 7.5a Instrument panel j/b (behind left end of dash) K10 K13 Left front door speaker Left tweeter Mpd1 Mpd2 Navigation ecu (below driver's seat) Nca Nts1 Passenger side j/b (behind right side of dash) Pnk R22 R29 Rad 2 fuse 7.5a Radio & player Rear seat sg3 Red Sgn1 Spd Stereo power amplifier (in luggage compt) Sync Tx+ Tx- Tx1+ Tx1- Tx3+ Tx3- Navigation Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for Navigation Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 49 (behind upper center of dash) (right kick panel) j/c 16 (under left side of dash) data link connector (dlc) 3 +b1 Acc B10 B12 Body ecu C11 C12 Center j/b (behind upper center of dash) Computer data lines system Crt fuse 7.5a D11 Ecu-b fuse 7.5a Ecu-ig fuse 10a Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) G10 Gnd1 H12 Haz Heater fuse 10a Hot at all times Hot in on or start Ill Instrument panel j/b (behind left side of dash) Interior lights system J/c 17 (behind left side of dash) K12 K13 Multi-display Nca Ntsc Pbew Pkb Pnk Red Sgd1 Sgnd Sp1 Spd Sync Tx+ Tx- Tx1+ Tx1- Tx3+ Tx3-
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004 List of elements for Power Distribution Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004: 65 A/f fuse 25a A/f relay Abs 1 fuse 30a Abs 2 fuse 50a Air conditioning system Air conditioning system & cooling fans system Alt fuse 140a Am1 fuse 40a Am2 fuse 30a Anti-lock brakes system Anti-lock brakes system, body computer system, cruise control system, engine controls system, exterior lights system, shift interlock system & transmissions system B11 Battery Body computer system, interior lights system, power windows system & door locks system Cds fuse 30a Coil Computer data lines system Contact Crt fuse 7.5a D fr door fuse 25a D rr door fuse 20a D12 D13 Defogger system E10 E15 Engine controls system & cruise control system Engine room r/b (on left side of engine compt) Etcs fuse 10a Exterior lights system Fog light relay Fr def fuse 20a Fr fog fuse 20a From s/roof fuse d (diagram 1 of 4) Fusible link block (on left side of engine compt) G11 Generator Htr fuse 50a Instrument panel j/b (behind left side of dash) Interior lights system Interior lights system & power windows system Nca Obd fuse 7.5a P fr door fuse 20a P rr door fuse 20a Panel fuse 7.5a Power fuse 30a Power tops system Power windows system Rdi fuse 30a Red Rr def fuse 30a Rr htr fuse 15a S/roof fuse 20a Seat htr fuse 15a Seats system Sound systems & navigation system Starter Stop fuse 20a Tail fuse 10a Taillight relay To ignition switch (diagram 3 of 4) To main fuse (diagram 2 of 4) To power fuse (diagram 1 of 4) To power outlet1 fuse (diagram 4 of 4) Power Distribution Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004 List of elements for Power Distribution Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004: 49 (in engine compt harness, at left rear of engine compt) e10 Ac1 Ac2 Alt-s fuse 7.5a Anti-theft system Anti-theft system, body computer system & door locks system Center j/b (behind upper center of dash) Coil Contact Dome fuse 10a Door lock fuse 25a Drl 2 relay Ecu-b fuse 7.5a Efi 1 fuse 20a Efi relay Engine control module (behind right side of dash) Engine controls system Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Engine room r/b 3 (on right front of engine compt) Excd Exterior lights system F12 F13 From center j/b (diagram 3 of 4) From fusible link block (diagram 1 of 4) From main fuse g (diagram 2 of 4) Garage door opener, instrument cluster system, interior lights system, body computer system, door locks system, warning system, anti-theft system & navigation system Hazard fuse 15a Headlamp relay Horn fuse 10a Horn relay Inverter relay Junction connector j12 (on left rear of vehicle) Junction connector j2 (behind left headlight) Main fuse 40a Main switch Power outlet Power outlet2 fuse 20a Rad 1 fuse 25a Red Security fuse 15a Short pin Sound systems Starting/ charging system To short pin (diagram 2 of 4) Towing fuse 20a Voltage inverter (center of vehicle) W/ rear seat entertainment system Power Distribution Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004 List of elements for Power Distribution Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004: 51 A10 Acc Air conditioning system, cooling fans system & defogger system Am1 Am2 Anti-lock brakes system Anti-theft system, shift interlock system & navigation system Center j/b (behind upper center of dash) Cruise control system, exterior lights system & transmissions system D10 Defogger system Door locks system & power windows system Ecu-ig fuse 10a Engine controls system Engine room r/b (on left side of engine compt) Exterior lights system From am1 fuse (diagram 1 of 4) From am2 fuse (diagram 1 of 4) From wiper fuse (diagram 3 of 4) Headlights system, interior lights system, warning system, power windows system, door locks system & anti-theft system Heater fuse 10a Ig1 Ig1 fuse 7.5a Ig2 Ig2 fuse 15a Ign fuse 10a Ignition switch Instrument panel j/b (behind left side of dash) K10 K13 Lock Mirrors system & power tops system Navigation system Off On off Red Rr wip fuse 15a Seats system St1 St2 Start Starter fuse 7.5a Starter relay Starting/ charging system Starting/ charging system & engine controls system To ig1 fuse (diagram 3 of 4) To main switch (diagram 2 of 4) To radio 2 fuse (diagram 4 of 4) Washer fuse 20a Wiper fuse 25a Wiper/ washer system Power Distribution Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004 List of elements for Power Distribution Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004: 22 Acc relay Air conditioning system & sound systems Bc (left side of rear crossmember) Center j/b (behind upper center of dash) Cig fuse 15a Cigarette lighter D14 F13 From ignition switch (diagram 3 of 4) From instrument panel j/b (diagram 1 of 4) Front power outlet Headlights system, interior lights system, body computer system, warning system, power windows system, door locks system, anti-theft system, shift interlock system, mirrors system & navigation system Ia (at left kick panel) Ib (at right dash brace) Ib (right instrument panel brace) Instrument panel j/b (behind left side of dash) Junction connector j12 (on left rear of vehicle) Pnk Power outlet1 fuse 15a Rad 2 fuse 7.5a Rear power outlet Sound systems
POWER DOOR LOCKS Power Door Locks Wiring Diagram, with Keyless Entry (1 of 2) for Toyota Highlander Limited 2004 List of elements for Power Door Locks Wiring Diagram, with Keyless Entry (1 of 2) for Toyota Highlander Limited 2004: 40 Ba (at left center pillar) Bb (at right center pillar) Bdr Computer data lines system Cpub Door lock control switch Gnd H11 Hot at all times Hot in acc or on Hot in on or start Ia (at left kick panel) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 13 (on left rear of vehicle) Junction connector 6 (left side of dash, behind instrument cluster) K10 Kul Left front door courtesy switch (left "b" pillar) Left front door lock motor, door unlock detection switch & door key lock & unlock switch (in left front door) Left rear door courtesy switch (on left "c" pillar) Left rear door lock motor & door unlock detection switch (in left rear door) Lssr Lsw Lswe Mpx1 Mpx2 P fr door fuse 20a Passenger side j/b (behind right side of dash) Pnk Power window master switch w/ ecu (in driver's door) Radio 2 fuse 7.5a Red Right front door courtesy switch (right "b" pillar) Right rear door courtesy switch (right "c" pillar) Right rear door lock motor & door unlock detection switch (in right rear door) Sig Unlock warning switch (in steering column) Wireless door lock buzzer (on left rear of engine compt) Power Door Locks Wiring Diagram, with Keyless Entry (2 of 2) for Toyota Highlander Limited 2004 List of elements for Power Door Locks Wiring Diagram, with Keyless Entry (2 of 2) for Toyota Highlander Limited 2004: 59 (at right rear corner of vehicle) bf A10 Acc Act+ Act- Act- back door lock motor & door unlock detection switch (in back door) Actd B10 B11 B12 Bcty Bdr1 Becu Body ecu (behind right side of dash) Bzr Center j/b (behind upper center of dash) Computer data lines system D12 D13 Dcty Dome fuse 10a Door lock fuse 25a Door unlock detection switch & door key lock & unlock switch (in right front door) Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) Exterior lights system G10 Gnd1 Haz Hot at all times Ia (at left kick panel) Instrument panel j/b (behind left side of dash) Interior lights system Junction connector 10 (on left rear of vehicle) Junction connector 12 (on left rear of vehicle) Junction connector 14 (on left rear of vehicle) Junction connector 18 (at rear of vehicle) Junction connector 19 (at rear of vehicle) Junction connector 5 (left side of dash, behind instrument cluster) Ksw Lssr Lswa Lswp Mpx1 Mpx2 Obd2 Passenger side j/b (behind right side of dash) Pcty Pkl Pkul Pml Pmul Prg Rcty Rda Rear interior light switch Red Right front door lock motor, Wireless door lock ecu (on right side of luggage compt) Power Door Locks Wiring Diagram, without Keyless Entry (1 of 2) for Toyota Highlander Limited 2004 List of elements for Power Door Locks Wiring Diagram, without Keyless Entry (1 of 2) for Toyota Highlander Limited 2004: 43 (at left kick panel) ia (behind right side of dash) passenger side j/b Ba (at left center pillar) Back door key lock & unlock switch Bb (at right center pillar) Bdr Cpub Door lock control switch Gnd H11 Hot at all times Hot in acc or on Hot in on or start Ia (at left kick panel) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) Junction connector (on left rear of vehicle) Junction connector 14 (on left rear of vehicle) Junction connector 6 (left side of dash, behind instrument cluster) K10 Kul Left front door courtesy switch (left "b" pillar) Left front door lock motor, door unlock detection switch & door key lock & unlock switch (in left front door) Left rear door courtesy switch (on left "c" pillar) Left rear door lock motor & door unlock detection switch (in left rear door) Lssr Lsw Lswe Mpx1 Mpx2 Option connector 1 (w/o anti-theft) (behind left kick panel) P fr door fuse 20a Passenger side j/b (behind right side of dash) Pnk Power window master control switch w/ ecu (in driver's door) Radio 2 fuse 7.5a Red Right front door courtesy switch (right "b" pillar) Right rear door courtesy switch (right "c" pillar) Right rear door lock motor & door unlock detection switch (in right rear door) Sig Unlock warning switch (in steering column) Power Door Locks Wiring Diagram, without Keyless Entry (2 of 2) for Toyota Highlander Limited 2004 List of elements for Power Door Locks Wiring Diagram, without Keyless Entry (2 of 2) for Toyota Highlander Limited 2004: 47 (w/o anti-theft) A10 Acc Act+ Act- Act- back door lock motor & door unlock detection switch (in back door) Actd B10 B11 B12 Bcty Bdr1 Becu Body ecu (behind right side of dash) Center j/b (behind upper center of dash) Computer data lines system Dcty Door lock fuse 25a Door unlock detection switch & door key lock & unlock switch (in right front door) Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) G10 Gnd1 Hot at all times Ia (at left kick panel) Instrument panel j/b (behind left side of dash) Junction connector 10 (on left rear of vehicle) Junction connector 12 (on left rear of vehicle) Junction connector 14 (on left rear of vehicle) Junction connector 5 (left side of dash, behind instrument cluster) Ksw Lssr Lswa Lswp Mpx1 Mpx2 Obd2 Passenger side j/b (behind right side of dash) Pcty Pkl Pkul Pml Pmul Rcty Rear interior light switch Red Right front door lock motor,
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Electrochromic Mirror Wiring Diagram for Toyota Highlander Limited 2004: 12 D14 Gnd Gnd5 Hot in on or start Ia (at left kick panel) Ic (at right kick panel) Ig1 Ig1 fuse 7.5a Inner mirror Instrument panel j/b (behind left side of dash) Overhead j/b (front of roof panel) Passenger side j/b (behind right side of dash) Power Mirrors Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Power Mirrors Wiring Diagram for Toyota Highlander Limited 2004: 21 Center j/b (behind upper center of dash) Defogger system Down E11 F13 Hot in acc or on Ib (at right dash brace) Instrument panel j/b (behind left side of dash) Left Left remote control mirror Left/ up Operation switch Passenger side j/b (behind right side of dash) Pnk Radio 2 fuse 7.5a Red Remote control mirror switch Right Right remote control mirror Right/ down Select switch
POWER SEATS Driver Power Seat Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Driver Power Seat Wiring Diagram for Toyota Highlander Limited 2004: 24 Ba (at left center pillar) Down Driver's power seat control switch Front Front tilt G11 Hot at all times Instrument panel j/b (behind left side of dash) J21 J22 Junction connector 21 & 22 (below driver's seat) Pnk Power fuse 30a Power seat control switch (driver's seat lumbar support control) Power seat motor (driver's seat lifter control) (in driver's seat) Power seat motor (driver's seat lumbar support control) (below driver's seat) Power seat motor (driver's seat reclining control) (below driver's seat) Power seat motor (driver's seat slide control) (in driver's seat) Power seat motor (driver's seat tilt control) (in driver's seat) Rear Rear lifter Reclining Red c Slide Heated Seats Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Heated Seats Wiring Diagram for Toyota Highlander Limited 2004: 31 (at left center pillar) ba (at right center pillar) bb (in dash harness, at top right side of dash) Center j/b (behind upper center of dash) F13 Hot at all times Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) Interior lights system J21 J22 J23 J24 Junction connector 21 & 22 (below driver's seat) Junction connector 23 & 24 (below right front seat) Left seat heater (in driver's seat) Left seat heater switch Passenger side j/b (behind right side of dash) Pnk b R/b 1 (left of instrument panel j/b) Red Red b Right seat heater (in right front seat) Right seat heater switch Seat heater relay Seat htr fuse 15a W/ power seat W/o power seat Passenger Power Seat Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Passenger Power Seat Wiring Diagram for Toyota Highlander Limited 2004: 17 Bb (at right center pillar) D13 Front Front passenger's power seat control switch Hot at all times Instrument panel j/b (behind left side of dash) J/c 23 & 24 (below right front seat) J23 J24 J24 a Pnk Power fuse 30a Power seat motor (front passenger's seat reclining control) (in right front seat) Power seat motor (front passenger's seat slide control) (in right front seat) Rear Reclining Slide
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Power Top/Sunroof Wiring Diagram for Toyota Highlander Limited 2004: 30 +b1 Computer data lines system Cty D14 Down Dwn Ecu-b fuse 7.5a Ecub Engine room j/b (on left side of engine compt) G10 Gnd Hot at all times Hot in on or start Ia (at left kick panel) Ic (at right kick panel) Ig1 fuse 7.5a Ig3 Instrument panel j/b (behind left side of dash) Interior lights system J/c 17 (behind left side of dash) Ls1 Ls2 Moon roof motor Mpx1 Overhead j/b (front of roof panel) Passenger side j/b (behind right side of dash) Pnk Red S/roof fuse 20a Sliding roof control ecu (on front of sliding roof)
POWER WINDOWS Power Windows Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Power Windows Wiring Diagram for Toyota Highlander Limited 2004: 66 A10 Acc B10 B11 B12 Ba (at left center pillar) Bb (at right center pillar) Bdr Becu Body ecu (behind right side of dash) Center j/b (behind upper center of dash) Computer data lines system Cpub D fr door fuse 25a D rr door fuse 20a D12 Ecu-b fuse 7.5a Engine room j/b (on left side of engine compt) F13 G10 Gnd Gnd1 Gnd2 H11 Hot at all times Hot in acc or on Hot in on or start I10 I11 Ib (at right dash brace) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) K10 Kul L10 Left front door key lock & unlock switch (in left front door) Left front power window motor (in left front door) Left rear power window motor (in left rear door) Left rear power window switch Limit switch Lmt Lswe Mpx1 Mpx2 P fr door fuse 20a P rr door fuse 20a Passenger side j/b (behind right side of dash) Pct Pls Pnk Power window master switch with ecu (in driver's door) Pulse sensor Pws Radio 2 fuse 7.5a Red Right front power window motor (in right front door) Right front power window switch Right rear power window motor (in right rear door) Right rear power window switch Rld Rlu Rrd Rru Sgnd Sig
RADIO 6-Speaker System Wiring Diagram for Toyota Highlander Limited 2004 List of elements for 6-Speaker System Wiring Diagram for Toyota Highlander Limited 2004: 33 (in left rear of vehicle) rear antenna amplifier A13 Acc+b Bu+b Center j/b (behind upper center of dash) Engine room j/b (on left side of engine compt) Fl+ Fl- Fr+ Fr- Gnd Hot at all times Hot in acc or on Ib (at right dash brace) Ill Instrument panel j/b (behind left side of dash) Interior lights system Left front door speaker Left rear door speaker Left tweeter Passenger side j/b (behind right side of dash) Pnk Radio & player Radio 1 fuse 25a Radio 2 fuse 7.5a Red Right front door speaker Right rear door speaker Right tweeter Rl+ Rl- Rr+ Rr- 8-Speaker System Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004 List of elements for 8-Speaker System Wiring Diagram (1 of 2) for Toyota Highlander Limited 2004: 78 (at right rear corner of vehicle) bf (in left rear of vehicle) rear antenna amplifier A13 Acc Amp+ Ant+ Au1 Au2 Aui+ Aui- Auo+ Auo- Bb (at right center pillar) Beep C16 Center j/b (behind upper center of dash) Combination switch Eau Engine room j/b (on left side of engine compt) Fl+ Fl- Fr+ Fr- Front antenna amplifier (behind center of dash) Gmd Gnd Hot at all times Hot in acc or on Ib (at right dash brace) Ill Instrument panel j/b (behind left side of dash) Interior lights system J/c 18 (at rear of vehicle) J/c 19 (at rear of vehicle) Left front door speaker Left rear door speaker Left tweeter Mode Mute Navigation ecu (w/ navigation) (below driver's seat) Nca Passenger side j/b (behind right side of dash) Pnk R22 R23 Radio & player Radio 1 fuse 25a Radio 2 fuse 7.5a Red Right front door speaker Right rear door speaker Right tweeter Rl+ Rl- Rmu Rr+ Rr- Rsl+ Rsl- Rsr+ Rsr- S22 S23 Seek+ Seek- Sgnd Sld Sld1 Stereo component amplifier Sw1 Sw2 Tx+ Tx- Tx1+ Tx1- Volume+ Volume- W/o navigation 8-Speaker System Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004 List of elements for 8-Speaker System Wiring Diagram (2 of 2) for Toyota Highlander Limited 2004: 82 (at right rear corner of vehicle) bf (auxl) (auxr) (nts4) (sg6) (sg7) (sgn5) (tx+) (tx-) (w/ rear seat entertainment) +b1 +b2 Acc Acc2 Al+ Al- Ar+ Ar- Auxl Auxr Crt fuse 7.5a Engine room r/b (on left side of engine compt) Gaux Gnd Gnd1 Hot at all times Hp1l Hp1r Hp2l Hp2r Hpl+ Hpl- Hpr+ Hpr- J/c 17 (behind left side of dash) J/c 18 (at rear of vehicle) Lmut Multi-display Mute Nca Nts1 Nts2 Ntsc Pnk R-l+ R-l- R-r+ R-r- R29 R30 R31 Rear seat entertainment display Rear seat entertainment ecu (rear of vehicle) Red Rmut Seld Sg1 Sg2 Sg3 Sg4 Sg5 Sg6 Sg9 Sgd1 Sgn1 Sgn2 Sgnd Sld Sld1 Syn2 Sync Tx+ Tx- Tx2+ Tx2- Tx3+ Tx3- Vg2 Video terminal Vr2 W/ rear seat entertainment W/o rear seat entertainment
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Shift Interlock Wiring Diagram for Toyota Highlander Limited 2004: 25 Acc Center j/b (behind upper center of dash) Ecu-ig fuse 10a F13 Hot at all times Hot in acc or on Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Instrument panel j/b (behind left side of dash) Key interlock solenoid (in steering column) Kls+ Nca Passenger side j/b (behind right side of dash) Pnk Radio 2 fuse 7.5a Red Shift lock control switch Shift lock ecu (at base of shifter lever) Shift lock solenoid Sls+ Sls- Stop fuse 20a Stoplight switch (above brake pedal) Stp
STARTING/CHARGING Charging Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Charging Wiring Diagram for Toyota Highlander Limited 2004: 23 Alt fuse 140a Alt-s fuse 7.5a Battery Battery ground C11 C12 Center j/b (behind upper center of dash) Charge ind Combination meter Computer data lines system Ecu-ig fuse 10a Engine control module (behind right side of dash) Engine room j/b (on left side of engine compt) Fusible link block (on left side of engine compt) Generator Heater fuse 10a Hot in on or start Instrument panel j/b (behind left side of dash) K13 Nca Pnk Red Starting circuit Starting Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Starting Wiring Diagram for Toyota Highlander Limited 2004: 28 Acc Alt fuse 140a Am1 Am1 fuse 40a Am2 Am2 fuse 30a Battery Battery ground E7 (3.0l: in engine compt harness, at rear of engine) (2.4l: in engine compt harness, at left side of engine compt) Engine control module (behind right side of dash) Engine room r/b (on left side of engine compt) Fusible link block (on left side of engine compt) Ignition switch Instrument panel j/b (behind left side of dash) J/c 2 (behind left headlight) Lock Nca Nsw Off P/n Park/neutral position switch (2.4l: on transmission) (3.0l: on left side of transmission) St1 St2 Sta Start Starter Starter fuse 7.5a Starter relay
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram, with Side Airbag (1 of 2) for Toyota Highlander Limited 2004 List of elements for Supplemental Restraints Wiring Diagram, with Side Airbag (1 of 2) for Toyota Highlander Limited 2004: 81 (front (steering wheel pad) +sl +sr -sl -sr A16 A17 A18 Air bag sensor assembly (below front of center console) Computer data lines system Csl+ Csl- Csr+ Csr- D14 D2+ D2- Escl Escr Esl Esr Fsr+ Fsr- Hot in on or start Ia (at left kick panel) Icl+ Icl- Icr+ Icr- Ig2 Ign fuse 10a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash, behind instrument cluster) Lbe+ Lbe- Left airbag squib Left buckle switch/seat Left curtain shield airbag squib Left front airbag sensor Left front side airbag sensor Left pretensioner Left rear side airbag sensor Left side airbag squib Lsp+ Lsp- Mpx1 Mpx2 P-ab P2+ P2- Paon Passenger airbag assembly) Passenger side j/b (behind right side of dash) Pl+ Pl- Pnk Position airbag sensor Pr+ Pr- Red Right airbag squib Right curtain shield airbag squib Right front airbag sensor Right front side airbag sensor Right pretensioner Right rear side airbag sensor Right side airbag squib Sfl+ Sfl- Sfr+ Sfr- Sil Ssl+ Ssl- Ssr+ Ssr- Vucl Vucr Vupl Vupr Supplemental Restraints Wiring Diagram, with Side Airbag (2 of 2) for Toyota Highlander Limited 2004 List of elements for Supplemental Restraints Wiring Diagram, with Side Airbag (2 of 2) for Toyota Highlander Limited 2004: 58 (at right dash brace A10 A12 Airbag indicator Airbag off Airbag on B12 Bf (right rear corner of vehicle) Bgnd Bsw C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system Data link connector 3 (under left side of dash) Dia E11 Ecu-b fuse 7.5a Engine room j/b (left side of engine compt) F10 F13 Front passenger's buckle switch Fsr+ Fsr- G10 Gnd Heater fuse 10a Hot at all times Hot in on or start Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J/c 17 (behind left side of dash) J/c 18 (at rear of vehicle) K10 K13 Left front occupant classification sensor Left rear occupant classification sensor Occupant classification ecu (below right front seat) Passenger side j/b (behind right side of dash) Pnk Red Right front occupant classification sensor Right rear occupant classification sensor Sgd1 Sgd2 Sgd3 Sgd4 Sig1 Sig2 Sig3 Sig4 Svc1 Svc2 Svc3 Svc4 Telltale light assembly Supplemental Restraints Wiring Diagram, without Side Airbag (1 of 2) for Toyota Highlander Limited 2004 List of elements for Supplemental Restraints Wiring Diagram, without Side Airbag (1 of 2) for Toyota Highlander Limited 2004: 46 (front (steering wheel pad) left airbag squib +sl +sr -sl -sr A16 A17 A18 Air bag sensor assembly (below front of center console) Computer data lines system D14 D2+ D2- Fsr+ Fsr- Hot in on or start Ia (at left kick panel) Ig2 Ign fuse 10a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash, behind instrument cluster) Lbe+ Lbe- Left buckle switch/ seat position airbag sensor Left front airbag sensor Left pretensioner Lsp+ Lsp- Mpx1 Mpx2 P-ab P2+ P2- Paon Passenger airbag assembly) right airbag squib Passenger side j/b (behind right side of dash) Pl+ Pl- Pnk Pr+ Pr- Red Right front airbag sensor Right pretensioner Sil Supplemental Restraints Wiring Diagram, without Side Airbag (2 of 2) for Toyota Highlander Limited 2004 List of elements for Supplemental Restraints Wiring Diagram, without Side Airbag (2 of 2) for Toyota Highlander Limited 2004: 58 (at right dash brace) A10 A12 Airbag indicator Airbag off Airbag on B12 Bf (right rear corner of vehicle) Bgnd Bsw C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system Data link connector 3 (under left side of dash) Dia E11 Ecu-b fuse 7.5a Engine room j/b (left side of engine compt) F10 F13 Front passenger's buckle switch Fsr+ Fsr- G10 Gnd Heater fuse 10a Hot at all times Hot in on or start Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 16 (right kick panel) J/c 17 (behind left side of dash) J/c 18 (at rear of vehicle) K10 K13 Left front occupant classification sensor Left rear occupant classification sensor Occupant classification ecu (below right front seat) Passenger side j/b (behind right side of dash) Pnk Red Right front occupant classification sensor Right rear occupant classification sensor Sgd1 Sgd2 Sgd3 Sgd4 Sig1 Sig2 Sig3 Sig4 Svc1 Svc2 Svc3 Svc4 Telltale light assembly
TRANSMISSION
2.4L 2.4L, A/T Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004 List of elements for 2.4L, A/T Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004: 40 +b2 A/t indicator switch (left side of trans) Accel position sensor (above accelerator pedal) Batt Computer data lines system Ee (intake side of cyl block) Ef (left side of cyl block) Efi 1 fuse 20a Efi main relay Eh (under left headlight) Engine control module (ecm) (behind right side of dash) Engine room j/b (on left side of engine compt) Epa Epa2 Ge01 Hot at all times Hot in on & start I7 (dash harn, at right end of dash) Ig1 fuse 7.5a Igsw Instrument panel j/b (behind left side of dash) J/c 2 J/c 6 (left side of dash) J/c 7 (behind right side of dash) L11 Me01 Mrel Nca Odms Passenger side j/b (behind right side of dash) Pnk Red Sil Tach Vcp1 Vcp2 Vcpa Vpa Vpa2 Wfse 2.4L, A/T Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004 List of elements for 2.4L, A/T Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004: 42 (in eng harn, rear of eng) e14 (on transmission) park/neutral position switch (top of eng) Center j/b (behind upper center of dash) Counter gear speed sensor (left side of engine compt) Dome fuse 10a Dsl E05 E06 E7 (engine harn, (left side of eng compt) Ecu-b fuse 7.5a Efi 2 fuse 10a Engine control module (ecm) (behind right side of dash) Engine controls system Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Heater fuse 10a Hot at all times Hot in on & start Ign fuse 10a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash) K13 M12 Nc+ Nc- Nt+ Nt- P/n Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Stop fuse 10a Stoplight switch (above brake pedal) Th0 Turbine speed sensor (on side of trans- mission) 2.4L, A/T Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004 List of elements for 2.4L, A/T Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004: 29 A/t oil temp ind Anti-lock brakes system B12 C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system D11 Dsl Ect snow ind Electronically controlled transmission solenoid (in transmission) G10 Ib (at right dash brace) Instrument panel j/b (behind left side of dash) Lcd O/d off Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Slt+ Slt- Speedometer Tachometer Tho 2.4L, A/T Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004 List of elements for 2.4L, A/T Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004: 39 (in eng hard, rear of eng) e9 (left side of cyl block) ef (near air cleaner housing, on air duct) mass airflow meter (on throttle body) throttle position sensor +bm B10 Body ecu (behind right side of dash) Center jab (behind upper center of dash) Computer data lines system E01 E02 E2g Electronically controlled transmission pattern select switch Engine control module (ecm) (behind right side of dash) Engine controls system Engine coolant temperature sensor (top front of eng) Engine room r/b (on left side of engine compt) Etcs fuse 10a F13 Hot at all times Ibc (at right dash brace) Instrument panel jab (behind left side of dash) Mpx1 Mpx2 Nsw Pnk Red S/c 28, 29 (behind right side of dash) S28 S29 Snow Spd Sta Stp Tha Thw Transmission control switch Vta1 Vta2
3.3L 3.3L, A/T Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004 List of elements for 3.3L, A/T Wiring Diagram (1 of 4) for Toyota Highlander Limited 2004: 41 (top of eng) ed +b2 A/t indicator switch (left side of trans) Accel position sensor (above accelerator pedal) Batt Computer data lines system E03 Efi 1 fuse 20a Efi main relay Eh (under left headlight) Engine control module (ecm) (behind right side of dash) Engine room j/b (on left side of engine compt) Epa Epa2 Ge01 Hot at all times Hot in on & start I7 (dash harn, at right end of dash) Ig1 fuse 7.5a Igsw Instrument panel j/b (behind left side of dash) J/c 17 (behind left side of dash) J/c 2 J/c 6 (left side of dash) J/c 7 (behind right side of dash) L11 Me01 Mrel Nca Odms Passenger side j/b (behind right side of dash) Pnk Red Sil Tach Vcp1 Vcp2 Vcpa Vpa Vpa2 Wfse 3.3L, A/T Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004 List of elements for 3.3L, A/T Wiring Diagram (2 of 4) for Toyota Highlander Limited 2004: 44 (in eng harn, rear of eng) e14 (on left side of transmission) park/neutral position switch (top of eng) Center j/b (behind upper center of dash) Counter gear speed sensor (left side of engine compt) Dome fuse 10a Dsl E05 E06 E7 (engine harn, rear of engine) Ecu-b fuse 7.5a Efi 2 fuse 10a Engine control module (ecm) (behind right side of dash) Engine controls system Engine room j/b (on left side of engine compt) Engine room r/b (on left side of engine compt) Heater fuse 10a Hot at all times Hot in on & start Ign fuse 10a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash) K13 M12 Nc+ Nc- Nt+ Nt- P/n Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Sl3+ Sl3- Slt+ Slt- Stop fuse 10a Stoplight switch (above brake pedal) Th01 Turbine speed sensor (on side of trans- mission) 3.3L, A/T Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004 List of elements for 3.3L, A/T Wiring Diagram (3 of 4) for Toyota Highlander Limited 2004: 31 A/t oil temp ind Anti-lock brakes system B12 C11 C12 Center j/b (behind upper center of dash) Combination meter Computer data lines system D11 Dsl Ect snow ind Electronically controlled transmission solenoid (in transmission) G10 Ib (at right dash brace) Instrument panel j/b (behind left side of dash) Lcd O/d off Passenger side j/b (behind right side of dash) Pnk Red Sl1+ Sl1- Sl2+ Sl2- Sl3+ Sl3- Slt+ Slt- Speedometer Tachometer Tho 3.3L, A/T Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004 List of elements for 3.3L, A/T Wiring Diagram (4 of 4) for Toyota Highlander Limited 2004: 40 (in eng harn, rear of eng) e14 (left rear of eng compt) mass airflow meter (side of throttle body) throttle control motor & sensor (top of engine) ed +bm B10 Body ecu (behind right side of dash) Center j/b (behind upper center of dash) Computer data lines system E01 E02 E14 E2g Electronically controlled transmission pattern select switch Engine control module (ecm) (behind right side of dash) Engine controls system Engine coolant temperature sensor (front center of eng) Engine room r/b (on left side of engine compt) Etcs fuse 10a F13 Hot at all times Ib (at right dash brace) Instrument panel j/b (behind left side of dash) Mpx1 Mpx2 Nsw Pnk Red S/c 28, 29 (behind right side of dash) S28 S29 Snow Spd Sta Stp Tha Thw Transmission control switch & transmission shift main switch Vta1 Vta2
WARNING SYSTEMS Warning Systems Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Warning Systems Wiring Diagram for Toyota Highlander Limited 2004: 75 A/c control assembly A10 A11 A16 A17 A18 Acc Air bag sensor assembly (below front of center console) B10 B11 B12 Becu Bgnd Body ecu (behind right side of dash) Bsw Buckle switch (front passenger's side) (in passenger's seat belt buckle) Buzzer C11 C12 Center j/b (behind upper center of dash) Combination meter D11 Dcty Dome fuse 10a Door ind Driver's seat belt ind Ecu-b fuse 7.5a Engine control module (behind right side of dash) Engine room j/b (on left side of engine compt) Fsr+ Fsr- G10 Gateway ecu (behind right side of dash) Heater fuse 10a Hot at all times Hot in on or acc Hot in on or start Ib (at right dash brace) Ic (at right kick panel) Ig1 fuse 7.5a Instrument panel j/b (behind left side of dash) J/c 6 (left side of dash, behind instrument cluster) J12 K10 K13 Ksw Lbe+ Lbe- Left buckle switch (on driver's seat) Left front door courtesy switch (left "b" pillar) Mpd1 Mpd2 Mpx+ Mpx- Mpx1 Mpx2 Occupant classification ecu (below right front seat) Passenger seat belt warning Passenger side j/b (behind right side of dash) Pnk Power window master switch with ecu (in driver's door) Radio 2 fuse 7.5a Red Right front occupant classification sensor (in right front seat) S30 S31 Sgd2 Short connector (behind left side of dash) Sig2 Svc2 Unlock warning switch (in steering column) W/ curtain shield air bag W/ navigation W/o curtain shield air bag W/o navigation
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Front Wiper/Washer Wiring Diagram for Toyota Highlander Limited 2004: 30 (behind right side of dash) passenger side j/b (left side of dash, behind instrument cluster) j/c 6 (right front of engine compt) front washer motor C11 C12 C14 Combination meter Combination switch D14 Front washer switch Front wiper motor (on left rear of engine compt) Front wiper switch High Hot in on or start Ia (at left kick panel) Ign fuse 10a Instrument panel j/b (behind left side of dash) Int Int time Junction connector 3 (on right side of engine compt) Low Off Passenger side j/b (behind right side of dash) Pnk Red Solid state Washer fuse 20a Washer level ind Washer level sensor (right front of engine compt) Wiper fuse 25a Rear Wiper/Washer Wiring Diagram for Toyota Highlander Limited 2004 List of elements for Rear Wiper/Washer Wiring Diagram for Toyota Highlander Limited 2004: 17 C14 Combination switch D14 Hot in on or start Ia (at left kick panel) Instrument panel j/b (behind left side of dash) Int Off Passenger side j/b (behind right side of dash) Pnk Rear washer motor (right front of engine compt) Rear wiper & washer switch Rear wiper motor (in rear door) Rr wip fuse 15a Washer 1 Washer 2 Washer fuse 20a
