ENGINE PERFORMANCE – Toyota Highlander Limited 2004 – SYSTEM WIRING DIAGRAMS

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:

• (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:

• (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:

• (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:

• 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:

• (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:

• (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:

• (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:

• (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:

• (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:

• 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:

• (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:

• (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