ENGINE PERFORMANCE – Toyota Highlander 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.4L

2.4L, Engine Performance Wiring Diagram (1 of 3) for Toyota Highlander 2003

List of elements for 2.4L, Engine Performance Wiring Diagram (1 of 3) for Toyota Highlander 2003:

• #10
• #20
• #30
• #40
• (behind left kick panel)
• (on side of trans) turbine speed sensor
• (rear of engine)
• (right end of dash)
• (right kick panel)
• (right side of cylinder block)
• (right side of cylinder block) ee
• (right side of dash)
• (right side of dash) i6
• A/c system
• Anti-theft system
• Camshaft timing control valve (right front of engine)
• Code
• Cooling fans system
• Cooling fans system
• Counter gear speed sensor (left side of engine compt)
• Cruise control ecu (behind left side of dash)
• E02
• E03
• E8 (top of engine)
• E9 (rear of engine)
• Ef (left side of cylinder block)
• Electronically controlled transmission solenoid
• Engine control module (behind right end of dash)
• Engine coolant temperature sensor (left rear of engine)
• Eo1
• Fan
• Fuel injectors
• Hot in on or start
• Idle air control valve (on throttle body)
• Idlo
• Ig2 fuse 15a
• Igf
• Ignition coils & igniters
• Igt1
• Igt2
• Igt3
• Igt4
• Imld
• Instrument panel j/b (behind left side of dash)
• J/c
• J/c 6 (behind left side of dash)
• Knk1
• Ksw
• Nc+
• Nc-
• Noise filter
• Nsw
• Nt+
• Nt-
• O/d main switch (center console)
• Ocv+
• Ocv-
• Od1
• Odms
• Passenger side j/b (behind right side of dash)
• Pnk
• Pr2
• Pre
• Ptnk
• Rear of vehicle)
• Red
• Rsd
• Rxck
• Sl1+
• Sl1-
• Sl2+
• Sl2-
• Slt+
• Slt-
• Spd
• Starting system
• Switching valve) (left
• Tach
• Tbp
• Tha
• Tho
• Throttle position sensor (side of throttle body)
• Thw
• Transponder key amplifier (w/ immobilizer) (in steering column)
• Txct
• Unlock warning switch (w/ immobilizer) (in steering column)
• Vapor pressure sensor (rear of vehicle)
• Vsv (pressure
• Vta1

2.4L, Engine Performance Wiring Diagram (2 of 3) for Toyota Highlander 2003

List of elements for 2.4L, Engine Performance Wiring Diagram (2 of 3) for Toyota Highlander 2003:

• (rear of engine)
• A/f fuse 25a
• A/f relay
• Airbag sensor assembly (below shifter console)
• Bc (left side of rear crossmember)
• C11
• C12
• Center j/b (behind center of dash)
• Circuit opening relay
• Combination meter
• E10
• Ecu-b fuse 7.5a
• Efi fuse 20a
• Efi relay
• Engine room j/b (left side of engine compt)
• Engine room r/b (left side of engine compt)
• F13
• Fuel pump
• G10
• Hot at all times
• Hot in on or start
• Ib (right dash brace)
• Ig1 fuse 7.5a
• Ign fuse 7.5a
• Instrument panel j/b (behind left side of dash)
• J/c 2 (behind left head- lamp)
• L11
• M12
• Malfunction indicator lamp
• O/d off lamp
• 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)
• R/b 1 (behind left side of dash)
• Speedo
• Stop fuse 20a
• Stoplight switch (above brake pedal)
• Tach
• Vsv (canister closed valve) (left rear of engine compt)

2.4L, Engine Performance Wiring Diagram (3 of 3) for Toyota Highlander 2003

List of elements for 2.4L, Engine Performance Wiring Diagram (3 of 3) for Toyota Highlander 2003:

• (center rear of engine) camshaft position sensor
• (left front engine) crankshaft position sensor
• (left rear of engine compt) (evap) vsv
• (left rear of engine compt) mass air flow meter
• (on exhaust manifold) (bank 1 sensor 1) air fuel ratio sensor
• (on exhaust manifold) (bank 2 sensor 1) air fuel ratio sensor
• (on exhaust) (bank 1 sensor 2) heated oxygen sensor
• (on exhaust) (bank 2 sensor 2) heated oxygen sensor
• (right
• (right side of cylinder block)
• (right side of cylinder block) ee
• (right side of dash) i6
• (right side of dash) j/c 7
• A/c system
• A/t indicator switch (left side of transmission)
• A12
• Acmg
• Af1a+
• Af1a-
• Af2+
• Af2-
• Batt
• Ccv
• Charging system
• Computer data lines system
• Data link connector 3 (under left side of dash)
• Dsl
• E04
• E05
• E2g
• E9 (rear of engine)
• Eng+
• Eng-
• Engine control module (behind right end of dash)
• Eom
• Evp1
• F/ps
• G22+
• Haf1a
• Haf2a
• Ht1b
• Ht2b
• Igsw
• J/c 6 (left
• Knock sensor
• Lck1
• Mops
• Mpx1
• Mpx2
• Mrel
• Nca a
• Ne+
• Ne-
• Neo
• Odlp
• Ox1b
• Ox2b
• Passenger side j/b (behind
• Pnk
• Psw
• Red
• Right side of dash)
• S10
• S11
• Side of dash)
• Side of engine)
• Sil
• Skid control ecu (above instrument panel j/b)
• Sta
• Starting system
• Stp
• Trc+
• Trc-
• W/ stability ctrl
• W/o stability ctrl
• Wfse

3.0L

3.0L, Engine Performance Wiring Diagram (1 of 3) for Toyota Highlander 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (1 of 3) for Toyota Highlander 2003:

• #10
• #20
• #30
• #40
• #50
• #60
• (front of engine) e6
• (rear of engine)
• (rear side of surge tank) ed
• (right side of dash)
• (right side of dash) i6
• (right side of surge tank) ec
• Aci1
• Acis
• Afl+
• Afl-
• Afr+
• Afr-
• Air fuel ratio sensor (bank 1, sensor 1) (on right
• Air fuel ratio sensor (bank 2, sensor 1) (on left
• Camshaft timing control valve (right) (right rear of engine)
• Crankshaft position sensor (left front of engine)
• Dsl
• E01
• E02
• E03
• E04
• E05
• E2g
• E6 (front of engine)
• Ed (rear of surge tank)
• Engine control module (behind right end of dash)
• Engine coolant temperature sensor (front of engine)
• Evp1
• Exhaust manifold)
• Fuel injectors
• Hafl
• Hafr
• Hot in on or start
• Ig2 fuse 15a
• Igf
• Ignition coils & igniters
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Instrument panel j/b (behind left side of dash)
• J/c 7 (right side of dash)
• Knkl
• Knkr
• Knock sensor (left center of engine)
• Knock sensor (right center of engine)
• Mass air flow meter (left rear of engine compt)
• Nc+
• Nc-
• Nca
• Ne+
• Ne-
• Noise filter
• Oc1+
• Oc1-
• Oc2+
• Oc2-
• Pnk
• Power steering oil pressure switch (front of engine)
• Red
• Rso
• Sl1+
• Sl1-
• Sl2+
• Sl2-
• Tha
• Tho
• Throttle position sensor (on side of throttle body)
• Thw
• Vapor pressure sensor (rear of vehicle)
• Vta1
• Vv1+
• Vvt sensor (left) (left rear of engine)
• Vvt sensor (right) (right rear of engine)
• W2+

3.0L, Engine Performance Wiring Diagram (2 of 3) for Toyota Highlander 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (2 of 3) for Toyota Highlander 2003:

• (rear of surge tank) ed
• (right dash brace)
• A/f fuse 25a
• A/f relay
• Bc (left side of rear crossmember)
• C11
• C12
• Camshaft timing control valve (left) (left rear of engine)
• Center j/b (behind upper center of dash)
• Circuit opening relay
• Combination meter
• Counter gear speed sensor (left side of engine compt)
• E10
• E7 (rear of engine)
• Ecu-b fuse 7.5a
• Electronically controlled transmission solenoid
• Engine room j/b (left side of engine compt)
• Engine room r/b (left side of engine compt)
• F13
• Fuel pump
• G10
• Hot at all times
• Hot in on or start
• Idle air control valve (on throttle body)
• Ig1 fuse 7.5a
• Ign fuse 7.5a
• Instrument panel j/b (behind left side of dash)
• L11
• M12
• Malfunction indicator lamp
• Passenger side j/b (behind right side of dash)
• Pnk
• R/b 1 (behind left side of dash)
• Red
• Speedometer
• Stop fuse 20a
• Stoplight switch (above brake pedal)
• Tachometer
• Vsv (acis 1) (center top of engine)
• Vsv (acis 2) (center rear of engine)
• Vsv (canister closed valve) (left rear of engine compt)
• Vsv (evap) (center top of engine)

3.0L, Engine Performance Wiring Diagram (3 of 3) for Toyota Highlander 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (3 of 3) for Toyota Highlander 2003:

• (behind
• (behind right side of dash) passenger side j/b
• (in steering column) (w/immobilizer)
• (left kick panel) j/c 9
• (left side of engine compt)
• (right end of dash)
• (right side of dash)
• A/c system
• A/t indicator switch (left side of transmission)
• A12
• Acm1
• Acmg
• Airbag sensor assembly (below shifter console)
• Anti-theft system (theft indicator light)
• Batt
• Ccv
• Charging system
• Code
• Computer data lines system
• Converter)
• Cooling fans system
• Cruise control ecu
• Data link connector 3 (under left side of dash)
• Ed (rear of surge tank)
• Efi fuse 20a
• Efi relay
• Eng+
• Eng-
• Engine control module (behind right end of dash)
• Engine room j/b (left side of engine compt)
• Eom
• F/ps
• Hot at all times
• Hts
• Ic (right kick panel)
• Idlo
• Igsw
• Imld
• J/c 2 (behind left head- lamp)
• J/c 6 (behind left side of dash)
• J/c 8 (behind right side of dash)
• Ksw
• Lck1
• Left side of dash)
• Mops
• Mpx1
• Mpx2
• Mrel
• Nca
• Neo
• Nsw
• Nt+
• Nt-
• O/d main switch (center console)
• Od1
• Odlp
• Odms
• Oil pressure switch (left front of engine)
• Oxs
• Passenger side j/b (behind right side of dash)
• Pnk
• Pre
• Ptnk
• Rxck
• S10
• S11
• Sil
• Skid control ecu (above instrument panel j/b)
• Slt+
• Slt-
• Spd
• Sta
• Starting system
• Stp
• Tach
• Tbp
• Transponder key amplifier
• Trc+
• Trc-
• Turbine speed sensor (on side of trans)
• Txct
• Unlock warning switch
• Vsv (acm) (left front of engine compt)
• Vsv (pressure switching valve) (left rear of vehicle)
• W/ stability ctrl
• W/o stability ctrl