ENGINE PERFORMANCE – Lexus ES 300 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.0L

3.0L, Engine Performance Wiring Diagram (1 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (1 of 6) for Lexus ES 300 2003:

• (behind left side of dash) driver side j/b
• (left front fender)
• (left side of dash) i2
• (under rear of vehicle) vsv (vapor pressure sensor)
• +b1
• +bm
• A/c system
• A/ci
• A/cs
• A/f fuse 25a
• A104
• A110
• A114
• A51
• A82
• A90
• A91
• A92
• A94
• Acmg
• B100
• B101
• B103
• B104
• B106
• B107
• B109
• B110
• B111
• B118
• B119
• B120
• B121
• B123
• B124
• B126
• B127
• B129
• B130
• B16
• B26
• B32
• B36
• B43
• B46
• B51
• B52
• B58
• B63
• B69
• B71
• B72
• B74
• B77
• B78
• B79
• B80
• B81
• B83
• B84
• B86
• B87
• B89
• B91
• B94
• B97
• B98
• B99
• Batt
• C/ opn relay
• Ccs
• Code
• Cruise control system
• Efi fuse 20a
• Efi relay
• Els
• Els2
• Eng+
• Eng-
• Engine control module (ecm) (behind right side of dash)
• Engine room j/b (on left side of engine compt)
• Eom
• Epa
• Epa2
• Etcs fuse 10a
• G17
• G20
• Hot at all times
• Hot in on or start
• Ig2 fuse 10a
• Igsw
• Imld
• K17
• Ksw
• Mrel
• Neo
• Passenger side j/b (behind right side of dash)
• Pnk
• Ptnk
• Red
• Rxck
• Sil
• Spd
• St1-
• Stp
• Tach
• Tbp
• Thr
• Thwo
• Trc+
• Trc-
• Txct
• Vcp2
• Vcpa
• Vpa
• Vpa2
• W/ vsc
• W/o vsc
• Wfse

3.0L, Engine Performance Wiring Diagram (2 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (2 of 6) for Lexus ES 300 2003:

• (behind left side of dash) stoplight switch
• (in fuel tank) fuel pump & fuel sender
• (left dash reinforcement)
• A/f htr relay
• Accelerator pedal position sensor (behind left center of dash)
• Code
• Data link connector 3 (at lower left side of dash)
• Driver side j/b (behind left side of dash)
• Eng+
• Eng-
• Engine room r/b (on left side of engine compt)
• G13
• G16
• Gauge1 fuse 10a
• Gauge2 fuse 10a
• Gnd
• Hot at all times
• Hot in on or start
• Hot w/ def relay energized
• Hot w/ tail relay energized
• J/c 12 (forward of left rear fenderwell)
• J/c 4 (behind left center of dash)
• J/c 6 (behind upper right side of dash)
• Left vvt solenoid (on left rear of engine)
• Mir htr fuse 10a
• Neo
• Pnk
• Ptnk
• Red
• Right vvt solenoid (on right rear of engine)
• Rxck
• Sil
• Skid control ecu (behind right side of dash)
• Stop fuse 15a
• Tail fuse 10a
• Transponder key amplifier (on right side of steering column)
• Trc+
• Trc-
• Txct
• Unlock warning switch
• Vapor pressure sensor (under rear of vehicle)
• Vcc
• Wfse

3.0L, Engine Performance Wiring Diagram (3 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (3 of 6) for Lexus ES 300 2003:

• (behind left side of dash) driver side j/b
• (behind right side of dash) passenger side j/b
• (dash harn, near stereo component amplifier)
• (on transaxle) a/t indicator light switch (integral to park/neutral position switch)
• A55
• A57
• A85
• A87
• Braided
• Ccv
• Cooling fans system
• E03
• Ee (left side of cylinder head)
• Ef (intake side of cylinder block)
• Engine control module (ecm) (behind right side of dash)
• Evp1
• Ge01
• Ht1b
• Ht2b
• Ia (left dash reinforcement)
• Left vvt sensor (on left rear of engine)
• Me01
• Mt2
• Mt4
• Mtd
• Mtl
• Nssd
• Nssl
• Oc1+
• Oc1-
• Oc2+
• Oc2-
• Power steering oil pressure switch (near front of engine)
• Red
• Throttle control motor (on throttle body)
• Transmission control switch
• Vsv (canister closed valve) (at left rear of engine compt)
• Vsv (evap) (on top of engine)
• Vv1+
• Vv2+
• Vv2-
• Vvl+
• Vvl-

3.0L, Engine Performance Wiring Diagram (4 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (4 of 6) for Lexus ES 300 2003:

• Combination meter
• Counter gear speed sensor (near rear of engine)
• E2 (engine harn, near fuel inj 2)
• Ef (intake side of cylinder block)
• Gnd
• Igf
• Ignition coil & igniter 1
• Ignition coil & igniter 2
• Ignition coil & igniter 3
• Ignition coil & igniter 4
• Ignition coil & igniter 5
• Ignition coil & igniter 6
• Igt
• Micro computer
• Mil ind
• Noise filter (ignition) (at top of engine)
• Pnk
• Power
• Red
• Right vvt sensor (on right rear of engine)
• Speedometer
• Tachometer
• Turbine speed sensor (near left rear of engine)

3.0L, Engine Performance Wiring Diagram (5 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (5 of 6) for Lexus ES 300 2003:

• (behind lower right side of dash) j/c 11
• (dash harn, near grommet on right side of firewall)
• (dash harn, near j/c 10)
• (engine harn, near power steering oil pressure switch)
• Acc
• E2 (engine harn, near fuel inj 2)
• E2g
• Ef (intake side of cylinder block)
• Engine coolant temp sensor (on top front of engine)
• Engine room j/b (on left side of engine compt)
• Fuel injector
• Heated oxygen sensor (bank 1 sensor 2) (near left side of engine)
• Heated oxygen sensor (bank 2 sensor 2) (on left exhaust manifold)
• Hot at all times
• Hot in on or start
• I6 (dash harn, near grommet on right side of firewall)
• Ign fuse 15a
• Ignition switch
• L10
• Lock
• Mass airflow meter (on left side of engine compt, part of air intake assembly)
• Pnk
• Red
• Start
• Tha
• Vsv (acis 1) (on top of engine)
• Vsv (acis 2) (on top of engine)
• Vsv (acm) (on left front of engine compt)
• Vsv (aicv) (on left rear of engine)

3.0L, Engine Performance Wiring Diagram (6 of 6) for Lexus ES 300 2003

List of elements for 3.0L, Engine Performance Wiring Diagram (6 of 6) for Lexus ES 300 2003:

• (dash harn, near stereo component amplifier)
• (right side of dash)
• (right side of dash) i6
• Aci1
• Acis
• Acm1
• Af+
• Af-
• Afl+
• Afl-
• Afr+
• Afr-
• Aicv
• Air fuel ratio sensor (bank 1 sensor 1) (on right side of engine, in exhaust pipe)
• Air fuel ratio sensor (bank 2 sensor 1) (on left side of engine, in exhaust pipe)
• Crankshaft position sensor (on lower left front of engine)
• Dsl
• E01
• E02
• E04
• E05
• E1 ot
• E1 s4
• E10
• E2 slt+
• E2g
• Ee (left side of cylinder head)
• Electronically controlled transmission solenoid (on transaxle)
• Engine control module (ecm) (behind right side of dash)
• Engine room j/b (on left side of engine compt)
• Hafl
• Hafr
• I6 (dash harn, near grommet on right side of firewall)
• Igf
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Inj 1
• Inj 2
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Knkl
• Knkr
• Knock sensor 1 (on top of engine)
• Knock sensor 2 (on top of engine)
• Nc+
• Nc-
• Ne+
• Ne-
• Nsw
• Nt+
• Nt-
• Ox1b
• Ox2b
• P/n
• Park/ neutral position switch (on transaxle)
• Pnk
• Red
• Sl1+
• Sl1-
• Sl2+
• Sl2-
• Sl3+
• Sl3-
• Slt+
• Slt-
• Sta
• Tha
• Tho
• Throttle position sensor (on throttle body)
• Thw
• Vta1
• Vta2