ENGINE PERFORMANCE – Lexus SC 430 2002 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L, Engine Performance Wiring Diagrams (1 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (1 of 6) for Lexus SC 430 2002:

• (behind dash, right of steering column) transponder key amplifier
• (behind right side of dash) j/c 13
• (under steering column) ih
• +b1
• +bm
• A/c system
• Accel position sensor (behind left center of dash)
• Acmg
• B16
• Batt
• C12
• C15
• Ccs
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• Cooling fans system
• Cpu
• Cruise control system
• Data link connector 3 (below left side of dash)
• Driver side j/b (behind left kick panel)
• E5 (engine harn, in ecu box)
• Ect pwr
• Ect snow
• Ed (left front fender)
• Efii
• Efio
• Eng+
• Eng-
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Ep1
• Ep2
• Epa
• Eptk
• Etam
• Fpr
• Htl2
• Htr2
• Igsw
• Imi
• Imo
• J/c 9 (behind top left end of dash)
• Mil ind
• Mpx1
• Mpx2
• Mrel
• Neo
• Oxl2
• Oxr2
• Pnk
• Pre
• Ptnk
• Red
• Rfc
• Sil
• Skid control ecu (behind left end of dash)
• Speedometer
• Sta
• Stp
• Tac
• Tach
• Tachometer
• Tam
• Tbp
• Trc+
• Trc-
• Vapor pressure sensor (under left rear of vehicle)
• Vcc
• Vcp1
• Vcp2
• Vcpa
• Vpa
• Vpa1
• Vpa2
• Vptk
• Wfse
• Wsfe

4.3L, Engine Performance Wiring Diagrams (2 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (2 of 6) for Lexus SC 430 2002:

• (in ecu box) j/c 4, j/c 5
• (left end of dash) driver side j/b ecu
• (on top of brake pedal bracket) stoplight switch
• Cir opn relay
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Ed (left front fender)
• Efi fuse 25a
• Efi relay
• Engine room r/b 1 (on right side of engine compt, behind strut tower)
• Engine room r/b 2 (on left side of engine compt, behind strut tower)
• Etcs fuse 15a
• F/ pmp relay
• Fuel pump & sender (in fuel tank)
• Fuel pump resistor (left rear of engine compt)
• Hot at all times
• Hot in on or start
• J/c 17 (left quarter panel)
• J/c 2 (in engine room r/b 2)
• Red
• Stop fuse 5a
• Stpi
• Stpo
• Vsv (vapor pressure sensor) (under left rear of vehicle)

4.3L, Engine Performance Wiring Diagrams (3 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (3 of 6) for Lexus SC 430 2002:

• (behind left kick panel) driver side j/b
• (engine harn, in ecu box)
• (generator) charging system
• (in engine room r/b 2) j/c 2
• (on left side of engine compt, behind strut tower) engine room r/b 2
• (on transmission) park/neutral position switch
• Acc
• Braided
• C14
• Ed (left front fender)
• Efi 2 fuse 10a
• Eknl
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Eoil
• Eol1
• F14
• Hot at all times
• Htl
• Ignition switch
• Knkl
• Knkr
• Left knock sensor (on top center of engine)
• Lock
• Mol
• Nco+
• Nco-
• O/d direct clutch speed sensor (on trans)
• Oil
• Oxl1
• P/n
• Red
• Right knock sensor (on top center of engine)
• Short pin 1
• Short pin 2
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Sp2+
• Sp2-
• Start
• Starter fuse 7.5a
• Starter relay
• Vehicle speed sensor (electronically controlled transmission) (on trans)

4.3L, Engine Performance Wiring Diagrams (4 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (4 of 6) for Lexus SC 430 2002:

• (behind right kick panel) passenger side j/b
• (on right front of engine) engine oil level sensor
• (on transmission) a/t indicator light switch (integral to park/neutral position switch)
• (under center console, near selector lever) shift lock control ecu
• At4
• Atl
• Braided
• C10
• C16
• Driver side j/b
• Eb (side of right cyl head)
• Ec (side of left cyl head)
• Electronically controlled transmission solenoid (in transmission)
• Engine room r/b 2 (on left side of engine compt, behind strut tower)
• Hot in on or start
• Ign fuse 5a
• Inj fuse 10a
• J/c 4, j/c 5 (in ecu box)
• J/c 7 (in ecu box)
• J/c 9, j/c 10 (behind top left end of dash)
• J10
• Level
• Nssd
• Nssl
• Red
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Temp

4.3L, Engine Performance Wiring Diagrams (5 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (5 of 6) for Lexus SC 430 2002:

• (engine harn, top left side of engine)
• (in ecu box) j/c 6
• (on top right side of engine) noise filter (ignition right bank)
• (right side kick panel) passenger side j/b ecu
• Braided
• E2 (engine harn, top rear of engine)
• E2g
• Ec (side of left cyl head)
• Electronically controlled transmission pattern select switch
• Engine coolant temperature sensor (on top right side of engine)
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Heated oxygen sensor (bank 1 sensor 1) (on left side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, near catalytic conv)
• Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, near catalytic conv)
• Ih (under steering column)
• Mass airflow (maf) meter (on right side of engine compt, in air intake duct)
• Mpx-
• Pwr
• Snow
• Tha
• Vsv (acis) (on top right rear of engine)
• Vsv (canister closed valve) (on right side of engine)
• Vsv (evap) (on top rear of engine)

4.3L, Engine Performance Wiring Diagrams (6 of 6) for Lexus SC 430 2002

List of elements for 4.3L, Engine Performance Wiring Diagrams (6 of 6) for Lexus SC 430 2002:

• (at top left rear of engine) noise filter (ignition left bank)
• (engine harn, top left side of engine)
• (engine harn, top rear of engine)
• (in ecu box) j/c 6
• A/c system
• Acis
• Braided
• Camshaft position sensor (on left front of engine)
• Ccv
• Crankshaft position sensor (on left front of engine)
• E01
• E02
• E03
• Eb (side of right cyl head)
• Ec (side of left cyl head)
• Eg2
• Ene
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Eor1
• Eta
• Etha
• Ethw
• Evg
• Evvl
• Evvr
• G2-
• Ge01
• Htr
• If1l
• If1r
• If2l
• If2r
• Ignition coil & igniter 1
• Ignition coil & igniter 2
• Ignition coil & igniter 3
• Ignition coil & igniter 4
• Ignition coil & igniter 5
• Ignition coil & igniter 6
• Ignition coil & igniter 7
• Ignition coil & igniter 8
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Igt7
• Igt8
• Lcki
• Left camshaft timing oil control valve (on top left side of engine)
• Left vvt sensor (on top left side of engine)
• Me01
• Mops
• Ne+
• Ne-
• Ocr+
• Ocr-
• Ocv+
• Ocv-
• Oil pressure switch (on left front side of engine)
• Oxr1
• Prg
• Red
• Right camshaft timing oil control valve (on top right side of engine)
• Right vvt sensor (on top right side of engine)
• Tha
• Throttle control motor & sensor (on throttle body)
• Thw
• Vta
• Vta2
• Vvl+
• Vvl-
• Vvr+
• Vvr-