ENGINE PERFORMANCE – Lexus SC 430 2006 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus SC 430 2006:

• (behind left kick panel) driver side j/b ecu
• (on top of brake pedal bracket) stoplight switch
• (under steering column) ih
• +b1
• Accel position sensor (behind left center of dash)
• Acmg
• Air conditioning system
• B13
• B16
• Batt
• Canh
• Canl
• Center j/b (behind right center of dash)
• Combination meter
• Computer data lines system
• Cooling fans system
• Cpu
• D12
• Data link connector 3 (behind left side of dash)
• Ect pwr ind
• Ect snow ind
• Ed (rear of left fender)
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Epa
• Epa2
• Etam
• Fpr
• Ht1b
• Ht2b
• Igsw
• Imi
• Imo
• Mil ind
• Mpmp
• Mrel
• O1b-
• O2b-
• Ox1b
• Ox2b
• Ppnp
• Pr2
• Red
• Rfc
• Skid control ecu (behind left end of dash)
• Spd
• Speedometer
• Sta
• Stp
• Stpi
• Stpo
• Tac
• Tach
• Tachometer
• Tam
• Vcp2
• Vcpa
• Vpa
• Vpa2
• Vpmp

4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus SC 430 2006:

• Cir opn relay
• D-ig fuse 10a
• Driver side j/b (behind left kick panel)
• Ed (rear of left fender)
• Efi fuse 25a
• Efi relay
• Efii
• Efio
• 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, forward of strut tower)
• Etcs fuse 15a
• F/ pmp relay
• Fuel pump & sender (in fuel tank)
• Fuel pump resistor (at left rear of engine compt)
• Hot at all times
• Hot in on or start
• Ign fuse 5a
• J/c 17 (left rear of luggage compartment)
• J/c 2 (in engine room r/b 2)
• Red
• Stop fuse 5a
• Transponder key computer (left side of dash, behind gauge assembly)

4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus SC 430 2006:

• (in engine room r/b 2) j/c 2
• (on left side of engine compt, forward of strut tower) engine room r/b 2
• (on top center of engine)
• Acc
• Efi 2 fuse 10a
• Ekn2
• Eknk
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• Hot at all times
• Ignition switch
• Knk1
• Knk2
• Knock sensor (bank1)
• Knock sensor (bank2)
• Lock
• Mol
• Mops
• Nsw
• Oil pressure switch (on left front side of engine)
• Red
• Short pin 1
• Short pin 2
• Sp2+
• Sp2-
• Start
• Starter fuse 7.5a
• Starter relay
• Vehicle speed sensor (electronically controlled transmission) (on transmission)

4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus SC 430 2006:

• (behind left kick panel) driver side j/b
• (left side of engine compartment) j/c 23
• (on right front of engine) engine oil level sensor
• (on transmission) park/neutral position switch
• C14
• Canister pressure sensor
• Canister pump module (rear of vehicle chassis)
• Eb (right side of cylinder head)
• Ec (left side of cylinder head)
• Ed (rear of left fender)
• F14
• Gnd
• J/c 24 (left side of engine compartment)
• J/c 4 & 5 (in ecu box)
• J/c 4 (in ecu box)
• Leak detection pump
• Level
• Nca
• P/n
• Sgnd
• Temp
• Vcc
• Vent valve
• Vout

4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus SC 430 2006:

• (injector 1,2,4,6 & 8: top right side of engine) (injector 3,5 & 7: top left side of engine)
• (left side of engine compartment) j/c 23
• (on top rear of engine)
• E2 (engine wire harn, near breakout to ground eb)
• E2g
• Engine coolant temperature sensor (on top right side of engine)
• Engine room r/b 2 (on left side of engine compt, forward of strut tower)
• Fuel injectors
• 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)
• Hot in on or start
• Inj fuse 10a
• J/c 23 (left side of engine compartment)
• Mass airflow (maf) meter (on right side of engine compt, in air intake duct)
• Nca
• Tha
• Vsv (acis) (on top right rear of engine)
• Vsv (purge)

4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus SC 430 2006

List of elements for 4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus SC 430 2006:

• (left side of engine compartment) j/c 23 & 24
• (right side of cylinder head) eb
• (top left side of engine)
• (top right side of engine)
• +bm
• A a
• Acis
• Air conditioning system
• Camshaft position sensor (on left front of engine)
• Camshaft timing oil control valve (top left side of engine)
• Crankshaft position sensor (on left front of engine)
• E01
• E02
• E03
• E2g
• Eb (right side of cyl head)
• Engine control module (ecm) (at left side of engine compt, in ecu box)
• G2-
• Ge01
• Ht1a
• Ht2a
• Igf
• Igf1
• Igf2
• 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
• Igt
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Igt7
• Igt8
• Inj 1
• Inj 2
• Inj 3
• Inj 4
• Inj 5
• Inj 6
• Inj 7
• Inj 8
• J/c 23 (left side of engine compartment)
• J23
• J24
• Lcki
• Left vvt sensor (on top left side of engine)
• Me01
• Nca
• Ne+
• Ne-
• O1a
• O2a-
• Oc1+
• Oc1-
• Ocr+
• Ocr-
• Ox1a
• Ox2a
• Prg
• Red
• Right camshaft timing oil control valve (on top right side of engine)
• Right vvt sensor (on top right side of engine)
• Starting/charging system
• Throttle body assembly
• Thw
• Vta
• Vta1
• Vta2
• Vv1+
• Vv1-
• Vv2+
• Vv2-