ENGINE PERFORMANCE – Lexus LS 430 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.3L

4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (1 of 6) for Lexus LS 430 2003:

• (at left kick panel) driver side j/b
• (behind upper center of dash)
• (right side of shift lever)
• +b1
• +bm
• A/c system
• A20
• Accelerator position sensor (behind left center of dash)
• Acmg
• Air suspension ecu (behind right side of dash)
• Anti-theft system (transponder key computer)
• Batt
• C12
• C15
• Combination meter
• Computer data lines system
• Cooling fans system
• Cpu
• Distance control ecu (behind right side of dash)
• Ec (left radiator side support)
• Elc
• Eng+
• Eng-
• Engine control module (ecm) (on left front of engine compt, in protective case)
• Ep1
• Ep2
• Epa
• Eptk
• Etam
• Fpr
• Htl2
• Htr2
• Igsw
• Imi
• Imo
• J/c 10
• J/c 12
• J/c 13 (behind upper center of dash)
• J/c 16, j/c 17
• J/c 16, j/c 17 (behind upper center of dash)
• J16
• J17
• Lcs
• Mil ind
• Mpx1
• Mpx2
• Mrel
• Neo
• Oxl2
• Oxr2
• Pnk
• Ptnk
• Pwr
• Red
• Rfc
• S10 trc+
• S11 sp1
• S12 mpx2
• S13
• Short connector s1, s2
• Sil
• Skid control ecu (behind left side of dash)
• Snow
• Speedo- meter
• Sta
• Stp
• Tach
• Tam
• Tbp
• Trc+
• Trc-
• Vapor pressure sensor (below right rear of vehicle)
• Vcc
• Vcp1
• Vcp2
• Vcpa
• Vpa
• Vpa1
• Vpa2
• Vptk
• Wfse

4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (2 of 6) for Lexus LS 430 2003:

• C/ opn relay
• Data link connector 3 (below left side of dash)
• Dome fuse 10a
• Driver side j/b (at left kick panel)
• Driver side j/b ecu (at left kick panel)
• E13
• E16
• E9 (engine harn, near engine room j/b 1)
• Ec (left radiator side support)
• Efi 1 fuse 30a
• Efi main relay
• Engine room r/b 1 (on left front of engine compt, behind headlight)
• Etcs fuse 10a
• F/ pmp relay
• Fuel pump & fuel sender (under left rear of vehicle)
• Fuel pump resistor (on left side of engine compt)
• Gauge fuse 7.5a
• Hot at all times
• Hot in on or start
• J/c 1, j/c 2 (near ecm, in protective case)
• J/c 23 (rearward of left rear fender- well)
• J/c 7 (below engine room j/b 1)
• Mpx-b2 fuse 7.5a
• Passenger side j/b (at right kick panel)
• Red
• Sil
• Stpi
• Stpo
• Tac
• Vsv (pressure switching valve) (below right rear of vehicle)
• Wfse

4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (3 of 6) for Lexus LS 430 2003:

• (at left kick panel) driver side j/b
• (below engine room j/b 1) j/c 7
• (engine harn, under ecu box)
• (generator) charging system
• (on right side of transmission) park/neutral position switch
• Acc
• Braided
• C14
• E10 (engine harn, near front of battery)
• Ee (side of right cyl head)
• Efi 2 fuse 7.5a
• Eknl
• Engine control module (ecm) (on left front of engine compt, in protective case)
• Engine room r/b 1 (on left front of engine compt, behind headlight)
• Eoil
• Eol1
• F14
• Fr ig fuse 7.5a
• Fusible link block (on right rear of engine compt)
• Hot at all times
• Hot in on or start
• Htl
• Ign fuse 7.5a
• Ignition switch
• Knkl
• Knkr
• Left knock sensor (on left side of engine)
• Lock
• Mol
• Nco+
• Nco-
• O/d direct clutch speed sensor (on left side of transmission)
• Oil
• Oxl1
• P/n
• Red
• Right knock sensor (on right side of engine)
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Sp2+
• Sp2-
• Sta fuse 7.5a
• Start
• Starter
• Starter relay
• Vehicle speed sensor (on transmission)

4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (4 of 6) for Lexus LS 430 2003:

• (above brake pedal, on bracket) stoplight switch
• (at right kick panel) passenger side j/b
• (below shift lever, in center console) shift lock control ecu
• (on left center of engine) engine oil level sensor
• (on right side of transmission) a/t indicator light switch (integral to park/neutral position switch)
• At4
• Atl
• C10
• C16
• Driver side j/b
• Driver side j/b (at left kick panel)
• Ef (side of left cyl head)
• Electronically controlled transmission solenoid (on left side of transmission)
• Hot at all times
• J/c 3, j/c 4 (near ecm, in protective case)
• J/c 8 (behind left end of dash)
• Nssd
• Nssl
• Red
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Stop fuse 5a

4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (5 of 6) for Lexus LS 430 2003:

• (at right kick panel) passenger side j/b ecu
• (dash harn, behind left side of instru- ment cluster)
• (engine harn, e12
• (engine harn, rear top of left cyl head)
• (near ecm, in protective case) j/c 5, j/c 6
• (right front of engine) right bank noise filter (ignition)
• Center rear top of engine
• Computer data lines system
• E12
• E13
• E2g
• Ef (side of left cyl head)
• Electronically controlled transmission pattern select switch
• Engine coolant temperature sensor (on front center of engine)
• Engine room r/b 1 (on left front of engine compt, behind head- light)
• 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 exhaust system, on left side of engine)
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, below vehicle)
• Heated oxygen sensor (bank 2 sensor 1) (on exhaust system, on right side of engine)
• Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, below vehicle)
• Hot in on or start
• Htl
• Htr
• Ik (right side of firewall)
• Inj fuse 10a
• Mass airflow meter (right side of engine compt, near air box)
• Mpx-
• Ox2
• Pwr
• Red
• Snow
• Tha
• Vsv (acis) (on right rear of engine)
• Vsv (canister closed valve) (on right side of engine compt)
• Vsv (evap) (on left rear of engine)

4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus LS 430 2003

List of elements for 4.3L, Engine Performance Wiring Diagram (6 of 6) for Lexus LS 430 2003:

• (engine harn, center top of right cyl head)
• (engine harn, center top rear of engine)
• (engine harn, rear top of left cyl head)
• (left rear of engine) left bank noise filter (ignition)
• (near ecm, in protective case) j/c 5, j/c 6
• A/c system
• Acis
• Braided
• Camshaft position sensor (on front of left cyl head)
• Ccv
• Crankshaft position sensor (on left front of engine)
• E01
• E02
• E03
• E11
• E12
• E13
• Ee (side of right cyl head)
• Ef (side of left cyl head)
• Eg2
• Ene
• Engine control module (ecm) (on left front of engine compt, in protective case)
• 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 front of left cyl head)
• Left vvt sensor (on left side of engine)
• Me01
• Mops
• Ne+
• Ne-
• Ocr+
• Ocr-
• Ocv+
• Ocv-
• Oil pressure switch (on lower left front of engine)
• Oxr1
• Prg
• Red
• Right camshaft timing oil control valve (on front of right cyl head)
• Right vvt sensor (on right side of engine)
• Tha
• Throttle control motor (on front of of engine, on throttle body)
• Throttle position sensor (on throttle body)
• Thw
• Vta
• Vta2
• Vvl+
• Vvl-
• Vvr+
• Vvr-