ENGINE PERFORMANCE – Lexus GS 400 1998 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus GS 400 1998

List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus GS 400 1998:

• (engine harn, in ecu box)
• (engine harn, left side of engine)
• (engine harn, right side of engine)
• (engine harn, top rear of engine)
• (left cylinder head)
• (left cylinder head) g112
• (right cylinder head)
• A braided
• Acis
• Braided
• Camshaft position sensor (left front of engine)
• Cl-
• Conn e2
• Conn e3
• Crankshaft position sensor (left front of engine)
• E01
• E02
• E03
• E1 (engine harness, top rear of engine)
• E2g
• Engine control module (left side of engine compt, in ecu box)
• Evg
• G112
• G112 (left cylinder head)
• G120
• Ge01
• Htl
• Htr
• 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
• Igt1
• Igt2
• Igt3
• Igt4
• Igt5
• Igt6
• Igt7
• Igt8
• Injector 1
• Injector 2
• Injector 3
• Injector 4
• Injector 5
• Injector 6
• Injector 7
• Injector 8
• J/c 2 (in ecu box)
• Knkl
• Knkr
• Knock sensor 1 (top center of engine)
• Knock sensor 2 (top center of engine)
• Left camshaft timing oil control valve (top left side of engine)
• Left vvt sensor (top left side of engine)
• Mass airflow meter (in air intake duct)
• Me01
• Ne+
• Ne-
• Noise filter (top left rear of engine)
• Ocv+
• Ocv-
• Oxl1
• Oxr1
• Prg
• Red
• Right vvt sensor (top right side of engine)
• Tha
• Throttle control motor (on throttle body)
• Thw
• Vpa
• Vpa2
• Vsv (acis) (top right rear of engine)
• Vsv (evap) (top rear of engine)
• Vta
• Vta2
• Vvl+
• Vvl-
• Vvr+
• Vvr-

4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus GS 400 1998

List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus GS 400 1998:

• (1999)
• (body harness, forward of left rear wheelwell)
• (engine harn, e1
• (engine harn, top left side of engine)
• (engine harn, under ecu box) e3
• (left side of dash)
• A j/c 4
• Acc
• Accel position sensor (top center of engine)
• Am2
• Braided
• Driver side junction block
• Efi fuse 25a
• Efi relay
• Engine coolant temperature sensor (top right side of engine)
• Engine room relay block 1
• F10
• Fp+
• Fp-
• Fpc
• Fuel pump (in fuel tank)
• Fuel pump control ecu (left side of luggage compartment)
• G104 (left rear corner of engine compt)
• G112 (left cylinder head)
• Heated oxygen sensor (bank 1 sensor 1) (on left side of engine, in exhaust manifold)
• Heated oxygen sensor (bank 2 sensor 1) (on right side of engine, in exhaust manifold)
• Hot at all times
• Ig2
• Ign fuse 5a
• Ignition switch
• J/c 14 (behind left side of dash)
• J/c 15 (behind left side of dash)
• J/c 2 (behind right side of dash)
• J/c 20 (left quarter panel)
• J/c 3
• J/c 5 (in engine room relay block 2)
• Left side of engine)
• Lock
• P/n
• Park/neutral position switch (on transaxle)
• St2
• Start
• Starter fuse 5a
• Starting/ charging system
• Throttle position sensor (on throttle body)

4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus GS 400 1998

List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus GS 400 1998:

• (behind center of dash) a/c control assembly
• (behind left side of dash)
• (behind right side of dash)
• (engine harn, top rear of engine)
• (in ecu box)
• (left cylinder head)
• (left kick panel) j/c 6
• (under center console) shift lock control ecu
• A/t indicator light switch (integral to park/neutral position switch) (on transmission)
• A/t p
• At4
• Atl
• B j/c 4
• Body ecu 1 (in passenger side junction block)
• Braided
• Braided f
• C12
• Combination meter
• Cpu
• Driver side junction block
• E braided
• E j/c 4
• E1 (engine harn, top rear of engine)
• Ect pwr
• Ect snow
• Electronically controlled transmission pattern select switch
• Engine oil level sensor (right oil level front of engine)
• Except navigation
• G112
• G120 (right cylinder head)
• G201
• Gauge fuse 10a
• H12
• Heated oxygen sensor (bank 1 sensor 2) (on exhaust system, near catalytic converter)
• Heated oxygen sensor (bank 2 sensor 2) (on exhaust system, near catalytic converter)
• Hot at all times
• Hot in on or start
• J/c 1 (in ecu box)
• J/c 11 (behind left side of dash)
• J/c 17 (behind right side of dash)
• J/c 3
• J/c 3 (in ecu box)
• J/c 4
• J/c 7 (behind left kick panel)
• J/c 9 (behind left side of dash)
• J/c 9 (left side of dash)
• Malfunction indicator light
• Mpx+
• Mpx-
• Mpx1
• Mpx2
• Multi- display
• Navigation
• Nssd
• Nssl
• Obd fuse 7.5a
• Oil temp
• Ptnk
• Pwr
• Red
• Snow
• Stop fuse 15a
• Stoplight switch (on brake pedal bracket)
• Tilt & telescopic ecu (left side of dash)
• Vapor pressure sensor (under left rear of vehicle)
• Vcc

4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus GS 400 1998

List of elements for 4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus GS 400 1998:

• (1999)
• (behind ecu box)
• (behind left side of dash) data link connector 3
• (behind right side of dash)
• (left front fender) g100
• (on transmission) o/d direct clutch speed sensor
• (or pnk) (or pnk)
• +bm
• A/t shift main switch
• Abs & trac & vsc ecu (behind left side of dash)
• Acmg
• Air conditioning system
• Bat
• Batt
• Braided
• Braided braided
• Ccs
• Cl+
• Code
• Conn e4
• Conn e5
• Conn e6
• Conn e7
• Cruise control system
• Data link connector 1
• Electronically controlled transmission solenoid (in transmission)
• Eng+
• Eng-
• Engine control module (left side of engine compt, in ecu box)
• Engine room relay block 1
• Eom
• Etcs fuse 15a
• F13
• Fpc
• G112 (left cylinder head)
• G201
• G201 (behind right side of dash)
• Generator
• Grd
• Hot at all times
• Htr2
• Igsw
• Imld
• J/c 10 (behind left side of dash)
• J/c 10 (left side of dash)
• J/c 2 (in ecu box)
• J/c 6 (left kick panel)
• J/c 9 (behind left side of dash)
• Ksw
• Lcki
• Left camshaft timing oil control valve (top left side of eng)
• Mol
• Mops
• Mpx1
• Mpx2
• Mrel
• Nco+
• Nco-
• Neo
• Ocr-
• Ocv-
• Oil
• Oil pressure switch (left front side of engine)
• Ox1
• Ox1b
• Oxl2
• Oxr2
• Passenger side junction block
• Pnk
• Pre
• Ptnk
• Red
• Rxck
• Security indicator
• Sftd
• Sftu
• Sil
• Sln+
• Sln-
• Slt+
• Slt-
• Slu+
• Slu-
• Sp2+
• Sp2-
• Sta
• Sti-
• Stp
• Tach
• Tachometer
• Tam
• Tpc
• Transponder key amplifier (behind left side of dash)
• Trc+
• Trc-
• Txct
• Unlock warning switch (behind left side of dash)
• Vehicle speed sensor (on transmission)
• Vsv (vapor pressure sensor) (under left rear of vehicle)