ENGINE PERFORMANCE – Lexus LS 400 1997 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus LS 400 1997

List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 4) for Lexus LS 400 1997:

• #10
• #20
• #30
• #40
• #50
• #60
• #70
• #80
• (eng harn, top left front of eng)
• (i/p harness, below right side of dash)
• +b2
• A/c
• A/c system
• Acc
• Acmg
• Air conditioning system
• Am2
• Anti- lock brakes system
• Anti-lock brake system
• B17
• Batt
• C2-
• Center j/b (behind combi- nation meter)
• Conn e11
• Conn e14
• Cruise control system
• Distri- buter
• E02
• Efi+
• Efi-
• Egr valve (left side of engine)
• Egr1
• Egr2
• Egr3
• Egr4
• Electronic suspension system
• Els
• Engine control module (behind glove box)
• Eo1
• Evap valve (left side of engine)
• Fuel
• Fuel pressure control valve (left side of engine)
• G112 (left rear side of cylinder head)
• Hot at all times
• Hot in start
• Hot in on or start
• Hot in park or head
• Htl2
• Htr2
• Idl1
• Idl2
• Idle air control valve (top center of engine)
• Ig2
• Igf
• Igf1
• Igf2
• Ign fuse 10a
• Igniter (right side of engine compartment)
• Ignition coil 1 (left front of engine)
• Ignition coil 2 (right front of engine)
• Ignition switch
• Igsw
• Igt
• Igt1
• Igt2
• Imi
• Imo
• Injectors
• Instrument panel j/b (rear of parking brake release lever)
• Instrument panel j/b (rear of parking brake release lever)
• Isc1
• Isc2
• Isc3
• Isc4
• J/c 4 (behind left side of dash)
• K11
• L10
• Lock
• Mrel
• Neo
• Noise filter (top left front of engine)
• Nsw
• Od1
• Oxl2
• Oxr2
• Park/neutral position switch (on transmission)
• Ptnk
• Pwr
• Pwrl
• Red
• Sdl
• Sln+
• Sln-
• Slu+
• Slu-
• Spdm
• Splice i4; (i/p harness, below right side of dash)
• Sta
• Start
• Starter fuse 7.5a
• Starting/ charging system
• Stop light switch (behind left side of dash)
• Stop lp fuse 25a
• Stop-s fuse 5.0a
• Tail fuse 10a
• Tpc
• Tra
• W/ trac. ctrl
• W/o trac. ctrl

4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus LS 400 1997

List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 4) for Lexus LS 400 1997:

• (i/p harness, below right side of dash)
• (i/p harness, center of dash)
• (lock-up)
• A/t oil temp. sensor
• Cir opn relay
• Cruise control ecu (behind right side of dash)
• E2g
• Ect
• Efi no.1 fuse 20a
• Efi no.2 fuse 10a
• Efi relay
• Egr temp. sensor (left side of engine)
• Electronic controlled transmission solenoid (on transmission)
• Engine coolant temp. sensor (right front of engine)
• Engine room j/b (left side of engine compartment)
• Fuel pump (in fuel tank)
• Fuel pump relay
• Fuel pump resistor (left front side of engine compartment)
• G100 (front side of left fender)
• G300 (under driver's seat)
• Heated oxygen sensor (bank 1, sensor 2) (in left exhaust, after twc)
• Heated oxygen sensor (bank 2, sensor 2) (in right exhaust, after twc)
• Hot at all times
• Htl2
• Htr2
• I3 (i/p harness, center of dash)
• J/c 11 (behind right side of dash)
• J/c 6 (behind left side of dash)
• Mass air flow meter (right side of engine compartment)
• Oxl2
• Oxr2
• Red
• Shield
• Tha
• Transponder key computer (right side of dash)
• Vsv vapor pressure sensor (behind left front headlight)

4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus LS 400 1997

List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 4) for Lexus LS 400 1997:

• (engine harness, near data link connector 1)
• (left front
• (right front
• (top center
• * **
• *:w/ air suspension **:w/o air suspension
• A/t indicator light switch (on trans- mission)
• A10
• A12
• A16
• A19
• A20
• A3 b2
• B14
• B16
• B21
• Camshaft
• Center j/b (behind combination meter)
• Center j/b (behind combination meter)
• Combination meter
• Control circuit
• Crankshaft
• Driver side j/b (left kick panel)
• E16
• E18
• Ect pwr
• Electronic controlled pattern select sw. (on console)
• Engine)
• Front of
• G201 (right i/p brace)
• Gauge fuse 10a
• Hot in on or start
• Idl2
• Instrument panel j/b (rear of parking brake release lever)
• J/c 10 (behind right side of dash)
• J/c 2 (behind right side of dash)
• J/c 4 (behind left side of dash)
• Knock
• Left cylinder head)
• Mal. ind.
• Mt3
• Mtd
• Norm
• Nssd
• Of engine)
• Position sensor (lower
• Position sensor 1
• Position sensor 2
• Pwr
• Red
• Sensor 1 (top left of engine)
• Sensor 2
• Shield
• Speedometer
• Splice i4: (i/p harness, below right side of dash)
• Sub throttle position sensor (w/traction control) (right side of engine)
• Tacho- meter
• Throttle valve motor driver (w/ traction control) (behind right side of dash)
• Transmission control switch (on console)
• Vta2

4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus LS 400 1997

List of elements for 4.0L, Engine Performance Wiring Diagrams (4 of 4) for Lexus LS 400 1997:

• (i/p harn, center of dash)
• (i/p harness, below right side of dash)
• +b1
• A12
• Air conditioning system
• Bat
• Conn e12
• Conn e13
• Data link connector 1 (left front of engine)
• Data link connector 3 (behind left side of dash)
• Driver side j/b (left kick panel)
• Engine control module (behind glove box)
• Eo3
• Evg
• Fpr
• G1+
• G1-
• G117 (rear side of right cylinder head)
• G2+
• G200 (behind combination meter)
• Heated oxygen sensor (bank 1, sensor 1) (in left exhaust manifold)
• Heated oxygen sensor (bank 2, sensor 1) (in right exhaust manifold)
• Hot at all times
• Ht1
• Ht2
• Htl1
• Htr1
• Instrument panel j/b (rear of parking brake release lever)
• J/c 1 (behind left side of dash)
• Knk1
• Knk2
• Nco+
• Nco-
• Ne-
• O/d direct clutch speed sensor (on transmission)
• Obd-1 fuse 7.5a
• Oil
• Oxl1
• Oxr1
• Pgr1
• Red
• Sdl
• Shield
• Sp2+
• Sp2-
• Te1
• Tha
• Thg
• Throttle position sensor (right side of engine)
• Thw
• Thwo
• Vapor pressure sensor (behind left headlight)
• Vehicle speed sensor (on transmission)
• Vta1
• Vta2
• W/ trac. ctrl.
• W/o trac. ctrl.