Lexus GS II facelift (2000-2004) yel/blk Wiring diagrams

3.0L 4.3L BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BODY ECU 2 BRAIDED BRAKE FLUID LEVEL WARNING SWITCH (IN BRAKE FLUID RESERVOIR) BRN WIRE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ECU-IG FUSE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START IG (UPPER LEFT SIDE OF DASH) II (UPPER RIGHT SIDE OF DASH) JUNCTION CONNECTOR J/C 1 (UNDER ECU BOX) JUNCTION CONNECTOR J/C 10 (BEHIND LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 15 (BEHIND LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 3, J/C 4 (UNDER ECU BOX) JUNCTION CONNECTOR J/C 6 (LEFT KICK PANEL) JUNCTION CONNECTOR J/C 7 (LEFT KICK PANEL) JUNCTION CONNECTOR J/C 9 (BEHIND LEFT SIDE OF DASH) LEFT FRONT ABS SPEED SENSOR (LEFT FRONT WHEEL ASSEMBLY) LT GRN WIRE LT GRN/BLK WIRE MASTER CYLINDER PRESSURE SENSOR (AT LEFT REAR CORNER OF ENGINE COMPARTMENT) PARK/NEUTRAL POSITION SWITCH (ON TRANSMISSION) PNK WIRE PNK/BLK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RIGHT FRONT ABS SPEED SENSOR (RIGHT FRONT WHEEL ASSEMBLY) STEERING SENSOR (COMBINATION SWITCH) STOP FUSE STOPLIGHT SWITCH (ON BRAKE PEDAL BRACKET) VSC OFF SWITCH VSC WARNING BUZZER (BEHIND LEFT SIDE OF DASH) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

2 1 +B 4.3L ONLY 6 7 8 9 10 11 12 TRLY DBKL BECU A/C CONTROL ASSEMBLY (BEHIND CENTER OF DASH) AUTOMATIC LIGHT CONTROL SENSOR BLK/BLU WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE BLU/WHT WIRE BODY ECU NO. 2 (IN DRIVER SIDE J/B) BRN/BLK WIRE COMBINATION METER COMBINATION SWITCH (FOGLIGHT SWITCH) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ECU-IG FUSE ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) FOG RELAY FFGO GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY/RED WIRE HEAD LP RELAY DAYTIME RUNNING LIGHT RELAY (MAIN) CLOCK (IN MULTI-DISPLAY) HOT IN RUN OR START IG CLTB CLTS BLVL ILE STPI HEAD INTERIOR LIGHTS STOPLIGHT SWITCH COMBINATION SWITCH (HEADLIGHT SWITCH) JUNCTION CONNECTOR J/C 15 (LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 6 (LEFT KICK PANEL) JUNCTION CONNECTOR J/C 9 (BEHIND LEFT SIDE OF DASH) LT GRN/BLK WIRE MPX MULTI-DISPLAY NOT USED GRD CLTE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE REMOTE CONTROL MIRROR SWITCH STEERING PAD SWITCH (IN COMBINATION SWITCH) TAIL AUTO LF KSW MIRE MIRS MIRB HRLY ALTL ACAN TAIL RELAY LEFT BUCKLE SWITCH TILT, TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) UNLOCK WARNING SWITCH (BEHIND LEFT SIDE OF DASH) VIO WIRE VIO/RED WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 HORN TR+ 1 2 3 IG SH HR BSUB PWS 10 11 12 NOT USED GRD NOT USED 3 18 9 CPUB 7 8 NOT USED BECU BLK/BLU WIRE BLK/RED WIRE BLU WIRE BLU/ORG WIRE BLU/YEL WIRE BODY ECU NO. 1 (IN PASSENGER SIDE J/B) BZR CPUB DATA LINK CONNECTOR 3 DIODE (LUGGAGE COMPARTMENT DOOR OPEN DETECT SWITCH) DRIVER DOOR ECU (IN DRIVER'S DOOR) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE HOOD COURTESY SWITCH FRONT PASSENGER DOOR ECU (IN RIGHT FRONT DOOR) FUSE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HAZARD SWITCH HCTY LGCY HORN RELAY LUGGAGE COMPARTMENT DOOR COURTESY SWITCH AND OPENER MOTOR HOT AT ALL TIMES HOT IN ACC OR RUN II (UPPER RIGHT SIDE OF DASH) JUNCTION CONNECTOR J/C 13 (LEFT SIDE OF DASH) LEFT REAR DOOR ECU (IN LEFT REAR DOOR LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MIR RELAY DFG MOON ROOF CONTROL ECU ORG/ WIRE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PKB IND PWR SNOW HAZ PNK WIRE PNK/BLK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER SEAT ECU (UNDER DRIVER'S SEAT) RADIO NO. 2 FUSE RED/WHT WIRE RED/YEL WIRE RIGHT REAR DOOR ECU (IN RIGHT REAR DOOR) RSSI RCO RDA RET SECURITY INDICATOR (RHEOSTAT) TKUL TSW PBKL VIO WIRE VIO/GRN WIRE VIO/YEL WIRE W/ MEMORY SEAT W/O MEMORY SEAT WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE WIRELESS DOOR LOCK BUZZER WIRELESS DOOR LOCK BUZZER YEL/BLK WIRE

+B +BM MREL STI- IGSW 1 2 4 5 6 7 13 14 17 EOM EC BATT 3 4 13 20 26 27 31 32 33 34 35 TC STP A/T INDICATOR LIGHT SWITCH ACCEL PEDAL POSITION SENSOR (BEHIND LEFT SIDE OF DASH) BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND DRIVER SIDE J/B DRIVER SIDE JUNCTION BLOCK EC (REAR OF RIGHT CYLINDER HEAD) ED (REAR OF LEFT CYLINDER HEAD) EE (UNDER ABS/TRAC/ VSC ACTUATOR) EFI RELAY ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT, IN ECU BOX) ENGINE ROOM RELAY BLOCK 1 EPTK VPTK CCS ETA VC ETCS FUSE EFI FUSE GAUGE FUSE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START IGN FUSE II (UPPER RIGHT SIDE OF DASH) J/C 11 (LEFT SIDE OF DASH) J/C 14 (BEHIND LEFT SIDE OF DASH) J/C 17 (BEHIND RIGHT SIDE OF DASH) J/C 26 (IN ECU BOX) J/C 27 (BEHIND LEFT KICK PANEL) J/C 3 (IN ECU BOX) J/C 4 J/C 4 (IN ECU BOX) J/C 5 (IN ENGINE ROOM RELAY BLOCK 2) J/C 7 (BEHIND LEFT KICK PANEL) J/C 9 (BEHIND LEFT SIDE OF DASH) M- M+ MAIN ORG/ WIRE PNK/BLK WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE RES+ SET/ COAST SHIELD STOP FUSE STOPLIGHT SWITCH (ON BRAKE PEDAL BRACKET) THROTTLE CONTROL MOTOR (ON THROTTLE BODY) THROTTLE POSITION SENSOR (ON THROTTLE BODY) VIO WIRE VIO/YEL WIRE VPA EPA VCPA WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLU/BLK WIRE COMBINATION METER DAYTIME RUNNING LIGHT RELAY (MAIN) (BEHIND RIGHT END OF DASH) DAYTIME RUNNING LIGHT RELAY 3, 4 (AT LEFT FRONT CORNER OF ENGINE COMPT) DAYTIME RUNNING LIGHT RESISTOR (LEFT STRUT TOWER) DIMMER DRL 2 RELAY DRL 1 FUSE DRL 2 FUSE EB (LEFT FRONT STRUT TOWER) EE (RIGHT FRONT STRUT TOWER) ENGINE ROOM R/B 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ENGINE ROOM R/B 3 (ON LEFT SIDE OF ENGINE COMPT, FRONT OF STRUT TOWER) ENGINE ROOM RELAY BLOCK 3 (ON LEFT SIDE OF ENGINE COMPT, FRONT OF STRUT TOWER) FUSE HEAD IND (USA) HEAD LP RELAY HEADLIGHTS SYSTEM (HEADLIGHT BEAM LEVEL CONTROL ECU) HIGH BEAM IND HOT AT ALL TIMES J/C 27 (LEFT KICK PANEL) JUNCTION CONNECTOR J/C 11 (LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 14 (BEHIND LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 15 (BEHIND LEFT SIDE OF DASH) JUNCTION CONNECTOR J/C 18 (RIGHT KICK PANEL) LEFT HIGH BEAM HEADLIGHT LEFT LOW BEAM HEADLIGHT (EX HID) LEFT HEADLIGHT CONTROL ECU (HID) LEFT LOWER HEAD FUSE LEFT UPPER HEAD FUSE MAIN FUSE PARKING BRAKE SWITCH (BEHIND LEFT SIDE OF DASH) PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT HIGH BEAM HEADLIGHT RIGHT LOW BEAM HEADLIGHT (EX HID) RIGHT HEADLIGHT CONTROL ECU (HID) RIGHT LOWER HEAD FUSE RIGHT UPPER HEAD FUSE SHORT CONNECTOR (CANADA) (LEFT STRUT TOWER) WHT RED/ WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 ECUE IG VC GND ECUB 1 2 3 4 5 6 7 8 9 10 RCL- RCL+ SLD- SLD+ LFT- LFT+ GND +B FRV- FRV+ 1 2 3 4 5 6 POWER TILT MOTOR BJ (UNDER LEFT C-PILLAR) BLK WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM D P/SEAT FUSE DOWN DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) DRIVER'S SEAT FRONT VERTICAL MOTOR DRIVER'S SEAT LUMBAR SUPPORT CONTROL MOTOR DRIVER'S SEAT REAR VERTICAL MOTOR DRIVER'S SEAT RECLINING MOTOR DRIVER'S SEAT SLIDING MOTOR FRONT FRONT VERTICAL CONTROL SENSOR FUSE GRN/WHT WIRE HOT AT ALL TIMES J/C 18 (RIGHT KICK PANEL) J/C 20 (ABOVE LEFT REAR WHEELWELL) J/C 23 (BELOW DRIVER'S SEAT) J/C 6 (LEFT KICK PANEL) LT GRN WIRE LT GRN/RED WIRE LUMBAR SUPPORT CONTROL SWITCH MSW ORG/ WIRE P-P/SEAT FUSE PASSENGER SIDE J/B (BEHIND RIGHT KICK PANEL) POWER SEAT CONTROL SWITCH POWER SEAT ECU (UNDER DRIVER'S SEAT) POWER TELESCOPIC MOTOR RCLF RCLR REAR REAR VERTICAL CONTROL SENSOR RECLINE CONTROL SENSOR RED/BLU WIRE SGND SSRS SLDF SLDR LUP LDWN FUP SLIDE CONTROL SENSOR SSFV SSRL SSRR PVCC FDWN IG SYSB TEL LNG TILT UP TEL SHRT TILT DOWN TILT, TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) TILT, TELESCOPIC SWITCH TIM- TIM+ TEM- TEM+ VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

+B +BM STI- A/C SYSTEM A/T SHIFT MAIN SWITCH (INTEGRAL TO COMBINATION SWITCH) ABS, TRAC, VSC ECU (BEHIND LEFT SIDE OF DASH) ACCELERATOR PEDAL POSITION SENSOR (ON RIGHT REAR SIDE OF ENGINE) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM (SECURITY INDICATOR) BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BRAIDED BRAIDED BRAIDED 18 19 20 21 22 23 BRN WIRE CODE COMBINATION METER COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) EB (LEFT FRONT STRUT TOWER) ECT PWR. ECT SNOW ENG ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE IMLD CODE J/C 9 (BEHIND LEFT SIDE OF DASH) KSW STA MREL FPC DI ACMG IGSW TAM LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MIL IND NEO NEO TBP PNK TRC+ ENG+ WIRE PNK WIRE PNK/BLK WIRE PRE SIL PTNK RED WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RXCK SFTD SFTU SIL TACHOMETER TC STP SFTD SFTU TRC+ TRC- ENG- CCS TXCT VAPOR PRESSURE SENSOR (UNDER LEFT REAR OF VEHICLE) VCC VIO WIRE VIO/YEL WIRE WFSE TXCT RXCK PTNK WHT WIRE WHT/BLK WIRE WHT/RED WIRE WSFE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

+IG BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/YEL WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAIDED BRAIDED 18 19 20 21 22 23 BRAIDED BRAIDED 19 20 BRN WIRE DATA LINK CONNECTOR 1 (BEHIND ECU BOX) DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) EE (UNDER ABS, TRAC, VSC ACTUATOR) EFI FUSE EFI RELAY ENGINE ROOM R/B 1 (ON RIGHT SIDE OF ENGINE COMPT, BEHIND STRUT TOWER) ETCS FUSE FP- FPC FUEL PUMP CONTROL ECU (AT LEFT SIDE OF LUGGAGE COMPT) FUEL PUMP, SENDER (IN FUEL TANK) GAUGE FUSE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ON OR START J/C 11 (BEHIND LEFT SIDE OF DASH) J/C 14 (BEHIND LEFT SIDE OF DASH) J/C 20 (ABOVE LEFT REAR WHEELWELL) J/C 3, J/C 4 (IN ECU BOX) PNK/BLK WIRE RED WIRE RED/BLU WIRE RED/YEL WIRE STOP FUSE STOPLIGHT SWITCH VIO/WHT WIRE VIO/YEL WIRE VSV (VAPOR PRESSURE SENSOR) (UNDER LEFT REAR OF VEHICLE) WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/BLU WIRE BLK/ORG WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRAIDED BRAIDED BRAIDED 19 20 BRAIDED BRAIDED 25 26 BRAIDED BRAIDED 28 29 BRN WIRE DRIVER SIDE J/B (BEHIND LEFT KICK PANEL) ED (REAR SIDE OF INTAKE MANIFOLD) ENGINE CONTROL MODULE (ECM) (AT LEFT SIDE OF ENGINE COMPT, IN ECU BOX) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN FUSE IGNITION SWITCH KNOCK SENSOR 1 (ON LEFT FRONT OF ENGINE) KNOCK SENSOR 2 (ON LEFT SIDE OF ENGINE) LOCK MOL NCO O/D DIRECT CLUTCH SPEED SENSOR (ON TRANSMISSION) OIL P/N PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SLN- SLT- SLU+ STARTER FUSE STARTING SYSTEM (STARTER RELAY) VEHICLE SPEED SENSOR (ON TRANSMISSION) WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

ATL BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/YEL WIRE BRAIDED BRAIDED BRAIDED 20 21 BRAIDED BRAIDED 22 23 BRAIDED BRAIDED 24 25 BRAIDED BRAIDED 25 26 BRAIDED BRAIDED 28 29 BRN WIRE EC (FRONT SIDE OF INTAKE MANIFOLD) ED (REAR SIDE OF INTAKE MANIFOLD) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (IN TRANSMISSION) GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE J/C 2 (IN ECU BOX) J/C 9 (BEHIND LEFT SIDE OF DASH) J/C 3, J/C 4 (IN ECU BOX) LT GRN WIRE NSSD NSSL OIL ORG/ WIRE PNK WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE SLN- SLN+ SLU+ SLT- SLU+ TEMP LEVEL VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE