Lexus GS IV facelift (2015-2020) integration relay Wiring diagrams

+BO ALT BLK WIRE BLU WIRE BRAKE FLUID LEVEL WARNING SWITCH (BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY) BRN WIRE CAN I/F CCS- COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ENGINE ROOM J/B 1 ASSEMBLY ENGINE ROOM J/B 2 ASSEMBLY FRONT STEERING CONTROL ECU GNDB GRN WIRE GRY WIRE HOT AT ALL TIMES INTEGRATION RELAY LED DRIVER LEFT COWL SIDE J/B LT GRN WIRE P/I ALT FUSE PNK +B WIRE PNK W/ VGRS WIRE PNK WIRE RED WIRE SPEAKER STEERING SENSOR STOP STOP FUSE STOP LIGHT SWITCH ASSEMBLY (TOP OF BRAKE PEDAL ASSEMBLY) TELLTALES VIO WIRE W/O VGRS W/O VGRS W/ VGRS WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YAW RATE SENSOR YEL WIRE

BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH WIRE DISTANCE CONTROL DRIVING SUPPORT ECU ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY ENGINE ROOM R/B 2 ASSEMBLY ETCS FUSE GAUGE FUSE GNDA (-) GRN WIRE HOT AT ALL TIMES HOT W/ IGB INTEGRATION RELAY LEFT COWL SIDE J/B LH-IG FUSE LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B ASSEMBLY MILLIMETER WAVE RADAR SENSOR ASSEMBLY PNK BZ WIRE PNK WIRE RED WIRE RELAY 1 ENERGIZED RIGHT STEERING PAD SWITCH SGND SKID CONTROL BUZZER SPIRAL CABLE SUB-ASSEMBLY SPSW STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STP+ WHT WIRE WHT/BLK WIRE YEL WIRE

+BM ACCELERATOR PEDAL SENSOR ASSEMBLY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM EFI MAIN FUSE EFI MAIN RELAY ENGINE CONTROLS SYSTEM ENGINE ROOM J/B 2 ASSEMBLY GNDA (-) GRN WIRE GRY WIRE HOT AT ALL TIMES INTEGRATION RELAY LT BLU WIRE LT GRN WIRE PNK WIRE RED WIRE THROTTLE BODY W/ MOTOR ASSEMBLY (TOP FRONT OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

A/C AMPLIFIER ASSEMBLY BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DEC DECL DECR ENGINE ROOM J/B 2 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY FDEF FRONT WINDOW DEICER SWITCH FRONT WIPER DEICER (WINDSHIELD GLASS) GNDB GRN WIRE HOT AT ALL TIMES INTEGRATION RELAY LEFT COWL SIDE J/B LH-IG FUSE LT GRN WIRE P/I-B 1 FUSE RADIO RECEIVER ASSEMBLY RED WIRE RELAY ENERGIZED RH ECU-IG FUSE RIGHT COWL SIDE J/B WHT WIRE WHT/BLK WIRE YEL WIRE

2.0L TURBO 4WD 2WD 3.5L 2.0L TURBO A/C COMP RELAY A/F RELAY BLK WIRE BLOWER MOTOR SUB ASSEMBLY W/ FAN BRAKE ACTUATOR ASSEMBLY BRAKE FLUID LEVEL WARNING SWITCH (BRAKE MASTER CYLINDER RESERVOIR ASSEMBLY) BRAKE PEDAL LOAD SENSING SWITCH BRN WIRE COOLER COMPRESSOR ASSEMBLY ENGINE ROOM J/B 2 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY ENGINE ROOM R/B 2 ASSEMBLY ENGINE ROOM R/B 3 FAN RELAY 1 FAN RELAY 2 FRONT STEERING CONTROL ECU FRONT WIPER DEICER (WINDSHIELD GLASS) HEADLIGHT CLEANER MOTOR, PUMP ASSEMBLY INTEGRATION RELAY KICK DOWN SWITCH ASSEMBLY LEFT FRONT ABSORBER CONTROL ACTUATOR LEVEL WARNING SWITCH ASSEMBLY POWER STEERING ECU ASSEMBLY RIGHT END OF DASH) RIGHT FRONT ABSORBER CONTROL ACTUATOR ST RELAY STOP LIGHT SWITCH ASSEMBLY VACUUM WARNING SWITCH ASSEMBLY WHT/BLK WIRE WINDSHIELD WIPER MOTOR ASSEMBLY WIRELESS DOOR LOCK BUZZER WIRING HARNESS CONDENSER ASSEMBLY 1

BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY BLK WIRE CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY DOOR LOCK ENGINE ROOM J/B 2 ASSEMBLY GNDA (-) GRN WIRE INSTRUMENT PANEL REGISTER ASSEMBLY 1 INTEGRATION RELAY LT GRN WIRE MIRROR ADJUST SWITCH IND MIRROR R/L MIRROR RETRACT PNK WIRE PNL PNLS POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY RADIO RECEIVER ASSEMBLY REAR CONTROL SWITCH RED WIRE REFRESHING SEAT SWITCH RIGHT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY SELECT SWITCH IND SWITCH IND TAIL UNLOCK SWITCH IND VIO WIRE WHT WIRE WHT/BLK WIRE WINDOW LOCK

3 4 ILL+ ALT ANTI-LOCK BRAKES SYSTEM BLK WIRE BLU WIRE DECL DECR DEF DEFOGGER SYSTEM DRL DRLL DRLR ENGINE ROOM J/B 1 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY FFG FFGL FFGR GNDA (-) GNDB GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HLHL HLHR HLHS HOT AT ALL TIMES ILL (-) B+ IND 14 15 INTEGRATION CONTROL, PANEL ASSEMBLY INTEGRATION RELAY LEFT COWL SIDE J/B LH ECU-IG FUSE LH-IG FUSE LT GRN WIRE MAIN BODY ECU NAVIGATION SYSTEM P/I DC/DC FUSE P/I-B 1 FUSE PANL PNK WIRE PNL PNLS POWER WINDOWS SYSTEM RDEF RED WIRE RELAY 1 ENERGIZED RSSH SEATS SYSTEM SHAD STOP TAIL TLP VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

A/C AMPLIFIER ASSEMBLY BLK WIRE COMPUTER DATA LINES SYSTEM DEF ENGINE ROOM J/B 1 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY GNDB HOT AT ALL TIMES INTEGRATION RELAY LEFT "C" PILLAR) LEFT COWL SIDE J/B LH-IG FUSE MULTI-MEDIA MODULE RECEIVER ASSEMBLY NOISE FILTER (REAR WINDOW DEFOGGER) P/I-B 1 FUSE RDEF REAR WINDOW DEFOGGER (BACK WINDOW GLASS) REAR WINDOW DEFOGGER SWITCH RED WIRE RELAY 1 ENERGIZED VIO WIRE WHT WIRE

ALT BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DIODE (A/T SHIFT) ECM (ENGINE CONTROL MODULE) ENGINE ROOM J/B 1 ASSEMBLY ENGINE ROOM J/B 2 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY FRONT CONTROL SWITCH GNDA (-) GNDB GRN WIRE GRY WIRE HOT AT ALL TIMES INTEGRATION RELAY KA (LEFT KICK PANEL) LEFT COWL SIDE J/B LH J/B-B FUSE LH-IG FUSE MAIN BODY ECU MPX-B FUSE P/I ALT FUSE PARK/ NEUTRAL POSITION SWITCH ASSEMBLY PNK WIRE REAR CONTROL SWITCH REAR SUNSHADE RELAY (REAR WINDOW SHADE ASSEMBLY) REAR SUNSHADE SWITCH REAR SUNSHADE SWITCH ASSEMBLY RED WIRE RELAY 1 ENERGIZED RELAY 2 ENERGIZED REV RIGHT COWL SIDE J/B RSSH RSW SHAD WHT WIRE WHT/BLK WIRE YEL WIRE

2.0L TURBO 3.5L BLK WIRE BLU WIRE BRN WIRE ENGINE ROOM J/B 2 ASSEMBLY ENGINE ROOM R/B 1 ASSEMBLY GNDA (-) GNDB GRN WIRE GRY WIRE HOT AT ALL TIMES INTEGRATION RELAY LEFT COWL SIDE J/B LT BLU WIRE P/I-B 1 FUSE PNK WIRE RED WIRE RELAY ENERGIZED RIGHT COWL SIDE J/B STOP FUSE STOP LIGHT SWITCH ASSEMBLY (TOP OF BRAKE PEDAL ASSEMBLY) THROTTLE BODY ASSEMBLY W/ MOTOR (TOP RIGHT REAR OF ENGINE) THROTTLE BODY W/ MOTOR ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE