Lexus GS IV (2011-2015) computer data lines system Wiring diagrams

BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FAN ECU (ON COOLING FAN MOTOR) COOLING FAN MOTOR (BEHIND RADIATOR) M- COOLING FAN MOTOR 2 (BEHIND RADIATOR) M- E.F.I ENGINE COOLANT TEMPERATURE SENSOR (TOP RIGHT REAR OF ENGINE) ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B 1 (LEFT SIDE OF ENGINE COMPT) FAN 1 FUSE FAN 1 RELAY GRY WIRE HOT AT ALL TIMES ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) LEFT COWL SIDE J/B LH ECU-IG FUSE RED WIRE RELAY ENERGIZED RFC WHT WIRE WHT/BLK WIRE WHT/BLU WIRE

BLK WIRE BLU WIRE BRN WIRE CCS HITP GND NAVIGATION SYSTEM COMPUTER DATA LINES SYSTEM DRIVING SUPPORT ECU ASSEMBLY (LEFT END OF DASH) EFI MAIN FUSE EFI MAIN RELAY 1 EFI MAIN RELAY 2 ENERGIZED LUGGAGE ROOM J/B 1 (LEFT SIDE OF FUSE LUGGAGE COMPT) ENGINE ROOM J/B 1 (LEFT SIDE OF ENGINE COMPT) F/PMP FUSE FUEL PUMP CONTROL ECU (LEFT SIDE OF LUGGAGE COMPT) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES IGB J/C LEFT COWL SIDE J/B (LEFT END OF DASH) LH ECU-IG FUSE LT GRN WIRE MILLIMETER WAVE RADAR SENSOR (CENTER OF FRONT FASCIA) NETWORK GATEWAY ECU (RIGHT CENTER OF DASH) PBSW SPSW PNK WIRE PRE-COLLISION SYSTEM CANCEL SWITCH RED WIRE RELAY ENERGIZED SGND STP+ VIO WIRE WHT WIRE WHT/BLK WIRE WIPER/ WASH CCHG WASHER SYSTEM WIPER/ WASHER WNKR WNKL SYSTEM YEL WIRE

12 25 2 46 1 CANP CANN +B MREL BATT 24 25 PNK WIRE 4 1 MREL ACCELERATOR PEDAL SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) BLK WIRE BLU WIRE BLU/BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH CRUISE CONTROL SWITCH ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES J/C LEFT COWL SIDE J/B LT GRN WIRE M+ M- VCTA MODE NCA WIRE ON-OFF +RES -SET PNK WIRE POWER MANAGEMENT CONTROL ECU (RIGHT END OF DASH) RED WIRE RIGHT COWL SIDE PANEL J/B (RIGHT END OF DASH) RIGHT STEERING PAD SWITCH DISTANCE CONTROL SPIRAL CABLE SUB-ASSEMBLY (STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STOP FUSE STOP LIGHT SWITCH (BRAKE PEDAL BRACKET) THROTTLE BODY W/ MOTOR ASSEMBLY (TOP REAR OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 11 10 16 15 GND RL+ RL- FR+ FR- PNK WIRE 16 15 11 10 FL+ FL- RR+ RR- 8 9 CANL CANH BLK WIRE BLU WIRE BRN WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE HOT AT ALL TIMES IGCT 5 FUSE IGCT IGCT 1 RELAY FUSE J/C LEFT FRONT SPEED SENSOR (LEFT FRONT WHEEL ASSEMBLY) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL ASSEMBLY) LT GRN WIRE NCA WIRE PNK WIRE RED WIRE RELAY ENERGIZED RIGHT FRONT SPEED SENSOR (RIGHT FRONT WHEEL ASSEMBLY) SKID CONTROL ECU (LEFT REAR OF ENGINE COMPT) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 13 14 15 PNK WIRE 1 2 EC +B PNK WIRE 3 24 12 21 22 28 29 20 23 MREL SPD ST- ACCD ACCELERATOR PEDAL SENSOR (TOP OF ACCELERATOR PEDAL ASSEMBLY) BLK WIRE BLU WIRE BRN WIRE CANL CANH CCS CERTIFICATION ECU (RIGHT END OF DASH) COMPUTER DATA LINES SYSTEM DIODE (A/T SHIFT) EFI MAIN FUSE EFI MAIN RELAY ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B 2 (LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES J/C LT BLU WIRE LT GRN WIRE M+ M- VCTA NCA WIRE NETWORK GATEWAY ECU (BEHIND RIGHT CENTER OF DASH) PNK WIRE RELAY RH ECU-IG RIGHT COWL SIDE J/B (BEHIND RIGHT END OF DASH) RLY 1 RELAY ENERGIZED THROTTLE BODY ASSEMBLY W/ MOTOR (TOP OF ENGINE) VIO WIRE VPA EPA VCPA WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CAN I/F CANL CANH COMBINATION METER COMPUTER DATA LINES SYSTEM DRIVER SPEAKER DISPLAY ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE J/C LCD DRIVER LEFT FRONT SPEED SENSOR (LEFT FRONT WHEEL ASSEMBLY) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL ASSEMBLY) LT BLU WIRE LT GRN WIRE PARK/NEUTRAL POSITION SWITCH (TRANSMISSION) PNK WIRE RED WIRE RELAY ENERGIZED RIGHT FRONT SPEED SENSOR (RIGHT FRONT WHEEL ASSEMBLY) RIGHT REAR SPEED SENSOR (RIGHT REAR WHEEL ASSEMBLY) TELLTALES VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 RZG SRZG RZV TRQV 1 2 3 4 8 5 6 ESS CANL CANH 28 29 CANH CANL 9 10 CSS- CSS+ BLK WIRE BLU WIRE BLU/WHT WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CPU CAN I/F ENGINE ROOM R/B 2 (LEFT SIDE EPS FUSE EPS RELAY EPS-B FUSE EPS-IG FUSE GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) MPX-B FUSE INCS INSN LED TELLTALES DRIVER LT BLU WIRE LT GRN WIRE LUGGAGE ROOM J/B 1 (LEFT SIDE OF LUGGAGE COMPT) NCA WIRE OF ENGINE COMPT) OUCS OUSN PGND PIG PNK WIRE POWER STEERING ECU (RIGHT REAR CORNER OF ENGINE COMPT) POWER STEERING MOTOR (LEFT FRONT OF ENGINE) RED WIRE RED/BLK WIRE RED/BLU WIRE RELAY ENERGIZED RELAY ENERGIZED LEFT COWL SIDE J/B (BEHIND LEFT END OF DASH) LH ECU-IG FUSE RLY RZCS RZG RZSN RZSN RZCS INSN INCS OUSN OUCS RZV STEERING SENSOR (ON STEERING COLUMN) VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE YEL/BLK WIRE

3 4 CANH CANL A/C AMPLIFIER (CENTER OF DASH) BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DEICER FUSE DEICER RELAY ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) FDEF FRONT WINDOW DEICER SWITCH FRONT WIPER DEICER (WINDSHIELD GLASS) (BOTTOM OF WINDSHIELD) GRN WIRE HOT AT ALL TIMES LEFT COWL SIDE J/B LH-IG FUSE (LEFT END OF DASH) MULTI-MEDIA MODULE RECEIVER ASSEMBLY RED WIRE RELAY ENERGIZED WHT WIRE

6 3 8 7 1 BDR SIG CANP CANN GND BLK WIRE BLK/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM F/L DOOR FUSE GRN WIRE HOT AT ALL TIMES HOT AT ALL TIMES RIGHT COWL SIDE J/B (RIGHT SIDE OF DASH) FR DOOR FUSE LEFT COWL SIDE J/B (LEFT SIDE OF DASH) LEFT FRONT MULTIPLEX NETWORK DOOR ECU (IN LEFT FRONT DOOR) LEFT OUTER REAR VIEW MIRROR ASSEMBLY LH-IG FUSE LT GRN WIRE MIRROR HEATER MULTI-MEDIA MODULE RECEIVER ASSEMBLY REAR CANH WINDOW DEFOGGER SWITCH CANL RED WIRE RELAY ENERGIZED RH-IG FUSE RIGHT FRONT MULTIPLEX NETWORK DOOR ECU (IN RIGHT FRONT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE

3 4 CANH CANL A/C AMPLIFIER (CENTER OF DASH) BLK WIRE COMPUTER DATA LINES SYSTEM DEF ENGINE ROOM J/B 1 (LEFT SIDE OF ENGINE INTEGRATION RELAY COMPT) ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) GNDB HOT AT ALL TIMES LEFT COWL SIDE J/B LH-IG FUSE (LEFT END OF DASH) LT GRN WIRE MULTI-MEDIA MODULE RECEIVER ASSEMBLY NOISE FILTER (REAR WINDOW DEFOGGER) (LEFT ``C" PILLAR) P/I-B 1 FUSE RDEF REAR WINDOW DEFOGGER (BACK WINDOW GLASS) REAR WINDOW DEFOGGER SWITCH RED WIRE RELAY ENERGIZED WHT WIRE