Lexus GS IV (2011-2015) main body ecu (left end of dash) Wiring diagrams

1 2 3 4 5 6 7 8 9 10 SMBL SMBR 31 32 ALTB IG 4 2 FRCY FLCY 6 29 RCTY HEAD BLK WIRE BLU WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR 3 (UNDER LEFT SIDE OF DASH) DISPLAY DRIVER ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRY WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT LEVELING, SWIVEL MOTOR HEADLIGHT SWIVEL ECU ASSEMBLY (BEHIND LEFT KICK PANEL) HEADLIGHT SWIVEL MAIN SWITCH HOT AT ALL TIMES INIT INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LCTY LED DRIVER LEFT COWL SIDE J/B LEFT HEADLIGHT ASSEMBLY LEFT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (LEFT REAR WHEELWELL) LH E LH ECU-IG FUSE LH J/B-B FUSE LH-IG FUSE LHM+ LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE LVL MAIN BODY ECU (LEFT END OF DASH) MPX-B FUSE MSW OFF AUTO TAIL HEAD PNK RH+ CANH CANL IGS IG COMPUTER DATA LINES SYSTEM WIRE PNK WIRE RED WIRE RELAY ENERGIZED RH E RHM + RIGHT HEADLIGHT ASSEMBLY SBR SHRL PNK WIRE SGR SMBL SMBR SMGL SMGR SML SML LH+ SMR TELLTALES VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 RCYL LSWR 10-WAY SEAT POSITION MEMORY 18-WAY SEAT POSITION MEMORY 28 29 30 31 32 HORN 6 5 CANN CANP 6 5 CANP CANN 7 8 CANN CANP 9 8 7 8 CANN CANP BECU ALTB IG BLK WIRE BLU WIRE DOMR LCTY LCYL PANL FLLK DOOR LOCKS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) FFGO TRLY HRLY FRCY LSWL TR+ ACTG ACT- ACT+ ACTD GRN WIRE GRY WIRE HCTY BZR DIM ACAN GSW DRL HOT AT ALL TIMES ILE FLCY 2 3 4 5 6 7 8 9 10 INTEGRATION CONTROL, PANEL CIRCUIT TRUNK, TAILGATE, FUEL DOORS SYSTEM INTERIOR LIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT MULTIPLEX NETWORK DOOR ECU (IN LEFT FRONT DOOR) LH J/B-B FUSE LH-IG FUSE LT BLU WIRE LT GRN WIRE LUGGAGE CLOSER MOTOR MAIN BODY ECU (LEFT END OF DASH) MPX-B FUSE MULTIPLEX TILT, TELESCOPIC ECU (ON STEERING COLUMN) NAVIGATION SYSTEM PNK PNK WIRE PNK WIRE POWER WINDOWS, MEMORY SYSTEMS RED WIRE RELAY ENERGIZED SSCL TCYL TMSW TRUNK, TAILGATE, FUEL DOORS SYSTEM 66 67 TRUNK, TAILGATE, FUEL DOORS SYSTEMS TSW CANP CANN VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

13 26 CANH CANL 20 21 22 23 24 25 26 27 28 FSPT RLEN 7 8 CANN CANP 9 8 CANN CANP BLK WIRE BLU WIRE CANL CANH REV RDA DOOR LOCKS, ANTI-THEFT SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HEAD TAIL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT, INTERIOR LIGHTS SYSTEMS HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS INTEGRATION CONTROL, PANEL CIRCUIT JUNCTION KOFF SFTP PRG HU RCTY LSFL HF LLEW LSFR LGCY CLTB CLTS CLTE TKUL PNK WIRE LT BLU WIRE LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MULTI-MEDIA MODULE RECEIVER ASSEMBLY NAVIGATION SYSTEM PARKING BRAKE ECU (LEFT SIDE OF LUGGAGE COMPT) PNK WIRE POWER WINDOWS SYSTEM WARNING, DOOR LOCKS, ANTI-THEFT SYSTEMS RED WIRE RIGHT END OF DASH) RIGHT FRONT MULTIPLEX NETWORK DOOR ECU (IN RIGHT FRONT DOOR) RIGHT POSITION CONTROL ECU (UNDER FRONT PASSENGER'S SEAT) WARNING, DOOR LOCKS, ANTI-THEFT SYSTEMS WHT WIRE WHT/BLK WIRE YEL WIRE

12 4 3 2 22 3 TCYL LCYL LCTY 14 13 CANH CANL COMPUTER DATA LINES SYSTEM 32 31 30 IG ALTB BECU 4 2 FRCY FLCY AGND BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM DOME CUT RELAY DOOR CONTROL SWITCH FSPT GRN WIRE GRY WIRE HOT AT ALL TIMES HOT W/ LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT FRONT DOOR COURTESY LIGHT LEFT REAR DOOR COURTESY LIGHT LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LEFT "C" PILLAR) LH J/B-B FUSE LH-IG FUSE LT BLU WIRE LT GRN WIRE LUGGAGE COMPARTMENT LIGHT ASSEMBLY 1 MAIN BODY ECU (LEFT END OF DASH) NOISE FILTER (CENTER STOP LIGHT, LUGGAGE COMPARTMENT LIGHT) (LEFT "C" PILLAR) ORG/ WIRE PNK LGCY WIRE PNK PNK PNK PNK WIRE PNK WIRE POWER SWITCH RCTY RCYL RED WIRE RELAY ENERGIZED RIGHT REAR DOOR COURTESY LIGHT RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RIGHT "C" PILLAR) SWIL WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

18 19 PNK WIRE 18 2 SSCL LSWR 23 19 7 6 TKUL LGCY LSFL RCTY 28 2 4 21 HORN FLCY FRCY BZR 31 32 9 10 8 ALTB IG ACT+ ACTD ACT- 4 16 18 PRG RDA LSFR 5 8 3 TMSW TSW 7 28 17 5 20 ACTG TR+ SH LSWL HCTY 9 10 CANP CANN ALL DOOR LOCK RELAY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM D DOOR UNLOCK RELAY D/L 1 FUSE OF DASH) D/L 2 FUSE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT W/ LH J/C L/D DOOR UNLOCK RELAY LCTY LEFT COWL SIDE J/B (LEFT END LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LEFT "C" PILLAR) LH J/B-B FUSE LH-IG FUSE LT BLU WIRE LT GRN WIRE LUGGAGE DOOR OPENING CANCEL SWITCH SWITCH ASSEMBLY MAIN BODY ECU (LEFT END OF DASH) PILLAR) PNK WIRE POWER CHANGE RED WIRE RELAY RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RIGHT "C" WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT REAR CORNER OF ENGINE COMPT) YEL WIRE

13 25 22 14 11 FFGO DRL DIM TRLY 31 32 ALTB IG 4 2 FRCY FLCY 6 13 14 27 5 8 30 29 28 21 20 22 RCTY CANL CANH FFOG HU HF TAIL HEAD AIR CONDITIONING SYSTEM AUTO AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLU WIRE CLTB CLTE CLTS CLTS CLTB CLTE DIMMER SWITCH ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) FOG LIGHT SWITCH GRN WIRE GRY WIRE H-LP LO FUSE HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES LCTY LEFT COWL SIDE J/B LEFT FRONT FOG LIGHT ASSEMBLY LH J/B-B FUSE LH-IG FUSE LIGHT CONTROL SWITCH LLEW RLEW LT BLU WIRE LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MPX-B FUSE OFF P/I-B 1 FUSE PNK WIRE RED WIRE RELAY ENERGIZED RIGHT FRONT FOG LIGHT ASSEMBLY SOLAR SENSOR TAIL TSL TSR VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

31 32 ALTB IG 4 2 FRCY FLCY 6 29 RCTY HEAD BLK WIRE BLU WIRE CAN I/F COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR 3 DISPLAY DRIVER ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT LEVELING MOTOR HEADLIGHT SWIVEL ECU ASSEMBLY (BEHIND LEFT KICK PANEL) HOT AT ALL TIMES INIT INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM LCTY LED DRIVER LEFT COWL SIDE J/B LH - LH E LH ECU-IG FUSE LH J/B-B FUSE LH-IG FUSE LHM+ LHT RHT LIGHT CONTROL SWITCH LT GRN WIRE LVL MAIN BODY ECU (LEFT END OF DASH) MPX-B FUSE OFF AUTO TAIL HEAD PNK RH+ CANH CANL IGS IG COMPUTER DATA LINES SYSTEM WIRE PNK WIRE RED WIRE RELAY ENERGIZED RH E RHM + RIGHT HEADLIGHT ASSEMBLY SBR SHRL PNK WIRE SGR SMGL SMGR TELLTALES VIO WIRE WHT WIRE WHT/BLK WIRE

10 11 PNK WIRE 12 11 PNK WIRE 12 25 13 26 CANP CANN CANH CANL 13 14 CANL CANH 19 7 18 6 TX- TX+ TX- TX+ 5 6 CANN CANP 9 10 CANP CANN ACCESSORY METER ASSEMBLY (W/ NAVIGATION) MULTI-DISPLAY (W/O NAVIGATION) BLK WIRE BLU WIRE ECM (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HEADUP DISPLAY (COMBINATION METER MIRROR ECU) JUNCTION LEFT "C" PILLAR) LT BLU WIRE LT GRN WIRE LUGGAGE CLOSER MOTOR (LEFT FRONT OF LUGGAGE COMPT) MAIN BODY ECU (LEFT END OF DASH) MULTI-MEDIA MODULE RECEIVER ASSEMBLY PARKING BRAKE ECU (LEFT SIDE OF LUGGAGE COMPT) PNK WIRE REAR CONTROL SWITCH RED WIRE W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE

14 13 CANH CANL 21 20 22 CLTS CLTB CLTE 23 14 ACAN TRLY 30 28 29 TAIL 32 31 30 IG ALTB BECU 5 6 3 CLTS CLTB CLTE AGND AUTO TAIL OFF HEAD AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLK/ WHT WIRE BLU WIRE COMBINATION SWITCH ASSEMBLY COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B 1 (LEFT SIDE OF ENGINE COMPT) GLOVE BOX LIGHT (INTERIOR ILLUMINATION LIGHT SUB ASSEMBLY) GRN WIRE GRY WIRE HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT W/ INSTRUMENT PANEL REGISTER ASSEMBLY 2 J/C LEFT COWL SIDE J/B (LEFT END OF DASH) LH ECU-IG FUSE LH J/B-B FUSE LH-IG FUSE LIGHT CONTROL SWITCH LT GRN WIRE MAIN BODY ECU (LEFT END OF DASH) MPX-B FUSE P/I-B 1 FUSE PANL PNK WIRE POWER SWITCH RED WIRE RELAY ENERGIZED REMOTE OPERATION SWITCH REAR SUNSHADE SWITCH ASSEMBLY SHIFT POSITION INDICATOR SWIL VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE YEL WIRE

18 19 PNK WIRE 18 2 SSCL LSWR 23 19 7 6 TKUL LGCY LSFL RCTY 28 2 4 21 HORN FLCY FRCY BZR 31 32 9 10 8 ALTB IG ACT+ ACTD ACT- 4 16 18 PRG RDA LSFR 5 8 3 TMSW TSW 7 28 17 5 20 ACTG TR+ SH LSWL HCTY 9 10 CANP CANN ALL DOOR LOCK RELAY BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM D DOOR UNLOCK RELAY D/L 1 FUSE OF DASH) D/L 2 FUSE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HORNS SYSTEM HOT AT ALL TIMES HOT W/ LH J/C L/D DOOR UNLOCK RELAY LCTY LEFT COWL SIDE J/B (LEFT END LEFT COWL SIDE J/B (LEFT END OF DASH) LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LEFT "C" PILLAR) LH J/B-B FUSE LH-IG FUSE LT BLU WIRE LT GRN WIRE LUGGAGE DOOR OPENING CANCEL SWITCH SWITCH ASSEMBLY MAIN BODY ECU (LEFT END OF DASH) PILLAR) PNK WIRE POWER CHANGE RED WIRE RELAY RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RIGHT "C" WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT REAR CORNER OF ENGINE COMPT) YEL WIRE