Lexus GS III facelift (2007-2011) engine control module (at left side of engine compt) Wiring diagrams

1 2 SOL- SOL+ 3 1 2 +B GND 3.5L 4.6L 4.6L 3.5L 4.6L 3.5L SUB FAN MOTOR A/C COMP FUSE A/C COMP RELAY (3.5L) A/C COMPRESSOR (3.5L) (LEFT FRONT OF ENGINE) A/C COMPRESSOR (LEFT FRONT ACMG BLK WIRE BLOWER MOTOR (UNDER LOWER RIGHT SIDE OF DASH) BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE CAN L COMPUTER DATA LINES SYSTEM COOLING FAN ECU ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) ETAM FAN MAIN RELAY FLOW CONTROL VALVE FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN/YEL WIRE GRY WIRE HEATER FUSE HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) HOT AT ALL TIMES ENGINE ROOM R/B 2 (LEFT SIDE OF ENGINE COMPT) LCKI LOCK SENSOR LT GRN WIRE MAGNETIC CLUTCH MAIN FAN MOTOR OF ENGINE) RED WIRE RFC TAM VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE YEL/BLK WIRE

3.5L 30 31 13 26 38 MPX+ MPX- PRE 4.6L 4.6L 3.5L SUB FAN MOTOR A/C AMPLIFIER (BEHIND CENTER RIGHT OF DASH) A/C PRESSURE SENSOR (LEFT FRONT OF ENGINE COMPT) BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CAN L COMPUTER DATA LINES SYSTEM COOLING FAN ECU CRANKSHAFT POSITION SENSOR (4.6L) (LEFT FRONT OF ENGINE) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) FAN MAIN RELAY FUSE GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES LEFT COWL SIDE J/B (BEHIND LEFT SIDE OF DASH) LH-IG FUSE LT BLU WIRE LT GRN WIRE MAIN FAN MOTOR NCA WIRE NE+ PNK NE- WIRE PNK WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RED (OR RED/BLU) WIRE RED WIRE RELAY RFC SG-2 VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

3.5L 3.5L 4.6L 3.5L 4.6L 4.6L 3.5L ABSORBER CONTROL ECU BLK WIRE BLK) (OR YEL/ WIRE BLU WIRE BODY ECU BRN (OR WHT/BLK) WIRE BRN WIRE CENTER AIR BAG SENSOR ASSEMBLY CG SG CANH SIL D/G DATA LINK CONNECTOR 3 (BEHIND LEFT SIDE OF DASH) DIA ECU (RIGHT REAR OF LUGGAGE COMPT) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) FREE FRONT STABILIZER CONTROL ECU (RIGHT FRONT CORNER OF ENGINE COMPT) GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN/BLK WIRE GRY WIRE HIGH/LOW BUS CIRCUIT HOT AT ALL TIMES LEFT CENTER J/B (BEHIND RIGHT SIDE OF DASH) LEFT COWL SIDE J/B (BEHIND LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MAYDAY ECU (CENTER REAR OF LUGGAGE COMPT) MULTI-DISPLAY OBD FUSE OCCUPANT CLASSIFICATION ECU ORG/ WIRE PNK PNK WIRE PNK WIRE POWER STEERING ECU RED WIRE RIGHT CENTER J/B (BEHIND RIGHT SIDE OF DASH) RIGHT COWL SIDE J/B (BEHIND RIGHT SIDE OF DASH) SIL SKID CONTROL ECU (LEFT REAR OF ENGINE COMPT) SKID CONTROL ECU W/ ACTUATOR (3.5L) (LEFT REAR OF ENGINE COMPT) STEERING CONTROL ECU (UNDER GLOVE COMPT) TAC TACH TS TC CANL WFSE BAT VIO WIRE WFSE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TRQV RZV RZCS RZSN 1 2 3 4 5 6 7 8 9 10 11 CAN+ CANH CANL PIG PGND 16 10 (4.6L) (3.5L) 17 2 (4.6L) (3.5L) 24 25 CANL CANH 5 25 MPX- MPX+ 9 10 CANL CANH BLK WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN WIRE CAN- IG SIL RLY COMBINATION METER COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR 3 (BEHIND LEFT SIDE OF DASH) ECU-B FUSE ECU-IG LH FUSE ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B 1, ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) EPS FUSE EPS RELAY GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GAUGE FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START INCS INSN INSN INCS OUSN OUCS LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OUCS OUSN POWER STEERING ECU (RIGHT REAR CORNER OF ENGINE COMPT) POWER STEERING MOTOR (FRONT OF ENGINE COMPT) POWER STEERING TORQUE SENSOR (LEFT FRONT OF ENGINE COMPT) PS (+) RED WIRE RED/BLK WIRE RED/BLU WIRE RIGHT CENTER J/B (BEHIND RIGHT SIDE OF DASH) RIGHT COWL SIDE J/B RIGHT COWL SIDE J/B (BEHIND RIGHT SIDE OF DASH) RZCS RZG RZSN RZV SIL SKID CONTROL ECU (3.5L) (LEFT REAR OF ENGINE COMPT) SKID CONTROL ECU (4.6L) (LEFT REAR OF ENGINE COMPT) SRZG STEERING SENSOR (BEHIND LEFT OF DASH, NEAR STEERING COLUMN) VIO WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 CANH CANL 10 9 CANH CANL 3 2 CANH CANL 3.5L 4.6L 4.6L 3.5L 8 9 CANH CANL 9 10 14 13 CAN- CAN+ CANH CANL 9 22 CANH CANL BLK WIRE BLU WIRE BRN WIRE CAN (+) DISTANCE CONTROL ECU (BEHIND LEFT SIDE OF DASH) ELECTRONIC MODULATED SUSPENSION ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GATEWAY ECU 2 (FRONT OF LUGGAGE COMPT) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START IGN FUSE LEFT CENTER J/B (BEHIND RIGHT SIDE OF DASH) LEFT COWL SIDE J/B (BEHIND LEFT SIDE OF DASH) LH-IG FUSE LT GRN WIRE MPX-B FUSE ORG/ WIRE PNK WIRE RED WIRE RIGHT COWL SIDE J/B (BEHIND RIGHT SIDE OF DASH) SEAT BELT CONTROL ECU SKID CONTROL ECU (LEFT REAR OF ENGINE COMPT) ST-PLUG STEERING SENSOR (BEHIND LEFT SIDE OF DASH, NEAR STEERING COLUMN) TRANSMISSION CONTROL ECU (4.6L) (LEFT FRONT OF ENGINE COMPT) VIO WIRE WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (UNDER FRONT OF CENTER FLOOR CONSOLE) YEL WIRE

1 2 TX- TX+ 10 9 TX- TX+ 24 25 CANL CANH 9 10 TXM+ TXM- BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CAIL CAIH GTX+ GTX- COMPUTER DATA LINES SYSTEM DEFOG FUSE DEFOG RELAY ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE ROOM J/B 1 (RIGHT REAR OF ENGINE COMPT) ENGINE ROOM R/B 1 (RIGHT REAR OF ENGINE COMPT) GATEWAY ECU (BEHIND RIGHT SIDE OF DASH) GRN/BLK WIRE GRY WIRE HOT AT ALL TIMES LEFT COWL SIDE J/B (BEHIND LEFT SIDE OF DASH) LH-IG FUSE LT BLU WIRE LT GRN WIRE MULTI-DISPLAY NOISE FILTER POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RADIO RECEIVER ASSEMBLY RDEF REAR WINDOW DEFOGGER REAR WINDOW DEFOGGER SWITCH RELAY RIGHT COWL SIDE J/B (BEHIND RIGHT SIDE OF DASH) WHT WIRE WHT/BLK WIRE YEL WIRE

21 22 23 24 25 26 27 28 29 30 31 PPMP VCPP EPPM CANL CANH TAM ETAM ACCELERATOR POSITION SENSOR (UNDER LEFT SIDE OF DASH) AIR CONDITIONING SYSTEM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE C/OPN RELAY COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CTSW DEFOGGER SYSTEM EFI 2 RELAY EFI FUSE EFI MAIN RELAY EFII EFIO ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) F/PMP FUSE GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES IREL ACMG VPMP RDEF LGND RFC ACCR STA MREL FC FPR LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLU WIRE POWER SOURCE CONTROL ECU (BEHIND RIGHT SIDE OF DASH) RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SFTD SFTU CCS SKSW SPD KSW STSW STSW CCHG TACH TC STP MPMP IMI IMO VIO WIRE VIO/RED WIRE VIO/WHT WIRE VPA EPA VCPA WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

+BM AIR CONDITIONING SYSTEM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE CAMSHAFT TIMING OIL CONTROL VALVE (RIGHT INTAKE SIDE) (RIGHT SIDE OF ENGINE) CENTER J/B RIGHT (BEHIND RIGHT SIDE OF DASH) CRANKSHAFT POSITION SENSOR (ON LEFT FRONT OF ENGINE) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ IG 2 RELAY ENERGIZED IGN FUSE LCKI LT BLU WIRE LT GRN WIRE NCA WIRE NE+ ORG/ WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE RELAY ENERGIZED RH-IG FUSE SFTD SFTU STOP LAMP SWITCH (ON BRAKE PEDAL BRACKET) STOP SW FUSE TRANSMISSION CONTROL SWITCH VIO WIRE VVL+ VVR+ VVT SENSOR (BANK 1 INTAKE SIDE) (RIGHT SIDE OF ENGINE) VVT SENSOR (BANK 2 INTAKE SIDE) (LEFT SIDE OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE

AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) (RIGHT REAR OF ENGINE) AIR FUEL RATIO SENSOR (BANK 2 SENSOR 1) (LEFT REAR OF ENGINE) BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) EPR EX+ FP- FPD + GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/WHT WIRE VCPR VIO WIRE VVT SENSOR (BANK 1 EXHAUST SIDE) (RIGHT SIDE OF ENGINE) VVT SENSOR (BANK 2 EXHAUST SIDE) (LEFT SIDE OF ENGINE) WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

BLK LT GRN/ WIRE BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE EKNK ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (IN TRANSMISSION) ENGINE CONTROL MODULE (AT LEFT SIDE OF ENGINE COMPT) ENGINE OIL PRESSURE SWITCH (LEFT FRONT OF ENGINE) EOIL OIL GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NT- NT+ OIL ORG/ WIRE PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE SLT- SLT- SLT+ SLU+ SLU- SLU+ MOL STAR MOPS STARTING/ CHARGING SYSTEM THA THA ETHA THW ETHW ALT TRANSMISSION REVOLUTION SENSOR (COUNTER GEAR) (IN TRANS- MISSION) TRANSMISSION REVOLUTION SENSOR (TURBINE) (IN TRANS- MISSION) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE