Lexus GX J120 (2002-2009) engine control module (behind right side of dash) Wiring diagrams

12 19 SIL TC 20 5 6 SIL TS TC 25 11 CANL CANH 34 33 CANL CANH 6 2 MPX- MPX+ AIR BAG SENSOR ASSEMBLY (BELOW CENTER OF DASH) BLK WIRE BLU WIRE BODY ECU (BEHIND LEFT END OF DASH) BRN WIRE BRN/WHT WIRE CG SG CANH SIL D/G DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DIA EG (ON REAR OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B OBD FUSE (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES IH (BEHIND LEFT END JUNCTION OF DASH) CONNECTOR 11 (LEFT END OF DASH) II (BEHIND LEFT CENTER OF DASH) J/B 1 (BEHIND CENTER OF DASH) J/C 13 (LEFT END OF DASH) J/C 17 (RIGHT SIDE J/C 22 (RIGHT SIDE OF DASH) J/C 36,37 (LOWER LEFT SIDE OF DRIVER'S SEAT) J/C 39, 40, 41, 42, 43, 44 (BEHIND CENTER OF DASH) LEFT REAR POWER WINDOW CONTROL SWITCH LT GRN WIRE MPX MULTI-DISPLAY OF DASH) ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE POWER SEAT ECU, SWITCH (LOWER LEFT SIDE OF DRIVER'S SEAT) POWER WINDOW MASTER SWITCH RAIN SENSOR (AT TOP CENTER OF FRONT WINDSHIELD) RED WIRE RED/BLK WIRE RED/YEL WIRE REMOTE CONTROL MIRROR ECU (BEHIND LEFT SIDE OF DASH) RIGHT FRONT POWER WINDOW CONTROL SWITCH RIGHT REAR POWER WINDOW CONTROL SWITCH SIL SKID CONTROL ECU W/ ACTUATOR STABILIZER CONTROL ECU (AT LEFT REAR OF VEHICLE) STEERING SENSOR (IN STEERING COLUMN) SUB BODY ECU (BELOW LEFT "D" PILLAR, BEHIND TRIM) SUSPENSION CONTROL ECU (BEHIND LEFT END OF DASH, ABOVE DRIVER SIDE J/B) THEFT DETERRENT ECU (BEHIND LEFT SIDE OF DASH) TILT, TELESCOPIC ECU (BEHIND LEFT SIDE OF DASH) TIRE PRESSURE WARNING ECU TRANSPONDER KEY COMPUTER (BEHIND UPPER RIGHT SIDE OF DASH) TS TC CANL WFSE BATT VIO WIRE WFSE WHT WIRE WHT/BLK WIRE WIPER RELAY (BEHIND RIGHT SIDE OF DASH) YAW RATE SENSOR (BELOW FRONT OF CENTER CONSOLE) YEL WIRE

7 15 16 +BM STP 9 1 2 3 8 23 18 19 26 27 20 21 IGSW +B 9 1 EC ACCEL POSITION SENSOR (BEHIND LEFT SIDE OF DASH) BATT MREL TC VPA BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BRN BRN WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMBINATION METER COMBINATION SWITCH CRUISE CONTROL SWITCH CRUISE IND DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) EE (ON REAR OF RIGHT CYLINDER HEAD) EFI FUSE EFI RELAY EG (ON REAR OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) ETCS FUSE FUSE GAUGE FUSE GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGN FUSE J/B 1 (BEHIND CENTER OF DASH) J/B 2 (BEHIND CENTER OF DASH) J/B 3 (BEHIND RIGHT SIDE OF DASH) J/C 10 (CENTER OF DASH) J/C 13 (LEFT END OF DASH) J/C 15 (RIGHT SIDE OF DASH) J/C 16 (RIGHT SIDE OF DASH) J/C 17 (RIGHT SIDE OF DASH) J/C 19 (RIGHT SIDE OF DASH) J/C 2 (LEFT SIDE OF ENGINE COMPT) J/C 20 (RIGHT SIDE OF DASH) J/C 21 (RIGHT SIDE OF DASH) J/C 5 (RIGHT FRONT OF ENGINE COMPT, BEHIND RIGHT HEADLIGHT ASSEMBLY) J/C 9 (LEFT END OF DASH) LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE M- M+ NCA WIRE NSSD ON OFF PNK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE SKID CONTROL ECU, ACTUATOR (LEFT REAR OF ENGINE COMPT) SPD CCS PI EOM SPEEDO- METER SPRIAL CABLE STOP FUSE DOME FUSE STOPLIGHT SWITCH THROTTLE CONTROL MOTOR, THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANSMISSION CONTROL SWITCH VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

20 24 23 12 11 ACTY PCTY DCTY RRCY RLCY BLK/RED WIRE BLK/WHT WIRE BODY ECU (BEHIND LEFT END OF DASH) BRN WIRE BRN/BLK WIRE COMBINATION METER DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) ECU-IG FUSE EG (ON REAR OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) GAUGE FUSE HEIGHT CONTROL HOT IN ON OR START J/B 1 (BEHIND CENTER OF DASH) J/B 3 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR 13 (LEFT END OF DASH) JUNCTION CONNECTOR 16 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 19 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 22 (RIGHT SIDE OF DASH) LEFT FRONT DOOR COURTESY SWITCH (LOWER LEFT "B" PILLAR) OFF PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH (BOTTOM OF RIGHT "B" PILLAR) TACH TACHOMETER TEMS FUSE TS SIL WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/YEL WIRE BQ (AT CENTER REAR OF HATCH) DAC RELAY EA (ON RIGHT FRONT INNER FENDER) EB (ON LEFT FRONT INNER FENDER) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE GRN/YEL WIRE HIGH MOUNTED STOPLIGHT HOT AT ALL TIMES JUNCTION CONNECTOR 1 (LEFT SIDE OF ENGINE COMPARTMENT) JUNCTION CONNECTOR 20 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 22 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 7, 8 (LEFT END OF DASH) JUNCTION CONNECTOR 9 (LEFT END OF DASH) LEFT FRONT COMBINATION LIGHT LT GRN WIRE PARKING RED WIRE RIGHT FRONT COMBINATION LIGHT SHIFT LOCK CONTROL ECU (UNDER CENTER CONSOLE, NEAR SHIFT LEVER ASSEMBLY) STP SIDE MARKER SKID CONTROL ECU (W/ ACTUATOR) (LEFT REAR OF ENGINE COMPT) STOP FUSE STOP LIGHT SWITCH SUSPENSION CONTROL ECU (BEHIND LEFT END OF DASH, ABOVE DRIVER SIDE J/B) TOWING BRAKE CONTROLLER (BEHIND LEFT SIDE OF DASH) STOP TRN-HAZ FUSE TURN WHT WIRE WHT/BLK WIRE WIPER RELAY (BEHIND RIGHT SIDE OF DASH) YEL WIRE

21 20 NE+ NE- 25 24 1 14 ACT A/C CONDENSER FAN MOTOR (RIGHT FRONT OF ENGINE COMPT) A/C LOCK SENSOR, MAGNETIC CLUTCH (ON A/C COMPRESSOR ASSEMBLY) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE BRN/YEL WIRE CDS FAN FUSE CDS FAN RELAY COMBINATION METER CRANKSHAFT POSITION SENSOR (ON LOWER FRONT OF ENGINE) DOME FUSE DRIVER SIDE J/B (BEHIND LOWER GAUGE FUSE LEFT END OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EA (ON RIGHT FRONT INNER FENDER) EG (ON REAR OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (ON RIGHT FRONT OF ENGINE) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 2 (BEHIND CENTER OF DASH) J/B 3 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR MG CLT RELAY NCA WIRE NOISE FILTER (CONDENSER FAN) (AT RIGHT FRONT OF ENGINE COMPT) PNK/BLK WIRE PRESSURE SWITCH (ON RIGHT FRONT OF ENGINE COMPT) RED WIRE RED/BLU WIRE SPEEDOMETER TACH THWO TACHOMETER VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

21 20 NE+ NE- 25 24 1 14 ACT A/C CONDENSER FAN MOTOR (RIGHT FRONT OF ENGINE COMPT) A/C LOCK SENSOR, MAGNETIC CLUTCH (ON A/C COMPRESSOR ASSEMBLY) BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN WIRE BRN/YEL WIRE CDS FAN FUSE CDS FAN RELAY COMBINATION METER CRANKSHAFT POSITION SENSOR (ON LOWER FRONT OF ENGINE) DOME FUSE DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EA (ON RIGHT FRONT INNER FENDER) EG (ON REAR OF LEFT CYLINDER HEAD) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (ON RIGHT FRONT OF ENGINE) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE GRY/BLU WIRE HOT AT ALL TIMES HOT IN ON OR START J/B 1 (BEHIND CENTER OF DASH) J/B 2 (BEHIND CENTER OF DASH) J/B 3 (BEHIND RIGHT SIDE OF DASH) JUNCTION CONNECTOR MG CLT RELAY NCA WIRE NOISE FILTER (CONDENSER FAN) PNK/BLK WIRE PRESSURE SWITCH (ON RIGHT FRONT OF ENGINE COMPT) RED WIRE RED/BLU WIRE SPEEDOMETER TACH THWO TACHOMETER VIO WIRE VIO/RED WIRE WHT WIRE WHT/BLK WIRE WHT/GRN WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

5 6 7 TXCT AGND BLK/RED WIRE BLU/RED WIRE BRN WIRE CODE COMBINATION METER COURTESY SWITCH CTY DATA LINK CONNECTOR 3 (BELOW LEFT SIDE OF DASH) SIL DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) ECU-B FUSE ECU-IG FUSE EFII EFIO ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B GRN/YEL WIRE HOT AT ALL TIMES HOT IN ON OR START IMI IMO IND J/B 1 (BEHIND CENTER OF DASH) J/B 2 (BEHIND CENTER OF DASH) JUNCTION CONNECTOR 13 JUNCTION CONNECTOR 14 (LEFT SIDE OF DASH) IJ (BEHIND LEFT CENTER OF DASH) JUNCTION CONNECTOR 22 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 23 (LOWER RIGHT SIDE OF DASH) IL (BEHIND RIGHT SIDE OF DASH) RED WIRE RED/YEL WIRE SECURITY IND TRANSPONDER KEY AMPLIFIER (IN RIGHT SIDE OF STEERING COLUMN) TRANSPONDER KEY COIL TRANSPONDER KEY COMPUTER (BEHIND UPPER RIGHT SIDE OF DASH) TXCT UNLOCK WARNING SWITCH VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

ACCESSORY METER ADIN AIR BAG CUT OFF SWITCH ASHTRAY ILLUMINATION BLU WIRE CENTER DIFFERENTIAL LOCK CONTROL SWITCH CIGARETTE LIGHTER ILLUMINATION COMBINATION SWITCH CONSOLE BOX ILLUMINATION DOWNHILL ASSIST CONTROL SWITCH EAU ILL+ ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ELS ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) GLOVE BOX LIGHT GRN WIRE GRN/RED WIRE HAZARD SWITCH HEIGHT CONTROL, SUSPENSION SWITCH J/B 2 (BEHIND CENTER OF DASH) JUNCTION CONNECTOR 14 (LEFT SIDE OF DASH) JUNCTION CONNECTOR 23 (LOWER RIGHT SIDE OF DASH) JUNCTION CONNECTOR 23 (LOWER RIGHT SIDE OF DASH) IL JUNCTION CONNECTOR 28 (AT RIGHT KICK PANEL) LEFT FRONT SEAT HEATER SWITCH MAIN SWITCH MIRROR HEATER SWITCH MULTI-DISPLAY RADIO, PLAYER REAR COOLER SWITCH RED WIRE REMOTE CONTROL MIRROR SWITCH RIGHT DOOR LOCK CONTROL SWITCH RIGHT FRONT SEAT HEATER SWITCH ROLL SENSING CURTAIN SHIELD SWGND TAIL W/O REAR A/C W/REAR A/C A/C WHT WIRE WHT/BLK WIRE WHT/GRN WIRE

A/C ECU A/C CONTROL ASSEMBLY (BEHIND RIGHT SIDE OF DASH) ALT FUSE BLK WIRE BLU WIRE DEFOG FUSE DEFOG RELAY DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRY WIRE GRY/BLU WIRE HEATER CONTROL SWITCH HOT AT ALL TIMES HOT IN ON OR START JUNCTION CONNECTOR 1 (LEFT SIDE OF ENGINE COMPT) JUNCTION CONNECTOR 15 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 2, 3 (LEFT SIDE OF ENGINE COMPT) L-RDEF REAR WINDOW DEFOGGER RED WIRE RRDEF S-RDEF S-RDEF L-RDEF W/ LEXUS NAVIGATION SYSTEM W/ LEXUS NAVIGATION SYSTEM W/O LEXUS NAVIGATION SYSTEM WHT WIRE YEL WIRE

BATTERY BATTERY GROUND BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU/YEL WIRE COMBINATION METER DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/BLK WIRE IGNITION SWITCH JUNCTION CONNECTOR 17 JUNCTION CONNECTOR 2, 3 JUNCTION CONNECTOR 26 LOCK OFF NCA WIRE NSW/STAR PARK/ NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANSMISSION) RED WIRE RUN WIRE STARTER STARTER RELAY STSW WHT WIRE WHT/RED WIRE YEL WIRE