Lexus GX J120 (2002-2009) engine controls system Wiring diagrams

+B +BM MREL IGSW EPA 23 18 3 2 1 7 8 9 20 19 26 21 27 17 15 TC VPA BATT 3 4 OILW SNWI A/T SHIFT INDICATOR ACC CUT RELAY ACCR STP ATD ATL BLK WIRE BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE EB (ON LEFT FRONT INNER FENDER) EFI FUSE EFI RELAY EG (ON REAR OF LEFT CYLINDER HEAD) ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SWITCH ENGINE CONTROL MODULE (ECM) (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) EOM SPD ETCS FUSE GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES J/B 1 (BEHIND CENTER OF DASH) J/B 2 (BEHIND CENTER OF DASH) J/C 14 (LEFT SIDE OF DASH) J/C 17 (RIGHT SIDE OF DASH) J/C 18 (RIGHT IJ 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 24 (IN CENTER CONSOLE) J/C 9 IJ (LEFT END OF DASH) LT GRN/RED WIRE NSSD NSSL PNK WIRE PNK/BLK WIRE PNK/BLU WIRE RED/BLK WIRE SNWO STOP FUSE STOP LIGHT SWITCH STRT TRANSMISSION CONTROL SWITCH VIO/RED WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL/BLU WIRE

12 11 8 1 9 STSW STA 4 5 17 20 28 19 21 7 6 M- M+ BLK WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/YEL WIRE BRN WIRE CONTROL MOTOR, THROTTLE POSITION SENSOR (ON THROTTLE BODY) DRIVER SIDE J/B (BEHIND FUSE LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) EE (ON REAR OF RIGHT CYLINDER HEAD) EG (ON REAR OF LEFT CYLINDER HEAD) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID (ON TRANSMISSION) ENGINE CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (ON RIGHT FRONT OF ENGINE) GRN WIRE GRN/BLK WIRE GRY WIRE HOT IN J/C 10 (CENTER OF DASH) J/C 26 (CENTER OF DASH) LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE NT+ NT- NSW/STAR O/T ORG/ WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE SLT- SLT- SLT+ SR SLU+ SLU- SLU+ STARTING/ CHARGING SYSTEM THROTTLE VIO WIRE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

ACC CUT RELAY BKUP LP RELAY BLK WIRE BLU WIRE BQ (AT CENTER REAR OF HATCH) DIODE (BACK-UP LIGHT) (BEHIND RIGHT SIDE OF DASH) DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) 2 FUSE ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPARTMENT) FUSE GRN WIRE GRY WIRE GRY/BLU WIRE HOT IN ON OR ACC HOT IN ON OR START JUNCTION CONNECTOR JUNCTION CONNECTOR 23 (LOWER RIGHT SIDE OF DASH) JUNCTION CONNECTOR 33 (RIGHT REAR OF CARGO AREA) LEFT BACK-UP LIGHT PARK/NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANSMISSION) PASSENGER SIDE R/B (AT RIGHT KICK PANEL) RED WIRE RED/BLK WIRE RED/YEL WIRE RIGHT BACK-UP LIGHT TRAILER SOCKET WHT WIRE WHT/BLK WIRE WHT/GRN WIRE 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

A/T OIL TEMP IND ABS IND. ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM AT P IND BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE BRN/RED WIRE BRN/YEL WIRE BUZZER CENTER DIFF LOCK IND CHARGE IND COMBINATION METER DAWNHILL ASSIST IND DOME FUSE DOOR IND DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) GAUGE FUSE DRIVER'S SEAT BELT IND EG (ON REAR OF LEFT CYLINDER HEAD) ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) EXTERIOR LIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM FUEL GAUGE FUEL IND FUEL SENDER GRN WIRE GRN/BLK WIRE GRN/ORG WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HEAD IND TAIL IND (CANADA) WASHER IND HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM CRUISE CONTROL SYSTEM HEIGHT CONTROL CRUISE IND HI-BEAM IND HOT AT ALL TIMES HOT IN ON OR START IGNITION SWITCH ILLUMINATION INCLINATION SENSOR INTERIOR LIGHTS SYSTEM TRANSMISSIONS SYSTEM J/B 2 (BEHIND CENTER OF DASH) LEFT TURN IND LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE MAINT REQD IND MALFUNCTION IND LAMP O/D TRIP OFF OIL PRESSURE SWITCH (ON LEFT FRONT OF ENGINE) PNK WIRE PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RED/YEL WIRE RIGHT TURN IND SECURITY IND SLIP IND SPEEDOMETER SRS IND BRAKE IND STARTING/CHARGING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM INTERIOR LIGHTS SYSTEM TACHOMETER TEMPERATURE GAUGE TIRE PRESSURE IND TO COMBINATION METER (DIAGRAM 2 OF 2) TRANSMISSIONS SYSTEM USA VIO/RED WIRE VIO/WHT WIRE VIO/YEL WIRE VSC OFF IND WARNING SYSTEM WARNING SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/RED WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 GND SG TH+ DMIN SWOT TAIL ACC CUT RELAY ACCESSORY METER AIR CONDITIONING SYSTEM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BODY ECU COMBINATION METER DCTY DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) ECU, MOTOR ECU-B FUSE ECU-IG FUSE ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPT) FROM COMBINATION METER FUSE GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES HOT IN ACC OR ON HOT IN ON OR START HOT W/ TAIL RELAY ENERGIZED IL (BEHIND RIGHT SIDE OF DASH) INTERIOR LIGHTS SYSTEM AIR CONDITIONING SYSTEM J/B 1 (BEHIND CENTER OF DASH) J/B 2 (BEHIND CENTER OF DASH) J/B 3 (BEHIND RIGHT SIDE OF DASH) KDSS IND KSWO LEFT FRONT DOOR COURTESY SWITCH (LOWER LEFT "B" PILLAR) LEFT REAR DOOR COURTESY SWITCH (BOTTOM OF LEFT "C" PILLAR) LT GRN WIRE LT GRN/BLK WIRE NAVIGATION SYSTEM OIL PRESSURE IND PANEL FUSE PCTY PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/BLU WIRE RED WIRE RED/YEL WIRE RIGHT FRONT DOOR COURTESY SWITCH (BOTTOM OF RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY SWITCH (BOTTOM OF RIGHT "C" PILLAR) RLCY RRCY RSCA OFF IND SPD IG STEREO COMPONENT AMPLIFIER TC DATA VIO WIRE VIO/RED WIRE VSC TRAC IND WARNING SYSTEM ENGINE CONTROLS SYSTEM AIR CONDITIONING SYSTEM WASHER LEVEL SENSOR (AT RIGHT FRONT OF ENGINE COMPT, ON WASHER FLUID RESERVOIR) WHT WIRE WHT/BLK WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE YEL/RED WIRE

A/PUMP FUSE ABS MTR FUSE ABS SOL FUSE FUSE AC INV RELAY AIR CONDITIONING SYSTEM AIR SUS FUSE HEATER FUSE ALT FUSE ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, ENGINE CONTROLS, ANTI-THEFT SYSTEM BATTERY BLK WIRE BLK/ WHT WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BR (AT RIGHT REAR OF VEHICLE, BELOW TAILLIGHT) BRN WIRE CDS FAN FUSE J/B FUSE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOME FUSE DOOR LOCKS, ANTI-THEFT, POWER TOPS, MIRRORS SYSTEMS DR/LCK FUSE EB (ON LEFT FRONT INNER FENDER) ECU-B 2 FUSE ECU-B FUSE EFI FUSE ELECTRONIC SUSPENSION SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS, TRANSMISSIONS, CRUISE CONTROL SYSTEMS ENGINE ROOM R/B ENGINE ROOM R/B STA RELAY ETCS FUSE EXTERIOR LIGHTS SYSTEM STARTING/ CHARGING SYSTEM EXTERIOR LIGHTS SYSTEM FROM DRIVER SIDE J/B (DIAGRAM 2 OF 2) FROM ENGINE ROOM R/B (DIAGRAM 1 OF 2) FUSE GARAGE DOOR OPENER, EXTERIOR LIGHTS, TRANSMISSIONS, GRN WIRE GRN/RED WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE HEAD RELAY HEADLIGHTS SYSTEM HORNS, ANTI-THEFT SYSTEMS POWER WINDOWS SYSTEM IGN RELAY JUNCTION JUNCTION CONNECTOR LT GRN/RED WIRE MAIN SWITCH MAY- DAY FUSE A/F HEATER FUSE MIR HTR FUSE NAVIGATION SYSTEM NAVIGATION, SOUND SYSTEMS NAVIGATION, SOUND SYSTEMS STARTING/ CHARGING SYSTEM OBD FUSE FR FOG FUSE ORG/ WIRE PNK WIRE POWER OUTLET RADIO 1 FUSE DEFOG RELAY RADIO 2 FUSE RED WIRE RED/BLK WIRE RED/BLU WIRE RR A/C FUSE SHORT PIN STARTER STOP FUSE TO DRIVER SIDE J/B (DIAGRAM 2 OF 2) TO ENGINE ROOM R/B (DIAGRAM 1 OF 2) TO IGNITION SWITCH (DIAGRAM 2 OF 2) TOWING FUSE AC INV FUSE BATT CHG FUSE TOWING BRK FUSE TRN- HAZ FUSE HORN FUSE ALT-S FUSE D FR P/W FUSE TOWING FUSE WHT WIRE WHT/ BLK WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

2 FUSE ANTI-LOCK BRAKES, EXTERIOR LIGHTS, BLK/ORG WIRE BLK/RED WIRE BLU WIRE BLU/ WHT WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BODY COMPUTER, INTERIOR LIGHTS SYSTEMS BODY ECU CIG FUSE FUSE CIGARETTE LIGHTER D RR P/W FUSE P/SEAT FUSE DIFF FUSE TEMS FUSE RR WIP FUSE DRIVER SIDE DRIVER SIDE J/B (BEHIND LOWER LEFT ECU-IG FUSE ENGINE CONTROLS SYSTEM ENGINE CONTROLS, CRUISE CONTROL, ANTI-LOCK BRAKES SYSTEMS ENGINE CONTROLS, INSTRUMENT CLUSTER, EXTERIOR LIGHTS, INTERIOR LIGHTS DEFOGGER, WARNING, FR WIP-WSH FUSE FROM ENGINE ROOM R/B (DIAGRAM 1 OF 2) FROM IGNITION SWITCH (DIAGRAM 2 OF 2) FRONT POWER OUTLET FUSE END OF DASH) GRN WIRE GRN/ WHT WIRE GRN/BLK WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE IGN FUSE GAUGE FUSE IGNITION SWITCH IJ (BEHIND LEFT CENTER OF DASH) INSTRUMENT CLUSTER, NAVIGATION, INTERIOR LIGHTS SYSTEMS J/B (BEHIND LOWER LEFT END OF DASH) P FR P/W FUSE JUNCTION LOCK OFF MEMORY SEATS SYSTEMS SYSTEM MEMORY SYSTEMS MIRRORS SYSTEM P RR P/W FUSE P/SEAT FUSE PNK WIRE PNK/BLU WIRE PNK/GRN WIRE POWER OR TI, TE FUSE POWER OUTLET FUSE POWER TOPS SYSTEM POWER WINDOWS SYSTEM RED/BLU WIRE RR WASH FUSE RUN WIRE SKT RELAY SRS FUSE FUSE STARTING/CHARGING, ENGINE CONTROLS, TRANSMISSIONS SYSTEMS STARTING/CHARGING, EXTERIOR LIGHTS, SEATS, DEFOGGER, AIR CONDITIONING SYSTEMS SUPPLEMENTAL RESTRAINTS SYSTEM SUSPENSION, NAVIGATION, AIR CONDITIONING SYSTEMS TAIL FUSE PANEL FUSE TAIL RELAY TO DRIVER SIDE J/B (DIAGRAM 2 OF 2) TO MAIN SWITCH (DIAGRAM 1 OF 2) TRANSMISSIONS SYSTEM VIO WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WIPER/WASHER ELECTRONIC SUSPENSION SYSTEM SYSTEM WIPER/WASHER SYSTEM WIPER/WASHER, ELECTRONIC SUSPENSION SYSTEMS YEL/RED WIRE

1 2 3 4 5 6 7 8 9 +B RTOT RTIN LTOT ACC CUT RELAY BATT CHG FUSE BATT CHG RELAY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/ORG WIRE BLU/RED WIRE BLU/YEL WIRE BODY ECU BRN WIRE DAC RELAY DRIVER SIDE J/B (BEHIND LOWER LEFT END OF DASH) EB (ON LEFT FRONT INNER FENDER) ENGINE CONTROLS SYSTEM ENGINE ROOM R/B (ON LEFT SIDE OF ENGINE COMPARTMENT) ENGINE ROOM R/B 4 (ON LEFT SIDE OF ENGINE COMPARTMENT) GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HOT AT ALL TIMES JUNCTION CONNECTOR 19 (RIGHT SIDE OF DASH) JUNCTION CONNECTOR 2 JUNCTION CONNECTOR 30 (LEFT REAR OF VEHICLE, BEHIND BUMPER) JUNCTION CONNECTOR 31 (LEFT REAR OF VEHICLE, BEHIND BUMPER) JUNCTION CONNECTOR 32 (LEFT REAR OF JUNCTION CONNECTOR 7, 8 (LEFT END OF DASH) LT GRN WIRE RED WIRE RED/BLK WIRE RED/YEL WIRE SKID CONTROL ECU (W/ ACTUATOR) (LEFT REAR OF ENGINE COMPT) STIN LTIN STOP FUSE TAIL BATT STTL B/UP STTR GND BRK 2 3 4 5 6 7 TOWING BRAKE FUSE TOWING CONVERTER RELAY (ON LEFT SIDE OF CARGO AREA) TOWING FUSE TOWING TAIL RELAY TRAILER SOCKET TURN, HAZ FUSE VEHICLE, BEHIND BUMPER) BP WHT WIRE WHT/BLK WIRE YEL WIRE