Lexus RX III (2008-2012) overhead module Wiring diagrams

+ECU 26 25 DMON DMDR 3 1 FRCL ILE 31 32 29 ALTB IG 4 11 FRCY BLK WIRE BLU WIRE BRN WIRE CANN CANP COMPUTER DATA LINES SYSTEM CSPT CTY CTY GND D/L ALT B FUSE DOME FUSE FLCL FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILLB LILL ILLB RGND LCTY LCYL LEFT FRONT COURTESY LIGHT ASSEMBLY LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT "B" PILLAR) LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) LEFT OUTER REAR VIEW MIRROR ASSEMBLY (ON LEFT FRONT DOOR) LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT REAR "C" PILLAR) LP HTR- LT BLU WIRE LT GRN WIRE MAIN BODY ECU INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) ORG/ WIRE OVERHEAD MODULE PNK WIRE RCTY RCYL RED WIRE RIGHT FRONT COURTESY LIGHT ASSEMBLY RIGHT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT "B" PILLAR) RIGHT REAR COURTESY LIGHT ASSEMBLY RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT REAR "C" PILLAR) RRMP SHFT RGND DOOR CILL SPORT LIGHT ASSEMBLY VIO WIRE WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 IG BLK WIRE BLU WIRE ECI+ FUSE GRN WIRE GRY WIRE INNER REAR VIEW MIRROR INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) ECI+ EC- EC+ LEFT OUTER REAR VIEW MIRROR ASSEMBLY (ON LEFT FRONT DOOR) ORG/ WIRE OVERHEAD MODULE PNK EC+ EC- PNK WIRE PNK IG GND WIRE PNK WIRE RED WIRE RELAY ENERGIZED RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (IN RIGHT FRONT DOOR) ECI- ECI+ EC- EC+ RIGHT OUTER REAR VIEW MIRROR ASSEMBLY (ON RIGHT FRONT DOOR) VIO WIRE WHT WIRE YEL WIRE

BLK WIRE BLU WIRE EC- EC+ IG PNK WIRE FUSE GRN WIRE GRY WIRE INNER REAR VIEW MIRROR INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) ECI+ ECI- EC+ EC- LEFT OUTER REAR VIEW MIRROR ASSEMBLY (ON LEFT FRONT DOOR) ORG/ WIRE OVERHEAD MODULE PNK IG GND WIRE PNK WIRE RED WIRE RELAY ENERGIZED RIGHT OUTER ECI- ECI+ MIRROR CONTROL ECU ASSEMBLY EC- EC+ (IN RIGHT FRONT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY (ON RIGHT FRONT DOOR) VIO WIRE WHT WIRE YEL WIRE

+B WF WIG TAIL 23 24 PNK CANH CANL WIRE 4 1 3 SIG ES MPX 40 26 19 24 IG IG PNK WIRE ACAN AUTO BLK WIRE BLK/ WHT WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM FR WASH FUSE FUSE FR WIP FUSE FRONT WASHER SWITCH FRONT WINDSHIELD WASHER MOTOR, PUMP ASSEMBLY (IN WASHER FLUID RESERVOIR) FRONT WIPER SWITCH GRN WIRE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/C LEVEL WARNING SWITCH (IN WASHER FLUID RESERVOIR) LT BLU WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) MIST OFF ORG/ WIRE OVERHEAD MODULE RAIN SENSOR (CENTER FRONT OF ROOF) RED WIRE VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER MOTOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) WINDSHIELD WIPER SWITCH ASSEMBLY EW +S +1 YEL WIRE

BRN WIRE CERTIFICATION ECU ASSEMBLY CLEARANCE WARNING ECU ASSEMBLY COMBINATION METER ASSEMBLY CRANK POSITION SENSOR SHIELD FROM FUEL LID OPENER SWITCH GLOVE REMOTE BOX OPERATION LIGHT ASSEMBLY SWITCH HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY POWER TILT MOTOR HEATER CONTROL PANEL (RADIO RECEIVER ASSEMBLY) HEIGHT CONTROL OFF SWITCH INTAKE MASS AIR FLOW METER SUB-ASSEMBLY SHIELD KNOCK CONTROL SENSOR (BANK 1, 2) SHIELD MAIN SWITCH ASSEMBLY MULTI DCM INFORMATION (TELEMATICS DISPLAY TRANSCEIVER) ASSEMBLY NCA WIRE OPTION CONNECTOR (REMOTE ENGINE STARTER) ORG/ WIRE OVERHEAD MODULE OXYGEN SENSOR (BANK 1 SENSOR 1) SHIELD OXYGEN SENSOR (BANK 1 SENSOR 2) SHIELD OXYGEN SENSOR (BANK 2 SENSOR 1) SHIELD OXYGEN SENSOR (BANK 2 SENSOR 2) SHIELD PARKING DOOR ASSIST CONTROL ECU SWITCH ASSEMBLY A/C AMPLIFIER ASSEMBLY POWER BACK DOOR MAIN SWITCH METER LIGHT MIRROR CONTROL SUB- RHEOSTAT ASSEMBLY RIGHT LEFT VISOR VISOR ASSEMBLY ASSEMBLY SATELLITE SWITCH SET SHIFT LOCK CONTROL ECU SUB-ASSEMBLY STEERING MAIN LOCK BODY ACTUATOR ECU ASSEMBLY STEERING SENSOR SUSPENSION CONTROL SWITCH THROTTLE W/ MOTOR BODY ASSEMBLY SHIELD TIRE PRESSURE WARNING RESET SWITCH VSC OFF SWITCH WATER TEMPERATURE SWITCH WHT WIRE WHT/BLK WIRE

BLK WIRE BLU WIRE BRN WIRE CANH CANL SWG COMPUTER DATA LINES SYSTEM CB+ COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM TX+ TX- PNK WIRE CV+ ECU-ACC FUSE ECU-B 2 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GAUGE 1 FUSE GPS ANTENNA GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IEEE IEEE CONNECTOR (UNDER CENTER CONSOLE) IG MACC MIN+ MIN- SGND INSTRUMENT PANEL J/B LT BLU WIRE LT GRN WIRE MACC MCI- MCO- MCVD MUTE NAVIGATION RECEIVER ASSEMBLY NCA WIRE NTSO V+ CA+ ORG/ WIRE OVERHEAD MODULE PARKING BRAKE SWITCH ASSEMBLY (LEFT END OF DASH) PKB SPD INSTRUMENT CLUSTER SYSTEM PNK WIRE RAD 1 FUSE RAD 3 FUSE REAR TELEVISION CAMERA ASSEMBLY (LOWER CENTER OF BACK DOOR) RED WIRE SGND SPI+ SPO- TELEPHONE MICROPHONE ASSEMBLY USB USBG USBV V- CGND VIO WIRE VOR- VOT+ VV+ NTSF VMTF VV- W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 4 5 GND RSSI +5 DATA 15 5 16 RDA RCO RSSI 37 13 38 14 OPN DWN CLS UP GND 9 10 CANH CANL BLK WIRE BLU WIRE BRN WIRE BZR CANL CANH CERTIFICATION ECU ASSEMBLY COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DOOR CONTROL RECEIVER (RIGHT "C" PILLAR) FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) KEY LOCK KEY UNLOCK LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT "B" PILLAR) LEFT FRONT DOOR W/ MOTOR LOCK ASSEMBLY LIN IG LT BLU WIRE LT GRN WIRE M- M+ MAIN BODY ECU INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) OPN DWN CLS UP OVERHEAD MODULE PNK 1 2 3 4 5 6 7 8 9 10 WIRE PNK CANL WIRE PNK IG WIRE RED WIRE S/ROOF FUSE SLIDING ROOF CONTROL ECU (CENTER FRONT OF ROOF) WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT SIDE OF ENGINE COMPT) YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CANH CANL SWG COMPUTER DATA LINES SYSTEM CB+ COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM TX+ TX- PNK WIRE CV+ ECU-ACC FUSE ECU-B 2 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GAUGE 1 FUSE GPS ANTENNA GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START IEEE IEEE CONNECTOR (UNDER CENTER CONSOLE) IG MACC MIN+ MIN- SGND INSTRUMENT PANEL J/B LT BLU WIRE LT GRN WIRE MACC MCI- MCO- MCVD MUTE NAVIGATION RECEIVER ASSEMBLY NCA WIRE NTSO V+ CA+ ORG/ WIRE OVERHEAD MODULE PARKING BRAKE SWITCH ASSEMBLY (LEFT END OF DASH) PKB SPD INSTRUMENT CLUSTER SYSTEM PNK WIRE RAD 1 FUSE RAD 3 FUSE REAR TELEVISION CAMERA ASSEMBLY (LOWER CENTER OF BACK DOOR) RED WIRE SGND SPI+ SPO- TELEPHONE MICROPHONE ASSEMBLY USB USBG USBV V- CGND VIO WIRE VOR- VOT+ VV+ NTSF VMTF VV- W/ LEXUS ENFORM W/O LEXUS ENFORM WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 IG 40 26 20 25 GND IG PNK WIRE BKUP LP RELAY BLK WIRE BLU WIRE BRN WIRE CB+ CGND CB+ CV+ ENGINE ROOM R/B 2 (LEFT REAR OF ENGINE COMPT) FUSE GRN WIRE HOT IN ON OR START INNER REAR VIEW MIRROR ASSEMBLY INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/C MIRRORS SYSTEM NCA WIRE OVERHEAD MODULE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) REAR TELEVISION CAMERA ASSEMBLY (LOWER CENTER OF BACK DOOR) RED WIRE REV EC+ EC- CV- CV+ PNK WIRE SIDE (LEFT OF DASH) TO BACKUP LAMPS CIRCUIT VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B SPI+ SPI- 1 2 3 4 5 6 7 USB USBG VOT+ USBV VOT- VOR- VOR+ 5 3 4 1 BBO- AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BACKUP BATTERY (MAYDAY BATTERY) (RIGHT SIDE OF DASH) BBI+ BBO- BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DCM (TELEMATICS TRANSCEIVER) (UNDER CENTER CONSOLE) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GPS ANTENNA GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILL+ GSW SIL SIG- INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE MACC MAYDAY/TEL FUSE MCO- MIN MUTE MCO+ MCO- NAVIGATION RECEIVER ASSEMBLY (W/ NAVIGATION) NCA WIRE ORG/ WIRE OVERHEAD MODULE PNK 10 4 FR- FR+ WIRE PNK WIRE RADIO 2 FUSE RADIO RECEIVER ASSEMBLY RED WIRE RIGHT FRONT SPEAKER ASSEMBLY 2 RIGHT FRONT SPEAKER ASSEMBLY 3 RRID SGND SGND MCVD MCI+ MCI- SLED SPDP SPO+ SPO- STEREO COMPONENT AMPLIFIER ASSEMBLY (LUGGAGE COMPT) TELEPHONE ANTENNA TMUT TWR- TWR+ USB USBG USBV VIO WIRE VOR- VOT+ W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE