Lexus RX III (2008-2012) (top center of dash) Wiring diagrams

1 5 8 9 PNK WIRE 23 24 PNK CANH CANL WIRE 26 20 25 PNK IG WIRE AFS FUSE (ON LEFT SIDE OF ENGINE COMPT) AUTO TAIL BLK WIRE BLU WIRE BRN WIRE CANADA USA COMBINATION METER ASSEMBLY COMPUTER DATA INIT LINES SYSTEM COMPUTER DATA LINES SYSTEM D/L ALTB FUSE ECU- IG 1 FUSE ECU-ACC FUSE ECU-B 1 FUSE ECU-IG 1 3 FUSE ENGINE ROOM R/B ASSEMBLY FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HEAD HEAD CANL CANH COMPUTER DATA LINES SYSTEM HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT SWIVEL ECU ASSEMBLY (LEFT END W/ DISPLAY W/O DISPLAY OF DASH) HID TYPE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INNER REAR VIEW MIRROR ASSEMBLY INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT HEADLIGHT ASSEMBLY LH E LH- RH- SML LH+ LHM+ LIGHT CONTROL SWITCH LIN LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) OFF DRL OFF ORG/ WIRE PNK WIRE RED WIRE RH E RHM + RIGHT HEADLIGHT ASSEMBLY RIGHT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (AT RIGHT REAR SUSPENSION) SHB SHFL SBR SHRL SHG SHRR SMBL SMBR SMGL SMGL SMGR SMGR SML SMR SMR RH+ CANH CANL IGS IG SUSPENSION CONTROL ECU (RIGHT SIDE OF DASH) VIO WIRE W/ AIR SUSPENSION W/O AIR SUSPENSION WHT WIRE WHT/BLK WIRE YEL WIRE

2 3 1 PR PNK WIRE 3 1 4 2 RH A/C AMPLIFIER ASSEMBLY (RIGHT SIDE OF DASH) A/C PRESSURE SENSOR (RIGHT SIDE OF ENGINE COMPT) AUTOMATIC LIGHT CONTROL SENSOR (TOP RIGHT SIDE OF DASH) BLK WIRE BLOWER W/ FAN MOTOR SUB-ASSEMBLY (RIGHT SIDE OF DASH) BLU WIRE BLW BRN WIRE CANH CANL SG-2 CLTB CLTE CLTS COMPUTER DATA LINES SYSTEM COOLER THERMISTOR (AMBIENT TEMPERATURE SENSOR) (FRONT OF ENGINE COMPT) DEFOGGER SYSTEM DFG DGS ECU-B 2 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE FDFI FRONT ROOM TEMPERATURE SENSOR (CENTER OF DASH) GRN WIRE GRY WIRE HEATER 2 FUSE HEATER FUSE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) OF ENGINE COMPT) ORG/ WIRE PNK 1 2 3 4 5 6 7 8 9 10 11 12 13 IG+ WIRE PNK FDEF WIRE PNK WIRE PRE PNK WIRE RED WIRE RELAY ENERGIZED RH TR SEATS SYSTEM SMOG VENTILATION SENSOR (IF EQUIPPED) (CENTER FRONT OF ENGINE COMPT) SOLAR SENSOR SVDB SVPB SVDS SVPS SW 1 TAM DGS TSL TSP TSD SG-1 TSR VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU 1 2 INTERIOR LIGHTS SYSTEM RCYL LSWR DOOR LOCKS SYSTEM 12 13 14 15 PKB FFGO TRLY HRLY HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM 24 25 26 27 28 29 30 31 32 GSW DRL 5 6 PBDS TRUNK, TAILGATE, FUEL DOORS SYSTEM 8 7 CANP CANN 8 9 PNK CANN CANP WIRE ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM BECU ALTB IG BLK WIRE BLU WIRE BRN WIRE D/L ALT B FUSE DMDR DMON INTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM ECU, SWITCH ASSEMBLY (LEFT SIDE OF DRIVER'S SEAT CUSHION) ECU- IG 1 FUSE EXTERIOR LIGHTS SYSTEM HZSW FRONT DOOR) FUSE GRN WIRE GRY WIRE HCTY BZR HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM RLEW CANP CANN HORN HORNS SYSTEM HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILE FLCY FRCL FRCY LSWL TR+ ACTG ACT- ACT+ ACTD 2 3 4 5 6 7 8 9 10 IND INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT FRONT POSITION CONTROL LEFT FRONT POWER WINDOW LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT LEFT REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY (IN LEFT REAR DOOR) LIN LIN 1 LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT POWER WINDOW RIGHT REAR POWER WINDOW REGULATOR SLIDING ROOF CONTROL ECU (CENTER FRONT OF ROOF) SUPPLEMENTAL RESTRAINTS SYSTEM HEADLIGHTS SYSTEM VIO WIRE W/ POWER BACK DOOR W/O POWER BACK DOOR WHT WIRE WHT/BLK WIRE WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HDLO LLEW ACAN YEL WIRE

2 17 3 LSWR HZSW 21 20 BZR HCTY 4 2 5 FRCY FLCY LSWL SH ACTG BACK DOOR LOCK ASSEMBLY (W/O POWER BACK DOOR) (LOWER CENTER OF BACK DOOR) BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM D DR UNLOCK RELAY D/L ALTB FUSE D/L SOURCE RELAY DETECTION DOOR LOCK RELAY DR UNLOCK RELAY ECU-ACC FUSE ECU-IGI 1 FUSE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HORN HORNS SYSTEM HOT AT ALL TIMES HOT W/ IND INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) KEY LCTY LEFT FRONT DOOR LOCK MOTOR (IN DRIVER'S DOOR) LOCK KEY LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) ORG/ WIRE PNK LSFL BCTY RCTY HAZ CANL CANH WIRE PNK WIRE RED WIRE RIGHT REAR DOOR COURTESY LIGHT SWITCH (AT RIGHT REAR "C" PILLAR) RIGHT REAR DOOR LOCK MOTOR (IN RIGHT REAR DOOR) UNLOCK VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE DETECTION ECU-B 2 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY GRN WIRE GRY WIRE HEATER CONTROL PANEL (RADIO RECEIVER ASSEMBLY) HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) IP J/B FUSE LEFT FRONT DOOR COURTESY LIGHT SWITCH (AT LEFT "B" PILLAR) LEFT REAR DOOR COURTESY LIGHT SWITCH (AT LEFT REAR "C" PILLAR) LOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT DOOR LOCK MOTOR (IN FRONT PASSENGER'S DOOR) SECURITY IND STOP FUSE STOP LIGHT SWITCH ASSEMBLY (ON BRAKE PEDAL BRACKET) UNLOCK WHT WIRE WHT/BLK WIRE YEL WIRE

14 16 64 15 PNK WIRE AGND ANTI-THEFT SYSTEM BLK WIRE BLU WIRE BRN WIRE CANH CANL SWIL TXCT CODE CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) CLGB COMPUTER DATA LINES SYSTEM DATA DOOR CONTROL RECEIVER (RIGHT "C" PILLAR) DOORS SYSTEM FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE IG CUTB INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LIN LT BLU WIRE LT GRN WIRE ORG/ WIRE OUTSIDE LUGGAGE ELECTRICAL KEY ANTENNA (BEHIND CENTER OF REAR BUMPER) PNK WIRE RCO RDA RSSI REAR INDOOR ELECTRICAL KEY OSCILLATOR (FRONT OF LUGGAGE COMPT) RED WIRE RELAY ENERGIZED RIGHT ELECTRICAL KEY ANTENNA (FRONT PASSENGER'S DOOR OUTSIDE HANDLE) RSSI SENS TRG+ TRUNK, TAILGATE, FUEL VIO WIRE WHT WIRE WHT/BLK WIRE 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

14 13 TRLY FFGO 15 25 HRLY DRL 2 4 11 FLCY FRCY 6 5 3 2 1 CLTB CLTS CLTE 8 5 30 28 29 27 22 21 20 HF HU TAIL 9 10 8 21 CANP CANN RLEW LLEW COMPUTER DATA LINES SYSTEM AIR CONDITIONING TSR TSL SYSTEM AUTO TAIL OFF AUTOMATIC LIGHT CONTROL SENSOR (IF EQUIPPED) (TOP RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CANADA USA D/L ALTB FUSE DIMMER SWITCH ECU-ACC FUSE ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FOG LIGHT SWITCH FR FOG FUSE FR FOG RELAY FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HEAD HEAD FFOG CLTE CLTS CLTB PNK WIRE HEADLAMP DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LCTY INTERIOR LIGHTS 6 19 SYSTEM RCTY BCTY LEFT FOG LIGHT ASSEMBLY LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) ORG/ WIRE PARKING BRAKE SWITCH PD FUSE PNK WIRE RED WIRE RIGHT FOG LIGHT ASSEMBLY TAIL AUTO HEAD OFF DRL OFF DRL OFF TAIL FUSE TAIL RELAY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+S SI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 IG 64 15 56 54 PNK WIRE BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CS CHK DCM (TELEMATICS TRANSCEIVER) DOWN ENGINE CONTROLS SYSTEM PNK WIRE ENGINE OIL PRESSURE SWITCH ASSEMBLY (LOWER LEFT FRONT OF ENGINE) ENTER FR FE TX+ FUEL PUMP, FUEL SENDER (TOP OF FUEL TANK) GAUGE 2 FUSE GRN WIRE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEVEL WARNING SWITCH ASSEMBLY LT BLU WIRE LT GRN WIRE LUGGAGE COMPT) MENU MSSL ET ES RHUP RHDW A/B NAVIGATION RECEIVER ASSEMBLY ORG/ WIRE P/SB PBLT PNK CANH CANL WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RADIO RECEIVER ASSEMBLY RED WIRE RIGHT STEERING PAD SWITCH SEATS SYSTEM SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) SOUND SYSTEMS SPDI SPDP SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STEREO COMPONENT AMPLIFIER ASSEMBLY VIO WIRE W/ NAVIGATION W/O NAVIGATION WATER TEMPERATURE SWITCH (UNDER FRONT CENTER OF VEHICLE) WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CANN COMPUTER DATA LINES SYSTEM ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MSW MULTIPLEX TILT, TELESCOPIC ECU (AT BASE OF STEERING COLUMN) ORG/ WIRE PNK WIRE POWER TILT MOTOR (ON STEERING COLUMN) RED WIRE TELESCO SHORT TELESCO STRETCH TELESCOPIC MOTOR TELESCOPIC SENSOR TEM+ TEM- TI, TE FUSE TILT DOWN TILT UP TILT, TELESCOPIC STRETCH TIM TIS VCE TES VCI WHT WIRE WHT/BLK WIRE YEL WIRE