Lexus RX III (2008-2012) (left side 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

8 5 4 9 +B MJ 9 14 16 RV BACKUP BKUP LP FUSE BKUP LP RELAY BLK WIRE BLU WIRE BRN WIRE ENGINE ROOM R/B 2 (LEFT REAR OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE HOT IN ON OR START HOT W/ IGCT MAIN RELAY ENERGIZED IGCT 3 FUSE LEFT REAR LIGHT ASSEMBLY LT GRN WIRE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (ON TRANSMISSION) PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RED WIRE RIGHT REAR LIGHT ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 CANH 1 2 3 4 5 6 7 8 PNK WIRE 1 2 3 4 5 6 ROUT 1 2 3 4 5 CBP 1 2 PIG PGND 1 2 PIG VGND ASST BLK WIRE BLU WIRE CBPE CEF CEPF COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRSF DRSR IG DDOK ASST ECU-B 2 FUSE ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF EPS FUSE BLOCK ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) FSGD FUSE FUSIBLE LINK GAUGE 2 FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START HV BATTERY JUNCTION BLOCK ASSEMBLY (LEFT SIDE OF LUGGAGE COMPT) IG+ CANL INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE MOTOR RESOLVER MRH MRL+ NCA WIRE ORG/ WIRE PNK CANH WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) POWER STEERING CONVERTER (UNDER CENTER CONSOLE) POWER STEERING ECU ASSEMBLY (LEFT END OF DASH) POWER STEERING MOTOR POWER STEERING MOTOR ASSEMBLY (INTEGRAL TO POWER POWER STEERING TORQUE SENSOR (INTEGRAL TO POWER STEERING ECU ASSEMBLY) PSOK RCOS RSIN REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) RED WIRE RGND RSGD SHLD GND SKID CONTROL ECU (RIGHT SIDE OF DASH) STEERING ECU ASSEMBLY) STEERING SENSOR TORQUE SENSOR WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 IG ABSORBER CONTROL SWITCH AIR SUS FUSE BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DOWN FUSE GRN WIRE GRY WIRE HEIGHT CONTROL VALVE HARNESS ASSEMBLY HOT AT ALL TIMES HOT IN RUN OR START ENGINE ROOM R/B ASSEMBLY (LEFT FRONT FENDER APRON) INSTRUMENT PANEL J/B LDNS LUPS LEFT FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (LEFT REAR OF ENGINE COMPT) LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (RIGHT REAR OF ENGINE COMPT) RM+ RM+ SHFR SBR SGR SHB SHFL SHFR SHG SHRL SLRL SLRR RM- SUSPENSION CONTROL ECU (RIGHT SIDE OF DASH) SUSPENSION CONTROL SWITCH TD DNSW UPSW VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 OUT 1 2 3 4 5 6 7 8 IG LR LL PNK WIRE 1 23 24 2 IG+ CANH CANL PNK WIRE 31 2 22 14 25 STPO AUTO BLK WIRE BLU WIRE BRN WIRE CANADA CANL CANH COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRL OFF ECM (LEFT SIDE OF ENGINE COMPT) EL ER ENGINE ROOM GAUGE 2 FUSE GRN WIRE GRY WIRE HAZ FUSE HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START LEFT HEADLIGHT ASSEMBLY LIGHT CONTROL LT BLU WIRE LT GRN WIRE MARKER OFF PARKING PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT END OF DASH) RED WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (IN RIGHT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY SIDE SIDE MARKER SKID CONTROL ECU W/ ACTUATOR ASSEMBLY (RIGHT REAR OF ENGINE COMPT) STOP FUSE R/B ASSEMBLY (LEFT FRONT FENDER APRON) STOP LIGHT CONTROL RELAY ASSEMBLY (LEFT END OF DASH) STP +B SWITCH SWITCH ASSEMBLY TAIL TOWING FUSE TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) TRN+ TRNI TURN TURN SIGNAL FLASHER SIGNAL ASSEMBLY (LEFT SIDE OF DASH) TURN SWITCH USA VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

AIR BAG SENSOR ASSEMBLY BACK DOOR CONTROL SWITCH BACK DOOR OPENER SWITCH ASSEMBLY BLK WIRE BRN WIRE CENTER STOP LIGHT ASSEMBLY COMBINATION METER ASSEMBLY FRONT POWER POINT SOCKET ASSEMBLY ID CODE BOX INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/C LEFT ELECTRICAL KEY ANTENNA LEFT FRONT DOOR W/ MOTOR LOCK ASSEMBLY LEFT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LEFT LICENSE PLATE LIGHT ASSEMBLY LEFT OUTER MIRROR CONTROL ECU ASSEMBLY LEFT REAR LIGHT ASSEMBLY MAIN BODY ECU MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY NCA WIRE OPTION CONNECTOR (GLASS BREAKAGE SENSOR ECU ASSEMBLY) POWER MANAGEMENT CONTROL ECU POWER SLIDE BACK DOOR WARNING BUZZER REAR WINDOW DEFOGGER REAR WIPER, MOTOR, BRACKET ASSEMBLY RIGHT REAR LIGHT ASSEMBLY SPIRAL CABLE SUB-ASSEMBLY TRANSMISSION CONTROL SWITCH TURN SIGNAL SEAT FLASHER HEATER POWER ASSEMBLY SWITCH SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YAW RATE SENSOR ASSEMBLY

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

1 2 DEF- DEF+ 38 11 12 DFG CANH CANL A/C AMPLIFIER ASSEMBLY (RIGHT SIDE OF DASH) BLK WIRE BLK/YEL WIRE BLU WIRE COMPUTER DATA LINES SYSTEM ENGINE ROOM J/B ASSEMBLY (LEFTSIDE OF ENGINE COMPT) F/L DOOR FUSE F/R DOOR FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HTR INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) LEFT OUTER REAR VIEW MIRROR ASSEMBLY (ON LEFT FRONT DOOR) LT GRN WIRE PNK WIRE REAR WINDOW DEFOGGER RED WIRE RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (IN RIGHT FRONT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY (ON RIGHT FRONT DOOR) RR DEF FUSE RR DEF RELAY ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ANTI-THEFT SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE C/OPN RELAY COMPUTER DATA LINES SYSTEM INSTRUMENT CLUSTER SYSTEM COOLING FANS SYSTEM RFC LGND CCS STA CRUISE CONTROL SYSTEM ECM (LEFT SIDE OF ENGINE COMPT) EFI 1 FUSE EFI MAIN F/PMP EFI 2 FUSE FUSE FUSE EFI MAIN RELAY ENGINE ROOM R/B ASSEMBLY (LEFT FRONT FENDER APRON) F/PUMP RELAY FPR MPMP FUEL PUMP, FUEL SENDER GAUGE ASSEMBLY (TOP OF FUEL TANK) GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER SYSTEM LEFT QUARTERPANEL) LT BLU WIRE LT GRN WIRE NEO ORG/ WIRE PNK ANTI-THEFT SYSTEM IMI WIRE PNK CRUISE CONTROL SYSTEM WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT END OF DASH) RED WIRE SFTD IGSW IMO VPMP STP CCHG SFTU TACH TC TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) TRANSMISSION CONTROL SWITCH (UNDER CENTER CONSOLE) VCPA EPA PNK WIRE VIO WIRE WARNING SYSTEMS COMPUTER DATA LINES SYSTEM WHT WIRE WHT/BLK WIRE YEL WIRE

A/F FUSE A/F RELAY BKUP LP FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CANISTER PRESSURE SENSOR CANISTER PUMP MODULE (CENTER REAR OF VEHICLE) COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ECU-B 1 FUSE ENGINE ROOM J/B ASSEMBLY (LEFT FRONT FENDER APRON) ENGINE ROOM R/B ASSEMBLY (LEFT FRONT FENDER APRON) EXCD FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B ASSEMBLY (LEFT SIDE OF DASH) LEAK DETECTION PUMP LT BLU WIRE LT GRN WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANSMISSION) PNK WIRE RED WIRE STOP FUSE STOP LIGHT SWITCH ASSEMBLY (ON BRAKE PEDAL ASSEMBLY) VENT VALVE VIO WIRE VOLTAGE INVERTER ASSEMBLY WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE