Lexus RX III (2008-2012) computer data lines system Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 LCN+ CANH CANL PIG PGND 1 2 3 4 5 6 7 8 9 10 11 LCN+ CANH CANL PIG PGND MRH 3 4 2 DRSF DRSR 3 4 SHLD GND ASSEMBLY (UNDER CENTER CONSOLE) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPT) COMPUTER DATA LINES SYSTEM ECU ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) ECU-IGI 1 FUSE EPS FUSE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY (UNDER REAR OF VEHICLE) FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY FUSIBLE LINK BLOCK ASSEMBLY (LEFT REAR OF LUGGAGE GRN WIRE GRY WIRE HC SR HC SR BSV BSC HOT AT ALL TIMES HOT W/ INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LCN- IG FSGD MRL LCN- IG RSGD MRL LT GRN WIRE NCA WIRE PNK 23 24 CANH CANL WIRE PNK PNK WIRE POWER STEERING CONVERTER REAR ACTIVE STABILIZER CONTROL REAR ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY (UNDER REAR OF VEHICLE) RED WIRE SHG SG SV HA HB VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+BC BLK WIRE BLU WIRE BRAKE CONTROL POWER SUPPLY ASSEMBLY (REAR OF VEHICLE CHASSIS) BRAKE PEDAL STROKE SENSOR ASSEMBLY (ON BRAKE PEDAL BRACKET) BRN WIRE BZ VBZ CAPACITOR FUSE COMPUTER DATA LINES SYSTEM CSW ENA ENA FAIL FAIL FL+ FL- FUSE FUSE BOX (REAR OF LUGGAGE COMPT) GAUGE 2 FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT SIDE LBL LEFT "C" PILLAR) LEFT FRONT SPEED SENSOR (LEFT FRONT HUB ASSEMBLY) LT GRN WIRE NCA WIRE OF DASH) ORG/ WIRE OUT PNK WIRE RED WIRE RELAY ENERGIZED RL- RL+ SGSK SKG SKG SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) SKS STOP LIGHT CONTROL RELAY ASSEMBLY (LEFT END OF DASH) STPO PNK WIRE VCSK VCSK FSS VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRAKE FLUID LEVEL WARNING SWITCH (IN BRAKE FLUID RESERVOIR) BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B 3 (LEFT SIDE OF ENGINE COMPT) GRN WIRE GRY WIRE HOT AT ALL TIMES ELECTRONICALLY CONTROLLED BRAKE SYSTEM MAIN 1 FUSE HOT AT ALL TIMES ELECTRONICALLY CONTROLLED BRAKE SYSTEM MAIN 2 FUSE J/C LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE RED WIRE STOP LIGHT SWITCH ASSEMBLY (ON BRAKE PEDAL BRACKET) VSC OFF SWITCH WHT WIRE WHT/BLK WIRE YEL WIRE

BKUP LP FUSE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ENGINE ROOM R/B ASSEMBLY (LEFT FRONT FENDER APRON) FUSE GAUGE 2 FUSE GRN/RED WIRE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (ON RIGHT SIDE OF TRANSMISSION) PNK CANH WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT END OF DASH) RED WIRE STAR TRANSMISSION CONTROL SWITCH (UNDER CENTER CONSOLE) WHT WIRE WHT/BLK WIRE YEL WIRE

BACK DOOR LOCK ASSEMBLY (LOWER CENTER OF BACK DOOR) BACK DOOR OPENER SWITCH ASSEMBLY BK/DR LOCK RELAY BLK WIRE BLU WIRE CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM D/L ALT B FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LOCK LT GRN WIRE MAIN BODY ECU PNK WIRE RED WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

2 5 4 1 RSSI DATA +5 GND 5 15 16 RCO RDA RSSI ASSEMBLY (BEHIND LEFT SIDE OF DASH) BACK DOOR CONTROL SWITCH BACK DOOR LOCK ASSEMBLY (LOWER CENTER OF BACK DOOR) BACK DOOR OPENER SWITCH ASSEMBLY BLK WIRE BLU WIRE BRN WIRE BZR CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) COMPUTER CANN CANP DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CANH CANL CTY DLSW DOOR CONTROL RECEIVER DOOR CONTROL SWITCH ASSEMBLY ECU-B 1 FUSE FSW+ FUSE GRN WIRE GRY WIRE HAF HOT AT ALL TIMES HOT IN ON OR START MAIN BODY ECU HZSW IG (LEFT REAR OF LUGGAGE COMPT) ECUB GND INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT POWER BACK DOOR SENSOR (LEFT SIDE OF LIFTGATE) LOCK LT BLU WIRE LT GRN WIRE OSR OSE OSL PAWL MSW PBDS PNK 23 22 9 10 WIRE PNK FUL WIRE PNK WIRE POS POWER BACK DOOR MAIN SWITCH POWER BACK DOOR UNIT ASSEMBLY (LEFT REAR OF ROOF) POWER SIDE BACK DOOR WARNING BUZZER (IN BACK DOOR) RED WIRE RIGHT POWER BACK DOOR SENSOR TURN SIGNAL FLASHER ULSW VIO WIRE WHT WIRE WHT/BLK WIRE WIRELESS DOOR LOCK BUZZER (LEFT SIDE OF ENGINE COMPT) 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

23 24 CANH CANL BLK WIRE BLK/ WHT WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM FR WASH FUSE FR WIP FUSE FRONT WASHER SWITCH FRONT WINDSHIELD WASHER MOTOR, PUMP ASSEMBLY (IN WASHER FLUID RESERVOIR) FRONT WIPER SWITCH GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEVEL WARNING SWITCH (IN WASHER FLUID RESERVOIR) LT BLU WIRE MIST OFF PNK WIRE RED WIRE VIO WIRE WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER MOTOR ASSEMBLY (LEFT REAR OF ENGINE COMPT) WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

1 4 8 9 5 +B FSR- FSR+ BSW BGND 1 6 12 24 23 IG+ ES PBLT CANL CANH 16 24 FSR+ FSR- 18 10 LBE- LBE+ AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CANL CANH FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B ASSEMBLY (LEFT SIDE OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT "B" PILLAR) LEFT FRONT SEAT INNER BELT ASSEMBLY (UNDER DRIVER'S SEAT) LT GRN WIRE MAIN BODY ECU OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT SEAT INNER BELT ASSEMBLY (UNDER FRONT PASSENGER'S SEAT) VIO WIRE W/ W/O NAVIGATION NAVIGATION SYSTEM SYSTEM WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 IG 24 23 CANL CANH PNK WIRE 8 9 10 11 12 CLSW RDA BLK WIRE BRN WIRE CANN CANP COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ECU- IG 1 FUSE GAUGE 2 FUSE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE RED WIRE TIRE PRESSURE WARNING ANTENNA, RECEIVER (REAR CENTER OF ROOF) TIRE PRESSURE WARNING ECU (BEHIND RIGHT SIDE OF DASH) TIRE PRESSURE WARNING RESET SWITCH VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE