Lexus RX III (2008-2012) power management control ecu (left side of dash) Wiring diagrams

1 2 3 4 5 6 CLK DIN DOUT STBI GND 1 2 PE PB 12 25 CANH CANL 3 19 31 30 20 WP CLK ITE ETI STB A/C AMPLIFIER ASSEMBLY (RIGHT SIDE OF DASH) A/C BLOWER ASSEMBLY (RIGHT SIDE OF DASH) A/C EVAPORATOR TEMPERATURE SENSOR A/C W/P A/C W/P RELAY ACPB ACPE B+ BUS BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BUS - BUS G COMPUTER DATA LINES SYSTEM CONNECTOR HOUSING COLOR CONNECTOR HOUSING COLOR (BLACK) CONNECTOR HOUSING COLOR (BLUE) CONNECTOR HOUSING COLOR (GREEN) COOLING FAN ECU 1 (LEFT FRONT OF ENGINE COMPT) COOLING FAN ECU 2 (RIGHT FRONT OF ENGINE COMPT) DAMPER SERVO MOTOR (AIR INLET) DAMPER SERVO MOTOR (AIR MIX DRIVER SIDE) DAMPER SERVO MOTOR (AIR MIX FRONT PASSENGER SIDE) DAMPER SERVO MOTOR (AIR VENT MODE) ECM (RIGHT FRONT OF ENGINE COMPT) ECU HEATER 2 FUSE FUSE EFI ENGINE COOLANT TEMPERATURE SENSOR (TOP REAR OF ENGINE) ENGINE ROOM J/B ASSEMBLY (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B 3 (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRN/RED WIRE HEATER WATER PUMP ASSEMBLY (LEFT SIDE OF ENGINE COMPT) HOT AT ALL TIMES INVERTER ASSEMBLY W/ CONVERTER (LEFT SIDE OF ENGINE COMPT) LT GRN WIRE ORG/ WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RDI FAN 1 RDI FAN 2 RDI FAN RELAY 1 RDI FAN RELAY 2 RED WIRE RED/BLK WIRE RELAY ENERGIZED RFC TOP OF ENGINE) VIO WIRE W/ MOTOR COMPRESSOR ASSEMBLY (RIGHT FRONT OF ENGINE COMPT) 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 13 14 15 16 17 18 FLCL DIM LCTY LCYL AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BLK WIRE BLU WIRE BRN WIRE CANL CANH CANN CANP CERTIFICATION NAVIGATION ECU ASSEMBLY RECEIVER (RIGHT SIDE ASSEMBLY OF DASH) COMBINATION METER ASSEMBLY CSPT DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM INTERIOR LIGHTS SYSTEM ECM (RIGHT FRONT OF ENGINE COMPT) GRN WIRE GRY WIRE HEAD TAIL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM DOOR LOCKS SYSTEM HEADLIGHTS SYSTEM HU RCTY LSFL HF INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM LSFR BCTY CLTB CLTS CLTE LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) ORG/ WIRE PNK FFOG WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) POWER STEERING ECU ASSEMBLY (LEFT END OF DASH) RED WIRE SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) STEERING SENSOR (IN STEERING COLUMN) VIO WIRE W/ POWER BACK DOOR W/O POWER BACK DOOR WHT WIRE YAW RATE SENSOR ASSEMBLY (UNDER CENTER FLOOR CONSOLE) YEL WIRE

11 35 34 TC 13 22 CANH CANL 16 15 14 13 12 11 10 9 8 7 6 BAT 4 3 2 1 CG 42 12 25 26 13 TC CANH CANL CAN- CAN+ 9 10 13 14 CANP CANN CANL CANH A/C AMPLIFIER (RIGHT SIDE OF DASH) (RIGHT SIDE OF DASH) AIRBAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BLK WIRE BLU WIRE BRN WIRE CANL TC TS CANN CANP CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) DCM (TELEMATICS TRANSCEIVER) (UNDER CENTER CONSOLE) DIA ECM (RIGHT FRONT OF ENGINE COMPT) GRN WIRE GRY WIRE HEADLIGHT SWIVEL ECU ASSEMBLY (LEFT END OF DASH) HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) INIT LEFT FRONT POSITION CONTROL ECU, SWITCH ASSEMBLY LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) LIN LIN 1 LIN 2 LINK CONNECTOR) (UNDER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE LVL SIL CANH MAIN BODY ECU INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) OBD FUSE OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) ORG/ WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RED WIRE SIL SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) TOP OF ENGINE) VIO WIRE W/ POWER BACK DOOR W/O POWER BACK DOOR WHT WIRE WHT/BLK WIRE YEL WIRE

+B MREL 10 11 14 35 34 17 COMPUTER DATA LINES SYSTEM 21 22 12 RR- RR+ RSS 23 22 13 FR- FR+ 25 12 4 3 21 16 CANL CANH 32 31 11 FL- FL+ FSS 4 16 STPO 6 35 19 27 26 34 18 17 MREL 85 86 118 119 28 29 108 VTA BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ECM (RIGHT FRONT OF ENGINE COMPT) EFI EFI MAIN RELAY MAIN FUSE ENGINE ROOM R/B 2 ASSEMBLY (LEFT REAR OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE HOT AT ALL TIMES HV R/B 1 FUSE IGCT 3 FUSE IGCT MAIN RELAY LEFT FRONT SPEED SENSOR (LEFT FRONT HUB ASSEMBLY) LEFT REAR SPEED SENSOR (LEFT REAR HUB ASSEMBLY) LT GRN WIRE M- M+ 1 2 3 5 4 6 NCA WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (ON TRANSMISSION) PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RED WIRE RIGHT FRONT SPEED SENSOR (RIGHT FRONT HUB ASSEMBLY) RIGHT REAR SPEED SENSOR (RIGHT REAR HUB ASSEMBLY) RL- RL+ SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) STOP FUSE THROTTLE W/ MOTOR BODY ASSEMBLY (RIGHT REAR OF ENGINE) VCTA ETA M+ M- VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B MREL 25 12 4 3 21 16 CANL CANH 6 11 35 19 27 26 34 18 17 MREL 85 86 118 119 28 29 108 VTA ASSEMBLY (IN STEERING COLUMN) BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CRUISE CONTROL MAIN SWITCH ECM (RIGHT FRONT OF ENGINE COMPT) EFI EFI MAIN RELAY MAIN FUSE ENGINE ROOM R/B 2 ASSEMBLY (LEFT REAR OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) GRN WIRE HOT AT ALL TIMES HV R/B 1 FUSE IGCT 3 FUSE IGCT MAIN RELAY LT GRN WIRE M- M+ 1 2 3 5 4 6 NCA WIRE ON OFF ORG/ WIRE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (ON TRANSMISSION) PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RED WIRE SPIRAL CABLE SUB- STEERING PAD SWITCH ASSEMBLY STOP FUSE THROTTLE W/ MOTOR BODY ASSEMBLY (RIGHT REAR OF ENGINE) VCTA ETA M+ M- WHT WIRE WHT/BLK 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

AGND ANTENNA COIL BLK WIRE BLU WIRE BRN WIRE BTH+ BTH- CODE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ECU-B 1 FUSE ELECTRONIC POWER STEERING SYSTEM ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM COMPUTER DATA LINES SYSTEM ENGINE CONTROLS SYSTEM SUPPLEMENTAL RESTRAINTS SYSTEM ENGINE CONTROLS SYSTEM ENGINE ROOM J/B ASSEMBLY (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES IMMOBI FUSE IMO IMI CCS PNK WIRE INDS INDS INDW INDW LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK CANH CANL WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) POWER SWITCH PSOK RED WIRE S-HORN FUSE S-HORN RELAY SECURITY HORN ASSEMBLY (LEFT FRONT OF ENGINE COMPT) SFTD SFTU SHIFT INTERLOCK SYSTEM SL/R SLP SMRG SMRP SMRB SPDI SWIL THB ABFS ETHB TRANSMISSIONS SYSTEM TXCT VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 B+ 20 21 11 IMO IMI PNK WIRE BLK WIRE BRN WIRE CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) EFII EFIO PNK WIRE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) HOT AT ALL TIMES IMMOBI FUSE ID CODE BOX (LEFT SIDE OF DASH) INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LIN LT GRN WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RED WIRE STEERING LOCK ACTUATOR ASSEMBLY (ON STEERING COLUMN) VIO WIRE WHT/BLK 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