Toyota Prius III (2009-2011) main body ecu (behind left end of dash) Wiring diagrams

13 14 CANL CANH 30 11 12 BECU BLK WIRE BLU WIRE BRAKE PEDAL STROKE SENSOR ASSEMBLY (ABOVE BRAKE PEDAL) BRN WIRE COMPUTER DATA LINES SYSTEM ECU-B FUSE ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) ESSI GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGN FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION CONTROL, PANEL ASSEMBLY HAZARD SWITCH LEFT FRONT SPEED SENSOR (LEFT FRONT WHEEL) LEFT REAR SPEED SENSOR (LEFT REAR WHEEL) MAIN BODY ECU (BEHIND LEFT END OF DASH) OF DASH) ORG/ WIRE OUT PARKING BRAKE SWITCH (BASE OF PARKING BRAKE LEVER) PNK WIRE RED WIRE RIGHT FRONT SPEED SENSOR (RIGHT FRONT WHEEL) RIGHT REAR SPEED SENSOR (RIGHT REAR WHEEL) SKG STOP FUSE STOP LIGHT SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) VCSK WHT WIRE WHT/BLK WIRE YEL WIRE

2 3 PR 2 4 1 IG PCL IG+ 20 22 13 14 CLTB CLTE CANL CANH 6 3 1 CLTE CLTB NSHA A/C AMPLIFIER ASSEMBLY (BEHIND CENTER OF DASH) A/C EVAPORATOR TEMPERATURE SENSOR A/C BLOWER ASSEMBLY (BEHIND CENTER OF DASH) A/C CONTROL ASSEMBLY A/C PRESSURE SENSOR (RIGHT REAR OF ENGINE COMPT) A/C SOLAR SENSOR AUTOMATIC LIGHT CONTROL SENSOR BLK WIRE BLU WIRE BLW BRN WIRE BUS G BUS B BUS SGA TEA CANH CANL SG-2 GND ECOS COMPT) COMPUTER DATA LINES SYSTEM CONNECTOR HOUSING COLOR (BLACK) CONNECTOR HOUSING COLOR (BLUE) CONNECTOR HOUSING COLOR (RED) WIRE DAMPER SERVO MOTOR (AIR INLET) DAMPER SERVO MOTOR (AIR MIX) DAMPER SERVO MOTOR (AIR VENT MODE) DEFOGGER SYSTEM ECO MODE SWITCH ECU ECU- IG 1 FUSE ECU-ACC FUSE ECU-B FUSE END OF DASH) ENGINE ROOM R/B (LEFT SIDE OF ENGINE FUSE GRN WIRE HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED IG BECU IG+ ILL+ ILL- GND IGN FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION CONTROL, PANEL ASSEMBLY ION GENERATOR SUB-ASSEMBLY J/B 3 (BEHIND LEFT SIDE OF DASH) J/B 3 (BEHIND LEFT SIDE OF DASH) 1 2 3 4 5 6 7 8 LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) ORG/ WIRE PNK PCSW WIRE PNK PVSW SSLR IDH WIRE PNK WIRE PRE RDEF RED WIRE RELAY ENERGIZED RELAY ENERGIZED INSTRUMENT PANEL J/B A/C (BEHIND FUSE LEFT END OF DASH) TAM TEMPERATURE SENSOR AMBIENT (BEHIND CENTER OF FRONT BUMPER) TS SG-1 TX+ SWO VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU 13 22 CANH CANL 13 5 PNK CANH CANL WIRE ACT- ACT+ ACTD BECU ALTB IG BLK WIRE BLU WIRE BRN WIRE CANL CANH CENTER AIR BAG SENSOR ASSEMBLY (UNDER FRONT OF CENTER CONSOLE) CERTIFICATION ECU (BEHIND RIGHT SIDE OF DASH) COMBINATION METER ASSEMBLY DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) DOOR 1 FUSE DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS HEADLIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS LSFR BCTY CLTB CLTS CLTE BDSU DRL FSPT ECM (ENGINE CONTROL MODULE) (LEFT SIDE OF ENGINE COMPT) ECU- IG 1 FUSE FFOG HEADLIGHTS SYSTEM HEAD TAIL FRCY LSR TR+ FUSE GRN WIRE GRY WIRE HCTY BZR DIM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM POWER WINDOWS SYSTEM HOT AT ALL TIMES HOT AT ALL TIMES ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) ECU-B FUSE HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) J/B 3 (BEHIND LEFT SIDE OF DASH) LLEW LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END MAIN BODY ECU (BEHIND LEFT END OF DASH) OF DASH) ORG/ WIRE PKB FFGO TRLY HRLY PNK PNK WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (BEHIND RIGHT POWER STEERING ECU (BEHIND LEFT SIDE OF DASH) RED WIRE RLEW SIDE OF DASH) STEERING SENSOR (ON STEERING COLUMN) TRANSMISSION CONTROL ECU (BEHIND RIGHT SIDE OF DASH) TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (BELOW CENTER CONSOLE) YEL WIRE

10 11 PNK CANH CANL WIRE 12 11 LBE- LBE+ 13 12 FSR- FSR+ 5 9 8 4 PNK WIRE BLK WIRE BLU WIRE BRAKE LEVER) BRN WIRE BUCKLE SWITCH LEFT FRONT SEAT INNER BELT ASSEMBLY (UNDER DRIVER'S SEAT) CAN I.C CENTER AIR BAG SENSOR ASSEMBLY (UNDER FRONT OF CENTER CONSOLE) COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM ECU-B FUSE ENGINE ROOM R/B (LEFT SIDE OF ENGINE COMPT) GAUGE FUSE GRN WIRE HOT AT ALL TIMES HOT IN ON OR START IGN FUSE INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) J/B 3 (BEHIND LEFT SIDE OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) PARKING BRAKE SWITCH (BASE OF PARKING PASSENGER SEAT BELT WARNING LIGHT ASSEMBLY PBLT PNK WIRE RED WIRE VIO WIRE WHT WIRE YEL WIRE

10 9 PNK CANL CANH WIRE 11 10 CANL CANH PNK WIRE 13 14 CANL CANH 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BAT 2 3 CANL CANH 3 2 CANL CANH 3 4 CANL CANH 5 15 INIT PRST 7 1 CANL CANH BLK WIRE BLU WIRE BRN WIRE CANL TC TS PNK WIRE CERTIFICATION ECU (BEHIND RIGHT SIDE OF DASH) COMBINATION METER ASSEMBLY DATA LINK CONNECTOR 3 (UNDER LEFT SIDE OF DASH) GRN WIRE GRY WIRE HEADLIGHT LEVELING ECU (BEHIND RIGHT END OF DASH) HOT AT ALL TIMES INSTRUMENT OBD PANEL J/B FUSE (BEHIND LEFT END OF DASH) J/B 3 (BEHIND LEFT SIDE OF DASH) J/B 4 (BEHIND RIGHT SIDE OF DASH) LT GRN WIRE LVL SIL CANH SG CG PNK WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) NAVIGATION RECEIVER ASSEMBLY (W/ NAVIGATION SYSTEM) OCCUPANT DETECTION ECU (UNDER FRONT PASSENGER'S SEAT) ORG/ WIRE PNK PNK WIRE PNK SIL WIRE PNK WIRE POWER STEERING ECU (BEHIND LEFT SIDE OF DASH) RED WIRE SIDE OF DASH) SIL SKID CONTROL ECU (LEFT REAR OF ENGINE COMPT) STEERING SENSOR (ON STEERING COLUMN) TELEMATICS TRANSCEIVER (W/ SAFETY CONNECT) (BEHIND RIGHT TIRE PRESSURE WARNING ECU (BEHIND RIGHT SIDE OF DASH) TOP OF ENGINE) VIO WIRE WHT WIRE WHT/BLK WIRE YAW RATE SENSOR (BELOW CENTER CONSOLE) YEL WIRE

14 13 TRLY FFGO 21 5 LLEW RLEW 25 12 2 4 11 DRL PKB FLCY FRCY 6 19 21 20 22 5 8 30 28 29 27 13 14 LRCY BCTY CLTS CLTB CLTE HU HF TAIL ALTB IG AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CLTS CLTE CLTB COMPUTER DATA LINES SYSTEM DC/DC FUSE DIMMER SWITCH DOOR 1 FUSE ECU- IG 1 FUSE ECU-ACC FUSE ENGINE ROOM J/B ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) FLASH LOW HIGH FOG LIGHT LIGHT CONTROL SWITCH SWITCH FR FOG FUSE FR FOG RELAY GAUGE FUSE GRN WIRE HEAD FFOG CANL CANH HEAD TAIL OFF AUTO HEADLIGHT DIMMER SWITCH ASSEMBLY HLPL HLPR HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION RELAY LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) PNK WIRE RED WIRE TAIL FUSE TAIL RELAY TAIL HEAD OFF AUTO VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

14 13 TRLY FFGO 2 4 FLCY FRCY 21 5 LLEW RLEW 6 19 21 20 22 5 8 30 28 29 27 13 14 LRCY BCTY CLTS CLTB CLTE HU HF TAIL ALTB IG AUTOMATIC LIGHT CONTROL SENSOR (UPPER RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CLTB CLTS CLTE COMPUTER DATA LINES SYSTEM DC/DC FUSE DIMMER SWITCH DOOR 1 FUSE ECU- IG 1 FUSE ECU-ACC FUSE ENGINE ROOM J/B ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) FOG LIGHT SWITCH FR FOG FUSE FR FOG RELAY GAUGE FUSE GRN WIRE HEAD FFOG CANL CANH HEAD OFF HEADLIGHT DIMMER SWITCH ASSEMBLY HLPL HLPR HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION RELAY J/B 3 (BEHIND LEFT SIDE OF DASH) LIGHT CONTROL SWITCH LT GRN WIRE MAIN BODY ECU (BEHIND LEFT END OF DASH) PNK WIRE RED WIRE TAIL TAIL FUSE TAIL RELAY TAIL HEAD OFF AUTO AUTO VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE