Toyota Prius III (2009-2011) headlight dimmer switch assembly Wiring diagrams

+ECU 4 1 LED TYPE EXCEPT LED TYPE 5 2 LED TYPE EXCEPT LED TYPE BLK WIRE BLU WIRE BRN WIRE ECU-IG EL ER FRCY FLCY BECU FUSE GRN WIRE HAZARD SWITCH HEADLIGHT DIMMER SWITCH ASSEMBLY HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (BEHIND LEFT END OF DASH) INTEGRATION CONTROL, PANEL ASSEMBLY J/B 3 (BEHIND LEFT SIDE OF DASH) 1 2 3 4 5 6 7 8 IG LR LL LEFT LEFT FRONT TURN SIGNAL LIGHT LEFT HEADLIGHT ASSEMBLY LRCY TAIL GND BCTY MAIN BODY ECU MARKER OFF ORG/ WIRE PARKING PNK WIRE RIGHT FRONT TURN SIGNAL LIGHT RIGHT HEADLIGHT ASSEMBLY TAIL FUSE TAIL LIGHT CONTROL SWITCH HEAD AUTO TAIL RELAY TURN SIGNAL FLASHER (BEHIND LEFT END OF DASH) TURN SWITCH RIGHT VIO WIRE WHT WIRE WHT/BLK WIRE 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

1 2 3 4 5 6 HOLD 31 22 32 ALTB AUTO OFF BLK WIRE BLU WIRE BRN WIRE DOOR 1 FUSE ECU- IG 1 FUSE ECU-ACC FUSE ECU-B FUSE ECU-IG 2 FUSE ENGINE ROOM J/B (LEFT SIDE OF ENGINE COMPT) ENGINE ROOM R/B (LEFT SIDE FRONT WASHER SWITCH FRWA PB GAUGE FUSE GRN WIRE H-LP CLN FUSE HEAD HEADLIGHT CLEANER MOTOR, PUMP (RIGHT FRONT CORNER OF ENGINE COMPT) HEADLIGHT CLEANER RELAY (NEAR RIGHT HEADLIGHT ASSEMBLY) HEADLIGHT CLEANER SWITCH ASSEMBLY HEADLIGHT DIMMER SWITCH ASSEMBLY 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 P/I 2 FUSE OF ENGINE COMPT) RED WIRE RELAY ENERGIZED WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CCS HITP GND COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DRIVING SUPPORT ECU (BEHIND RIGHT SIDE OF DASH) FRONT WASHER FRONT WIPER SWITCH SWITCH FUSE BLOCK (BEHIND LEFT KICK PANEL) GRN WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY INT LO J/B 3 (BEHIND LEFT SIDE OF DASH) J/B 4 (BEHIND RIGHT SIDE OF DASH) LEFT OFF MIST HI PNK WIRE RED WIRE RIGHT SPSW STP+ TURN SWITCH VIO WIRE WASH CCHG WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY WIP 3 FUSE WIP 4 FUSE WNKR WNKL PNK WIRE YEL WIRE