Toyota·Prius·2018 Toyota Prius·Wiring
Wiring diagram

2018 Toyota Prius — power distribution

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Power distribution

A V P M L E D B 5A 120A 30A 10A 10A 10A 10A 30A 30A 10A 10A 10A 10A 20A 15A 50A 10A 60A 30A 40A 30A 25A 30A 10A 30A 80A 140A ENGINE ROOM R/B 1 ENGINE ROOM J/B 1 BATTERY R/B ASSEMBLY 4 ENGINE ROOM J/B 1 GROUND J/C 1 (A56) D3 C1 D1 A9 A10 5 A8 A7 A61 A60 A59 13 14 AF1 5 3 1 2 A62 WHT BLK GRY BLU WHT/BLK WHT/BLK VIO BLK PNK GRN RED BLK PNK RED BLK VIO LT BLU PNK WHT GRY WHT RED BLU WHT BLK RED RED BLK RED WHT BLK/RED BLK/WHT BLK WHT/BLK WHT WHT WHT GRN GRN GRN BLK/BLU BLK/BLU FUSIBLE LINK BLOCK ASSEMBLY DC/DC FUSE ABS MTR 2 FUSE ABS- MAIN FUSE FOG FR FUSE WIPER FUSE ENG W/PMP FUSE EPS FUSE FAN 2 FUSE HTR FUSE BATT- MAIN FUSE FAN 1 FUSE J/B-AM FUSE IG1 4 RELAY S/HTR MAIN FUSE S/HTR F/L FUSE S/HTR F/R FUSE DEF FUSE P/OUTLET 2 FUSE FUEL OPN FUSE IG2 1 RELAY H-LP SHADE FUSE DCM/ MAYDAY FUSE ABS MTR 1 FUSE P CON MTR FUSE HORN FUSE ETCS FUSE BATT-S FUSE ABS 3 FUSE ABS 2 FUSE (LEFT SIDE OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) (ON BATTERY POSITIVE (+) TERMINAL) (LEFT END OF DASH) (LEFT SIDE OF DASH) (LEFT SIDE OF ENGINE COMPT) (LEFT FRONT OF ENGINE COMPT) FA AB ENGINE CONTROLS SYSTEM ELECTRONIC POWER STEERING SYSTEM HEADLIGHTS SYSTEM AIR CONDITIONING SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 2 OF 5) AIR CONDITIONING & COOLING FANS SYSTEMS ANTI-LOCK BRAKES SYSTEM ENGINE CONTROLS SYSTEM TO ENGINE ROOM J/B 1 (DIAGRAM 4 OF 5) DEFOGGER SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM FROM J/C 6 (F76) (DIAGRAM 3 OF 5) SEATS SYSTEM TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 5 OF 5) TO AMP FUSE (DIAGRAM 2 OF 5) TO ENGINE ROOM R/B 1 (DIAGRAM 2 OF 5) HORNS SYSTEM NAVIGATION SYSTEM HEADLIGHTS SYSTEM ENGINE CONTROLS SYSTEM ANTI-LOCK BRAKES SYSTEM FROM ENGINE ROOM R/B 1 (DIAGRAM 2 OF 5) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5)
A R M 15A 10A L J F 7.5A 7.5A 7.5A 20A 20A 20A 30A 30A 30A C 7.5A 7.5A 10A 7.5A 5A 20A 25A 20A 40A 25A 50A 30A 10A 10A B 10A ENGINE ROOM R/B 1 IGCT RELAY INSTRUMENT PANEL J/B ASSEMBLY ALL DR LOCK RELAY L/D-DR UNLOCK RELAY D-DR UNLOCK RELAY J/C 11 (F84) J/C 9 (F81) J/C 16 (M76) DOOR BACK RELAY DOME CUT RELAY A12 A44 D25 D7 D6 H15 A54 D24 H1 H11 H2 A13 H7 H3 K1 F3 A9 F21 9 10 8 H32 15 17 12 14 A22 F22 8 9 7 A23 H31 L1 3 WHT GRY BLU ORG BLU GRY GRY VIO PNK BLU PNK PNK BLU GRN BLU BLK/RED BLK GRN ORG BLK BLK BLK GRY VIO WHT GRN GRY BLK PNK RED WHT WHT BLK BLK GRN RED BLU BLK BLK BLK EFI- MAIN FUSE IG2- MAIN FUSE ABS MTR 3 FUSE H-LP LH FUSE J/B-B FUSE IGCT-IG FUSE AMP FUSE D/C CUT FUSE H-LP RH FUSE ECU- IG2 1 FUSE INJ FUSE D/L FUSE ECU-B 1 FUSE STOP FUSE ECU-B 2 FUSE HAZ FUSE AM2 FUSE DOOR BACK FUSE DOME FUSE P/SEAT FUSE OBD FUSE DOOR FUSE POWER FUSE DOOR R/L FUSE DOOR R/R FUSE S/ROOF FUSE (LEFT SIDE OF ENGINE COMPT) (LEFT END OF DASH) (UPPER LEFT CENTER OF DASH) (UPPER RIGHT CENTER OF DASH) (LEFT SIDE OF LUGGAGE COMPT) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) FROM HORN FUSE (DIAGRAM 1 OF 5) ANTI-LOCK BRAKES SYSTEM SOUND SYSTEMS ENGINE CONTROLS SYSTEM ENGINE CONTROLS SYSTEM HEADLIGHTS SYSTEM FROM ENGINE ROOM J/B 1 (DIAGRAM 1 OF 5) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 5 OF 5) TO ENGINE ROOM J/B 1 (DIAGRAM 1 OF 5) TO IG2 2 RELAY (DIAGRAM 3 OF 5) TO CERTIFICATION ECU (DIAGRAM 4 OF 5) ENGINE CONTROLS SYSTEM AIR CONDITIONING SYSTEM EXTERIOR LIGHTS SYSTEM INSTRUMENT CLUSTER SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING SYSTEM POWER WINDOWS SYSTEM TRANSMISSIONS SYSTEM ANTI-THEFT SYSTEM WARNING SYSTEMS ENGINE CONTROLS SYSTEM TO IG1 1 RELAY (DIAGRAM 3 OF 5) POWER TOPS SYSTEM COMPUTER DATA LINES SYSTEM SEATS SYSTEM INTERIOR LIGHTS SYSTEM POWER WINDOWS SYSTEM POWER WINDOWS SYSTEM FROM FUSIBLE LINK BLOCK ASSEMBLY (DIAGRAM 1 OF 5)
K N GND1 H G F D IG 7.5A 5A 10A C 10A 5A 5A 7.5A 5A INSTRUMENT PANEL J/B ASSEMBLY BKUP LP RELAY MAIN BODY ECU J/C 1 (A52) J/C 6 (F76) J/C 9 (F81) J/C 11 (F84) J/C 18 (O16) 11 F11 H27 A35 6 3 3 17 2 4 5 1 6 FO1 12 20 19 22 21 13 5 2 14 12 7 10 9 1 H35 D20 19 18 20 21 F15 32 9 6 1 5 A56 F10 D19 D30 F17 A55 H36 A47 D32 D3 BLK PNK RED LT BLU LT BLU BLU LT GRN VIO BLK PNK LT GRN LT GRN LT GRN LT GRN PNK VIO BLU LT GRN LT BLU LT GRN LT BLU LT GRN GRN ORG GRN WHT VIO VIO VIO LT GRN LT GRN VIO WHT/BLK BLK ORG BLK BLU BLK BLK GRN WHT/BLK IG1 2 RELAY IG1 1 RELAY IG2 2 RELAY BKUP LP FUSE ECU-IG1 4 FUSE ECU-IG1 3 FUSE ECU-IG1 2 FUSE EPS-IG1 FUSE ECU- IG2 3 FUSE METER- IG2 FUSE A/BAG-IG2 FUSE (LEFT END OF DASH) (LEFT END OF DASH) (LEFT END OF DASH) (LEFT SIDE OF DASH) (UPPER LEFT CENTER OF DASH) (UPPER RIGHT CENTER OF DASH) (CENTER FRONT OF ROOF) (NOT USED) (NOT USED) (NOT USED) (NOT USED) FA FROM AM2 FUSE (DIAGRAM 2 OF 5) TO TAIL RELAY (DIAGRAM 4 OF 5) FROM DOOR BACK FUSE (DIAGRAM 2 OF 5) FROM ACC RELAY (DIAGRAM 4 OF 5) FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 4 OF 5) TO WIPER RR FUSE (DIAGRAM 4 OF 5) SUPPLEMENTAL RESTRAINTS SYSTEM WARNING & NAVIGATION SYSTEMS INSTRUMENT CLUSTER SYSTEM EXTERIOR LIGHTS SYSTEM ELECTRONIC POWER STEERING SYSTEM ANTI-LOCK BRAKES SYSTEM TO R/B ASSEMBLY 4 (DIAGRAM 1 OF 5) CRUISE CONTROL SYSTEM DEFOGGER SYSTEM MIRRORS SYSTEM NAVIGATION SYSTEM AIR CONDITIONING SYSTEM INSTRUMENT CLUSTER SYSTEM NAVIGATION SYSTEM AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM NAVIGATION SYSTEM NAVIGATION & SUPPLEMENTAL RESTRAINTS SYSTEMS ANTI-LOCK BRAKES SYSTEM NAVIGATION SYSTEM INSTRUMENT CLUSTER SYSTEM POWER TOPS SYSTEM COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM AIR CONDITIONING & WIPER/WASHER SYSTEMS
K V U CUTB T S WCSW SS2 SS1 AGND SS1 SS2 AGND SWIL VC5 CODE TXCT Q E ACC ACCD ACC SSW1 SSW2 AGND SWIL VC5 CODE TXCT N E +B J IG1D 15A 5A H 15A 15A TRLY G 5A 10A INSTRUMENT PANEL J/B ASSEMBLY MAIN BODY ECU J/C 4 (F74) ENGINE ROOM J/B 1 CERTIFICATION ECU GROUND J/C 1 (A56) F12 5 A4 A2 A1 A3 F1 15 M59 7 5 1 6 9 10 8 7 1 2 16 A30 30 23 21 11 10 7 6 5 4 F1 17 H26 3 10 6 2 4 5 1 A14 A40 F2 A11 H12 H22 F32 H30 14 A17 F13 A53 D11 GRN WHT/BLK GRN GRN WHT/BLK RED WHT BLU ORG GRN WHT PNK BLK BLU VIO RED WHT/BLK RED RED ORG GRN WHT PNK BLK BLU VIO GRY BLU RED LT BLU GRY PNK GRY BLU GRY RED LT GRN BLU WHT LT BLU GRN RED GRN BLU VIO GRN ORG TAIL RELAY ACC RELAY P/OUTLET 1 FUSE ECU-ACC FUSE TAIL FUSE WASHER FUSE PANEL FUSE WIPER RR FUSE POWER OUTLET SOCKET ASSEMBLY 1 IG1 3 RELAY ANTENNA COIL POWER SWITCH (LEFT END OF DASH) (LOWER LEFT END OF DASH) (RIGHT END OF DASH) (LEFT SIDE OF ENGINE COMPT) (RIGHT END OF DASH) (LEFT FRONT OF ENGINE COMPT) FD AB TO IG1 1 RELAY (DIAGRAM 3 OF 5) FROM IG1 2 RELAY (DIAGRAM 3 OF 5) FROM IG1 2 RELAY (DIAGRAM 3 OF 5) TO IG1 2 RELAY (DIAGRAM 3 OF 5) HEADLIGHTS SYSTEM TO ENGINE ROOM J/B 1 (DIAGRAM 1 OF 5) MIRRORS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM NAVIGATION & SOUND SYSTEMS FROM INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 2 OF 5) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 5 OF 5) TO MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (DIAGRAM 5 OF 5) FROM J/C 8 (F79) (DIAGRAM 5 OF 5) FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) FROM MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (DIAGRAM 5 OF 5) WIPER/WASHER SYSTEM
ILL+ ILL- U BECU T S DIS +B ACC PGND 5A R 15A 10A Q E ACC P INSTRUMENT PANEL J/B ASSEMBLY MAIN BODY ECU J/C 8 (F79) F24 H29 16 22 21 31 MF2 46 9 6 3 11 8 5 2 19 18 17 A10 A32 D22 F1 12 10 7 4 1 A21 A18 1 2 A2 F5 PNK BRN GRN WHT LT BLU WHT BLU WHT/BLK VIO VIO LT BLU LT BLU LT BLU WHT LT BLU GRY BLU WHT/BLK GRY WHT/BLK WHT/BLK LT GRN WHT/BLK LT GRN BLK ECU- DCC 2 FUSE ECU- DCC 1 FUSE RADIO FUSE P/OUTLET RELAY 2 POWER OUTLET SOCKET ASSEMBLY 2 MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (LEFT END OF DASH) (UPPER LEFT CENTER OF DASH) (RIGHT END OF DASH) (LEFT SIDE OF DASH) (LOWER LEFT CENTER OF DASH) (NOT USED) (NOT USED) FD FA FB FROM ENGINE ROOM R/B 1 (DIAGRAM 2 OF 5) ANTI-LOCK BRAKES SYSTEM NAVIGATION & SOUND SYSTEMS FROM ENGINE ROOM R/B 1 (DIAGRAM 1 OF 5) FROM J/C 4 (F74) (DIAGRAM 4 OF 5) MIRRORS SYSTEM INSTRUMENT CLUSTER SYSTEM TO CERTIFICATION ECU (DIAGRAM 4 OF 5) TO CERTIFICATION ECU (DIAGRAM 4 OF 5) FROM J/C 4 (F74) (DIAGRAM 4 OF 5) INTERIOR LIGHTS SYSTEM