Toyota Yaris iA (2018) – fuse box diagram
Year of production: 2017
Engine compartment
| Description | A | Protected component | |
| 1 | C/U IG1 | 15 | For protection of various circuits |
| 2 | ENGINE IG1 | 7,5 | Engine control system |
| 3 | SUNROOF | 10 | — |
| 4 | INTERIOR | 15 | Overhead light |
| 5 | ENG+B | 7,5 | Engine control system |
| 6 | AUDIO2 | 15 | Audio system |
| 7 | METER1 | 10 | Combination meter |
| 8 | SRS1 | 7,5 | Air bag |
| 9 | METER2 | 7,5 | — |
| 10 | RADIO | 7,5 | Audio system |
| 11 | ENGINE3 | 15 | Engine control system |
| 12 | ENGINE1 | 15 | Engine control system |
| 13 | ENGINE2 | 15 | Engine control system |
| 14 | AUDIO1 | 25 | Audio system |
| 15 | A/C MAG | 7,5 | Air conditioner |
| 16 | AT PUMP | 15 | — |
| 17 | AT | 15 | Transaxle control system (if equipped) |
| 18 | D.LOCK | 25 | Power door locks |
| 19 | H/L RH | 20 | Headlight (RH) |
| 20 | ENG+B2 | 7,5 | Engine control system |
| 21 | TAIL | 20 | Taillights, License plate lights, Parking lights |
| 22 | — | — | — |
| 23 | ROOM | 25 | Overhead light |
| 24 | FOG | 15 | Fog lights (if equipped) |
| 25 | H/CLEAN | 20 | — |
| 26 | STOP | 10 | Brake lights |
| 27 | HORN | 15 | Horn |
| 28 | H/L LH | 20 | Headlight (LH) |
| 29 | ABS/DSC S | 30 | ABS, Dynamic stability control system |
| 30 | HAZARD | 15 | Hazard warning flashers, Turn signal lights |
| 31 | FUEL PUMP | 15 | Fuel system |
| 32 | FUEL WARM | 25 | — |
| 33 | WIPER | 20 | Front window wiper and washer |
| 34 | CABIN+B | 50 | For protection of various circuits |
| 35 | FAN2 | 30 | Cooling fan |
| 36 | FUEL PUMP | 30 | — |
| 37 | ABS/DSC M | 50 | ABS, Dynamic stability control system |
| 38 | EVVT | 20 | — |
| 39 | — | — | — |
| 40 | FAN1 | 30 | Cooling fan |
| 41 | FAN3 | 40 | — |
| 42 | ENG.MAIN | 40 | Engine control system |
| 43 | EPS | 60 | — |
| 44 | DEFOG | 40 | Rear window defogger |
| 45 | IG2 | 30 | For protection of various circuits |
| 46 | INJECTOR | 30 | Engine control system |
| 47 | HEATER | 40 | Air conditioner |
| 48 | P.WINDOW1 | 30 | Power windows |
| 49 | DCDC DE | 40 | — |
Fuse block (Left side)
| Description | A | Protected component | |
| 1 | — | — | — |
| 2 | — | — | — |
| 3 | — | — | — |
| 4 | — | — | — |
| 5 | F.OUTLET | 15 | Accessory sockets |
| 6 | — | — | — |
| 7 | AT IND | 7,5 | AT shift indicator (if equipped) |
| 8 | MIRROR | 7,5 | Power control mirror |
| 9 | — | — | — |
| 10 | P.WINDOW2 | 25 | Power windows |
| 11 | R.WIPER | 15 | — |
| 12 | — | — | — |
| 13 | — | — | — |
| 14 | SRS2/ESCL | 15 | — |
| 15 | SEAT WARM | 20 | Seat warmer (if equipped) |
| 16 | M.DEF | 7,5 | Mirror defogger (if equipped) |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.