2012 Toyota Corolla Fuse Box Diagram
The 2 fuse boxes on the 2012 Toyota Corolla, with every fuse and relay. Tap a fuse to see what it protects, or search for the thing that stopped working.
Where it isUnder the hood in the engine bay. Page 393 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 393 of your owner's manual.
Where it isInside the car, under or behind the dashboard, driver's side. Page 396 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 396 of your owner's manual.
2012 Corolla engine bay fuses
Engine compartment. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 30A | Fuse (size not listed) | H-LP CLN |
| 2 | 40A | Fuse (size not listed) | RDI FAN: Electric cooling fan(s) |
| 3 | 30A | Fuse (size not listed) | ABS NO. 3: Anti-lock brake system, vehicle stability control system |
| 4 | 50A | Fuse (size not listed) | ABS NO. 1: Anti-lock brake system, vehicle stability control system |
| 5 | 50A | Fuse (size not listed) | HTR: Air conditioning system |
| 6 | 120A | Fuse (size not listed) | ALT: Charging system, RDI FAN, ABS NO. 1, ABS NO. 3, HTR, HTR SUB NO. 1, HTR SUB NO. 3, ACC, CIG, ECU-IG NO. 2, HTR-IG, WIPER, WASHER, ECU-IG NO. 1, AM1, DOOR, STOP, FR DOOR, POWER, RR DOOR, RL DOOR, OBD, ACC-B, FR FOG, DEF, MIR HTR, TAIL, PANEL, PWR SEAT, SUNROOF |
| 7 | 60A | Fuse (size not listed) | EPS: Electric power steering |
| 8 | 80A | Fuse (size not listed) | GLOW |
| 9 | 50A | Fuse (size not listed) | P/I: EFI MAIN, HORN, IG2 |
| 10 | 50A | Fuse (size not listed) | H-LP MAIN: H-LP LH LO, H-LP RH LO, H-LP LH HI, H-LP RH HI |
| 11 | 10A | Fuse (size not listed) | EFI NO. 2: Emission control system |
| 12 | 10A | Fuse (size not listed) | EFI NO. 1: Multiport fuel injection system/ sequential multiport fuel injection system |
| 13 | 10A | Fuse (size not listed) | H-LP RH HI: Right-hand headlight (high beam) |
| 14 | 10A | Fuse (size not listed) | H-LP LH HI: Left-hand headlight (high beam) |
| 15 | 10A | Fuse (size not listed) | H-LP RH LO: Right-hand headlight (low beam) |
| 16 | 10A | Fuse (size not listed) | H-LP LH LO: Left-hand headlight (low beam) |
| 17 | 10A | Fuse (size not listed) | ETCS: Electronic throttle control system |
| 18 | 10A | Fuse (size not listed) | TURN-HAZ: Turn signal lights, emergency flashers |
| 19 | 7.5A | Fuse (size not listed) | ALT-S: Charging system |
| 20 | 7.5A | Fuse (size not listed) | AM2 NO. 2: Multiport fuel injection system/ sequential multiport fuel injection system, starting system |
| 21 | 30A | Fuse (size not listed) | AM2: Starting system |
| 22 | 20A | Fuse (size not listed) | STRG LOCK: Steering lock system |
| 23 | 7.5A | Fuse (size not listed) | IG2 NO. 2: Starting system |
| 24 | 10A | Fuse (size not listed) | ECU-B2: Air conditioning system |
| 25 | 10A | Fuse (size not listed) | ECU-B: Main body ECU, gauge and meters, clock |
| 26 | 15A | Fuse (size not listed) | RAD NO. 1: Audio system |
| 27 | 10A | Fuse (size not listed) | DOME: Trunk light, smart key system, interior light |
| 28 | 30A | Fuse (size not listed) | AMP: Audio system |
| 29 | 10A | Fuse (size not listed) | MAYDAY |
| 30 | 10A | Fuse (size not listed) | SPARE: Spare fuse |
| 31 | 30A | Fuse (size not listed) | SPARE: Spare fuse |
| 32 | 20A | Fuse (size not listed) | SPARE: Spare fuse |
| 33 | 20A | Fuse (size not listed) | EFI MAIN: Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO. 1, EFI NO. 2 |
| 34 | 10A | Fuse (size not listed) | HORN: Horn |
| 35 | 15A | Fuse (size not listed) | IG2: Multiport fuel injection system/ sequential multiport fuel injection system, starting system, IGN, METER |
| 36 | 7.5A | Fuse (size not listed) | ST |
| 37 | 30A | Fuse (size not listed) | HTR SUB NO. 1: PTC heater |
| 38 | 30A | Fuse (size not listed) | HTR SUB NO. 3: PTC heater |
2012 Corolla driver's side panel fuses
Under the driver’s side instrument panel. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 40A | Fuse (size not listed) | DEF: Rear window defogger, MIR HTR |
| 2 | 30A | Fuse (size not listed) | PWR SEAT: Power seat |
| 3 | 10A | Fuse (size not listed) | TAIL: Parking lights, tail lights, license plate lights, front side marker lights, multiport fuel injection system/ sequential multiport fuel injection system, instrument cluster lights |
| 4 | 7.5A | Fuse (size not listed) | PANEL: Switch illumination |
| 5 | 20A | Fuse (size not listed) | FR DOOR: Power windows, moon roof |
| 6 | 20A | Fuse (size not listed) | RL DOOR: Power windows |
| 7 | 20A | Fuse (size not listed) | RR DOOR: Power windows |
| 8 | 20A | Fuse (size not listed) | SUNROOF: Moon roof |
| 9 | 15A | Fuse (size not listed) | CIG: Cigarette lighter |
| 10 | 7.5A | Fuse (size not listed) | ACC: Outside rear view mirrors, audio system, main body ECU |
| 11 | 10A | Fuse (size not listed) | MIR HTR: Outside rear view mirror defogger |
| 12 | 7.5A | Fuse (size not listed) | IGN: Steering lock system, SRS airbag system, multiport fuel injection system/sequential multiport fuel injection system, front passenger occupant classification system |
| 13 | 7.5A | Fuse (size not listed) | METER: Gauge and meters |
| 14 | 30A | Fuse (size not listed) | POWER: Power windows |
| 15 | 15A | Fuse (size not listed) | SEAT HTR: Seat heater |
| 16 | 10A | Fuse (size not listed) | HTR-IG: Air conditioning system |
| 17 | 25A | Fuse (size not listed) | WIPER: Windshield wipers |
| 18 | 15A | Fuse (size not listed) | WASHER: Windshield washer |
| 19 | 10A | Fuse (size not listed) | ECU-IG NO. 1: Automatic transmission, main body ECU, electric power steering, electric cooling fan(s), shift lock control system, anti-lock brake system, tire pressure warning system, vehicle stability control system, cruise control system |
| 20 | 10A | Fuse (size not listed) | ECU-IG NO. 2: Back-up lights, charging system, rear window defogger, air conditioning system, multiport fuel injection system/sequential multiport fuel injection system, moon roof |
| 21 | 7.5A | Fuse (size not listed) | OBD: On-board diagnosis system |
| 22 | 10A | Fuse (size not listed) | STOP: Stop lights, high mounted stoplight, anti-lock brake system, main body ECU, multiport fuel injection system/sequential multiport fuel injection system, shift lock control system, vehicle stability control system |
| 23 | 25A | Fuse (size not listed) | DOOR: Power door lock system |
| 24 | 25A | Fuse (size not listed) | ACC-B: CIG, ACC |
| 25 | 15A | Fuse (size not listed) | FR FOG: Front fog lights |
| 26 | 7.5A | Fuse (size not listed) | AM1: Starting system, ACC, CIG |
Blade fuse colours
- 5A Tan
- 7.5A Brown
- 10A Red
- 15A Blue
- 20A Yellow
- 25A Clear
- 30A Green
- 35A Blue-green
- 40A Orange
Cartridge (J-case) colours
- 20A Blue
- 25A White
- 30A Pink
- 40A Green
- 50A Red
- 60A Yellow
Source: 2012 Toyota Corolla Owner's Manual, "Fuses" section, p. 393 and 396.
Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.