If you are looking for the Fuse Box Diagrams Toyota Tacoma (2012-2015), this guide will help you find the main fuse and relay locations quickly. Fuse boxes protect the electrical system from overloads, while relays act as switches for larger circuits like lights, fans, and power accessories.
Knowing the correct fuse box location matters when you are troubleshooting problems such as a blown fuse, non-working headlights, a dead power outlet, or another electrical fault. In many cases, the solution is simple once you know where the fuse boxes are and how to read the relay diagram.
How to Identify the Correct Fuse or Relay
The easiest way to identify each fuse or relay is by using the diagram printed on the fuse box cover or the owner’s manual. The diagram shows the circuit name, fuse number, and amperage rating.
For the Toyota Tacoma (2012-2015) fuse box diagrams, always match the slot number and circuit description before removing anything. Never replace a fuse with one of a higher amperage rating, because that can damage the electrical system or create a safety risk.
If the replacement fuse blows again soon after installation, there may be a deeper electrical problem that needs diagnosis. In that case, checking the wiring or related components may be necessary.
A small fuse puller is often stored inside one of the fuse boxes. If not, use a proper plastic tool or needle-nose pliers carefully. Avoid metal tools if possible, since they can short the circuit.
MUST READ: DYI – How to Check Car Fuses?
(2012-2015) Toyota Tacoma fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Toyota Tacoma (2012-2015) fuse assignment
Toyota Tacoma Year of production: 2012, 2013, 2014, 2015
Checking and Replacing Fuses in Toyota Tacoma
The fuses are designed to blow, protecting the wiring harness from damage. If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. Replace the blown fuse with a new fuse of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
Location of Fuse Boxes
Engine Compartment Fuse Box
The main fuse and relay box on the Toyota Tacoma (2012-2015) is located in the engine compartment, usually near the battery on the driver’s side. It is housed inside a black plastic cover and contains many of the vehicle’s larger fuses and relays.
To access it, open the hood and locate the rectangular fuse box cover. Release the clips or tabs and lift the cover off carefully. Inside, you will find the fuse layout and relay positions for important systems in the truck. This is usually the first place to check if a major electrical component is not working.
Before opening the box, make sure the ignition is off and the key is removed. If you are handling higher-amperage fuses or checking relays closely, disconnect the negative battery terminal for extra safety.
Interior Fuse Box
The second main fuse box is inside the cabin. On the Toyota Tacoma (2012-2015), it is typically located under the driver’s side dashboard, near the steering wheel and lower dash panel. In some trucks, you may need to remove a small cover or trim panel to reach it.
To access the interior fuse box, open the driver’s door and look under the dash area on the left side. Gently remove the cover or lower panel if it is fitted. This fuse box protects smaller circuits such as the radio, instrument cluster, power windows, interior lights, and other comfort features.
Always switch off the ignition before checking any fuse in the cabin. Use a flashlight if needed so you can see the fuse positions more clearly.
Relay Locations
Most relays on the Tacoma are located in the engine compartment fuse box. Some circuits may also be controlled through the interior fuse block, but there is usually no separate large relay box outside these two main areas.
If you are using a relay diagram, compare the relay slots carefully with the labels on the fuse box cover or the diagram provided in the owner’s manual. This will help you identify which relay controls each system, such as the fuel pump, cooling fan, headlights, or other electrical components.
If a circuit is not working and the fuse is still good, the relay may be the next part to inspect. Some relays can be swapped with another identical relay for testing, but only if the diagram shows they are the same type and rating.
2012
Engine Compartment Fuse Box
List of fuses in the engine compartment (2012)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | A/C | 10A | Air conditioning system |
| 2 | TOWING TAIL | 30A | Trailer lights (tail lights) |
| 3 | FR FOG | 15A | Front fog lights |
| 4 | STOP | 10A | Stop lights, high mounted stoplight, vehicle stability control system, anti-lock brake system, shift lock system, multiport fuel injection system / sequential multiport fuel injection system, towing lights |
| 5 | TOWING BRK | 30A | Trailer brake controller |
| 6 | EFI NO.2 | 10A | Multiport fuel injection system / sequential multiport fuel injection system |
| 7 | OBD | 7.5A | On-board diagnosis system |
| 8 | BATT CHG | 30A | Trailer sub battery |
| 9 | Al VALVE | 10A | Al system |
| 10 | TOWING | 30A | Towing lights |
| 11 | TRN-HAZ | 15A | Turn signal lights, emergency flashers, meter and gauge |
| 12 | RADIO NO.2 | 30A | Audio system |
| 13 | HEAD (LO RH) | 10A | Right-hand headlight (low beam), front fog lights |
| 14 | HEAD (LO LH) | 10A | Left-hand headlight (low beam) |
| 15 | HEAD (HI RH) | 10A | Right-hand headlight (high beam) |
| 16 | HEAD (HI LH) | 10A | Left-hand headlight (high beam), meter and gauge |
| 17 | ETCS | 10A | Multiport fuel injection system / sequential multiport fuel injection system, electronic throttle control system |
| 18 | ALT-S | 7.5A | Charging system |
| 19 | EFI | 20A | Multiport fuel injection system / sequential multiport fuel injection system |
| 20 | HORN | 10A | Horn |
| 21 | A/F HEATER | 15A | Multiport fuel injection system / sequential multiport fuel injection system |
| 22 | ECU-B | 7.5A | Wireless remote control system, air conditioning system, multiplex communication system, meter and gauge, front passenger occupant classification system, garage door opener |
| 23 | DOME | 7.5A | Interior light, personal lights, clock, vanity lights |
| 24 | RADIO NO.1 | 10A | Audio system |
| 25 | STA | 7.5A | Starting system, multiport fuel injection system / sequential multiport fuel injection system, meter and gauge, clutch start cancel switch |
| 26 | Spare | 10A | Spare fuse |
| 27 | Spare | 15A | Spare fuse |
| 28 | J/B | 50A | TAIL, AC SKT, DR LCK, D FR P/W, D RR P/W, P FR P/W and P RR P/W fuses |
| 29 | AM1 | 50A | ACC, IG1, IG1 NO.2, WIP, WSH, 4WD, BKUP LP and STA fuses |
| 30 | HEATER | 50A | A/C fuse, air conditioning system |
| 31 | ABS NO.1 | 50A | Anti-lock brake system, vehicle stability control system |
| 32 | AM2 | 30A | IGN and GAUGE fuses, multiport fuel injection system / sequential multiport fuel injection system |
| 33 | A/PUMP | 50A | Multiport fuel injection system / sequential multiport fuel injection system |
| 34 | ABS NO.2 | 30A | Anti-lock brake system, vehicle stability control system |
| 35 | AC SKT | 100A | Power outlets |
| 36 | ALT | 120A/140A* | AM1, AC SKT, HEATER, FR FOG, STOP, OBD, J/B, TOWING TAIL, TOWING BRK and BATT CHG fuses |
| * Replace the fuse with one of the same ampere rating as the original | |||
Instrument Panel Fuse Box
List of fuses in the instrument panel (2012)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | IGN | 15A | Multiport fuel injection system / sequential multiport fuel injection system, anti-lock brake system, traction control system, vehicle stability control system, SRS airbag system, front passenger occupant classification system |
| 2 | GAUGE | 7.5A | Meter and gauge, emergency flashers |
| 3 | TAIL | 10A | Tail lights, license plate lights, parking lights, multiport fuel injection system / sequential multiport fuel injection system, instrument panel light control, illuminations |
| 4 | ACC | 7.5A | Shift lock system, outside rear view mirrors, audio system, power outlets |
| 5 | PWR OUTLET | 15A | Power outlets |
| 6 | DR LCK | 20A | Door lock system |
| 7 | IG1 NO.2 | 10A | Anti-lock brake system, vehicle stability control system, stop lights, charging system, multiport fuel injection system / sequential multiport fuel injection system, air conditioning system, instrument panel light control, anti-glare inside rear view mirror, back monitor, clutch start cancel switch, rear differential lock system, power outlets, tire pressure warning system |
| 8 | BKUP LP | 10A | Trailer lights (back-up lights) |
| 9 | IG1 | 10A | Back-up lights, air conditioning system, shift lock system, audio system |
| 10 | P RR P/W | 20A | Rear passenger’s power window (right side) |
| 11 | P FR P/W | 20A | Front passenger’s power window |
| 12 | WSH | 10A | Wipers and washer |
| 13 | D RR P/W | 20A | Rear passenger’s power window (left side) |
| 14 | 4WD | 20A | Four-wheel drive system, rear differential lock system |
| 15 | WIP | 30A | Wipers and washer |
| 16 | D FR P/W | 30A | Power windows |
2013-2014
Engine Compartment Fuse Box
List of fuses in the engine compartment (2013-2014)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | A/C | 10A | Air conditioning system |
| 2 | TOWING TAIL | 30A | Trailer lights (tail lights) |
| 3 | FOG FR | 15A | Front fog lights |
| 4 | STOP | 10A | Stop lights, high mounted stoplight, vehicle stability control system, anti-lock brake system, shift lock system, multiport fuel injection system / sequential multiport fuel injection system, towing lights |
| 5 | TOWING BRK | 30A | Trailer brake controller |
| 6 | EFI | 10A | Multiport fuel injection system / sequential multiport fuel injection system |
| 7 | S/HTR NO.2 | 30A | Seat heaters |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | BATT CHG | 30A | Trailer sub battery |
| 10 | AIR PMP HTR | 10A | Al system |
| 11 | TOWING | 30A | Towing lights |
| 12 | TURN & HAZ | 15A | Turn signal lights, emergency flashers, meter and gauge |
| 13 | RADIO NO.2 | 30A | Audio system |
| 14 | H-LP RH-LO | 10A | Right-hand headlight (low beam), front fog lights |
| 15 | H-LP LH-LO | 10A | Left-hand headlight (low beam) |
| 16 | H-LP RH-HI | 10A | Right-hand headlight (high beam) |
| 17 | H-LP LH-HI | 10A | Left-hand headlight (high beam), meter and gauge |
| 18 | ETCS | 10A | Multiport fuel injection system / sequential multiport fuel injection system, electronic throttle control system |
| 19 | ALT-S | 7.5A | Charging system |
| 20 | EFI-MAIN | 20A | Multiport fuel injection system / sequential multiport fuel injection system |
| 21 | HORN | 10A | Horn |
| 22 | A/F HTR | 15A | Multiport fuel injection system / sequential multiport fuel injection system |
| 23 | ECU-B | 7.5A | Wireless remote control system, air conditioning system, multiplex communication system, meter and gauge, front passenger occupant classification system, garage door opener |
| 24 | DOME | 7.5A | Interior light, personal lights, clock, vanity lights |
| 25 | RADIO NO.1 | 20A | Audio system |
| 26 | STA | 7.5A | Starting system, multiport fuel injection system / sequential multiport fuel injection system, meter and gauge, clutch start cancel switch |
| 27 | Spare | 10A | Spare fuse |
| 28 | Spare | 15A | Spare fuse |
| 29 | S/HTR NO.1 | 50A | Seat heaters |
| 30 | J/B | 50A | TAIL, AC SKT, DR LCK, D FR P/W, D RR P/W, P FR P/W and P RR P/W fuses |
| 31 | AM1 | 50A | ACC, IG1, IG1 NO.2, WIP, WSH, 4WD, BKUP LP and STA fuses |
| 32 | HTR | 50A | A/C fuse, air conditioning system |
| 33 | ABS NO.1 | 50A | Anti-lock brake system, vehicle stability control system |
| 34 | AM2 | 30A | IGN and GAUGE fuses, multiport fuel injection system / sequential multiport fuel injection system |
| 35 | AIR PMP | 50A | Multiport fuel injection system / sequential multiport fuel injection system |
| 36 | ABS NO.2 | 30A | Anti-lock brake system, vehicle stability control system |
| 37 | INV | 100A | Power outlets |
| 38 | ALT | 120A/140A* | AM1, AC SKT, HEATER, FR FOG, STOP, OBD, J/B, TOWING TAIL, TOWING BRK and BATT CHG fuses |
| * Replace the fuse with one of the same ampere rating as the original | |||
Instrument Panel Fuse Box
List of fuses in the instrument panel (2013-2014)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | IGN | 15A | Multiport fuel injection system / sequential multiport fuel injection system, anti-lock brake system, traction control system, vehicle stability control system, SRS airbag system, front passenger occupant classification system |
| 2 | GAUGE | 7.5A | Meter and gauge, emergency flashers |
| 3 | TAIL | 10A | Tail lights, license plate lights, parking lights, multiport fuel injection system / sequential multiport fuel injection system, instrument panel light control, illuminations |
| 4 | ACC | 7.5A | Shift lock system, outside rear view mirrors, audio system, power outlets |
| 5 | PWR OUTLET | 15A | Power outlets |
| 6 | DR LCK | 20A | Door lock system |
| 7 | IG1 NO.2 | 10A | Anti-lock brake system, vehicle stability control system, stop lights, charging system, multiport fuel injection system / sequential multiport fuel injection system, air conditioning system, instrument panel light control, anti-glare inside rear view mirror, back monitor, clutch start cancel switch, rear differential lock system, power outlets, tire pressure warning system |
| 8 | BKUP LP | 10A | Trailer lights (back-up lights) |
| 9 | IG1 | 10A | Anti-lock brake system, traction control system, vehicle stability control system, back-up lights, air conditioning system, shift lock system, audio system |
| 10 | P RR P/W | 20A | Rear passenger’s power window (right side) |
| 11 | P FR P/W | 20A | Front passenger’s power window |
| 12 | WSH | 10A | Wipers and washer |
| 13 | D RR P/W | 20A | Rear passenger’s power window (left side) |
| 14 | 4WD | 20A | Four-wheel drive system, rear differential lock system |
| 15 | WIP | 30A | Wipers and washer |
| 16 | D FR P/W | 30A | Power windows |
2015
Engine Compartment Fuse Box
List of fuses in the engine compartment (2015)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | A/C | 10A | Air conditioning system |
| 2 | TOWING TAIL | 30A | Trailer lights (tail lights) |
| 3 | FOG FR | 15A | Front fog lights |
| 4 | STOP | 10A | Stop lights, high mounted stoplight, vehicle stability control system, anti-lock brake system, shift lock system, multiport fuel injection system / sequential multiport fuel injection system, towing lights |
| 5 | TOWING BRK | 30A | Trailer brake controller |
| 6 | EFI | 10A | Multiport fuel injection system / sequential multiport fuel injection system |
| 7 | S/HTR NO.2 | 30A | Seat heaters |
| 8 | OBD | 7.5A | On-board diagnosis system |
| 9 | BATT CHG | 30A | Trailer sub battery |
| 10 | AIR PMP HTR | 10A | Al system |
| 11 | TOWING | 30A | Towing lights |
| 12 | TURN & HAZ | 15A | Turn signal lights, emergency flashers, meter and gauge |
| 13 | RADIO NO.2 | 30A | Audio system |
| 14 | H-LP RH-LO | 10A | Right-hand headlight (low beam), front fog lights |
| 15 | H-LP LH-LO | 10A | Left-hand headlight (low beam) |
| 16 | H-LP RH-HI | 10A | Right-hand headlight (high beam) |
| 17 | H-LP LH-HI | 10A | Left-hand headlight (high beam), meter and gauge |
| 18 | ETCS | 10A | Multiport fuel injection system / sequential multiport fuel injection system, electronic throttle control system |
| 19 | ALT-S | 7.5A | Charging system |
| 20 | EFI-MAIN | 20A | Multiport fuel injection system / sequential multiport fuel injection system |
| 21 | HORN | 10A | Horn |
| 22 | A/F HTR | 15A | Multiport fuel injection system / sequential multiport fuel injection system |
| 23 | ECU-B | 7.5A | Wireless remote control system, air conditioning system, multiplex communication system, meter and gauge, front passenger occupant classification system, garage door opener |
| 24 | DOME | 7.5A | Interior light, personal lights, vanity lights |
| 25 | RADIO NO.1 | 20A | Audio system |
| 26 | STA | 7.5A | Starting system, multiport fuel injection system / sequential multiport fuel injection system, meter and gauge, clutch start cancel switch |
| 27 | Spare | 10A | Spare fuse |
| 28 | Spare | 15A | Spare fuse |
| 29 | S/HTR NO.1 | 50A | Seat heaters |
| 30 | J/B | 50A | TAIL, AC SKT, DR LCK, D FR P/W, D RR P/W, P FR P/W and P RR P/W fuses |
| 31 | AM1 | 50A | ACC, IG1, IG1 NO.2, WIP, WSH, 4WD, BKUP LP and STA fuses |
| 32 | HTR | 50A | A/C fuse, air conditioning system |
| 33 | ABS NO.1 | 50A | Anti-lock brake system, vehicle stability control system |
| 34 | AM2 | 30A | IGN and GAUGE fuses, multiport fuel injection system / sequential multiport fuel injection system |
| 35 | AIR PMP | 50A | Multiport fuel injection system / sequential multiport fuel injection system |
| 36 | ABS NO.2 | 30A | Anti-lock brake system, vehicle stability control system |
| 37 | INV | 100A | Power outlets |
| 38 | ALT | 120A/140A* | AM1, AC SKT, HEATER, FR FOG, STOP, OBD, J/B, TOWING TAIL, TOWING BRK and BATT CHG fuses |
| * Replace the fuse with one of the same ampere rating as the original | |||
Instrument Panel Fuse Box
List of fuses in the instrument panel (2015)
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | IGN | 15A | Multiport fuel injection system / sequential multiport fuel injection system, anti-lock brake system, traction control system, vehicle stability control system, SRS airbag system, front passenger occupant classification system |
| 2 | GAUGE | 7.5A | Meter and gauge, emergency flashers |
| 3 | TAIL | 10A | Tail lights, license plate lights, parking lights, multiport fuel injection system / sequential multiport fuel injection system, instrument panel light control, illuminations |
| 4 | ACC | 7.5A | Shift lock system, outside rear view mirrors, audio system, power outlets |
| 5 | PWR OUTLET | 15A | Power outlets |
| 6 | DR LCK | 20A | Door lock system |
| 7 | IG1 NO.2 | 10A | Anti-lock brake system, vehicle stability control system, stop lights, charging system, multiport fuel injection system / sequential multiport fuel injection system, air conditioning system, instrument panel light control, anti-glare inside rear view mirror, back monitor, clutch start cancel switch, rear differential lock system, power outlets, tire pressure warning system |
| 8 | BKUP LP | 10A | Trailer lights (back-up lights) |
| 9 | IG1 | 10A | Anti-lock brake system, traction control system, vehicle stability control system, back-up lights, air conditioning system, shift lock system, audio system |
| 10 | P RR P/W | 20A | Rear passenger’s power window (right side) |
| 11 | P FR P/W | 20A | Front passenger’s power window |
| 12 | WSH | 10A | Wipers and washer |
| 13 | D RR P/W | 20A | Rear passenger’s power window (left side) |
| 14 | 4WD | 20A | Four-wheel drive system, rear differential lock system |
| 15 | WIP | 30A | Wipers and washer |
| 16 | D FR P/W | 30A | Power windows |
Conclusion
Understanding the Toyota Tacoma (2012-2015) fuse box locations makes basic troubleshooting much easier. Whether you are dealing with a blown fuse, a dead accessory, or a non-working light, knowing where the fuse boxes and relays are located saves time and effort.
Use the fuse chart and relay diagram carefully, replace fuses only with the correct rating, and inspect further if the same fuse keeps failing. If you are unsure which fuse or relay to check, it is best to consult a qualified mechanic or auto electrician.
