2017 Toyota Tacoma Fuse Box Diagram & Amperage

Quick answer

The 2017 Toyota Tacoma has two primary fuse box locations: one in the engine compartment (under-hood) and another inside the cabin (driver's side kick panel).

Engine Compartment Fuse Box (Under-Hood)

This fuse box contains fuses for critical engine components, headlights, and other high-current accessories. It's located on the driver's side, near the battery. Always refer to the legend on the fuse box lid for the most accurate information for your specific trim level.

Relays in Engine Compartment Fuse Box:

• EFI Relay: Controls power to the EFI system, including the fuel pump. (Often found near the EFI fuse)
• HORN Relay: Controls the horn.
• HEADLIGHT Relays (LO/HI): Control power to the low and high beam headlights.
• BLOWER Relay: Controls the HVAC blower motor.
• A/C MAG Relay: Controls the A/C compressor clutch.
• STARTER Relay: Controls the starter motor.

Cabin Fuse Box (Driver's Side Kick Panel)

This fuse box is located behind a removable panel on the driver's side, near the kick panel. It houses fuses for various interior accessories, safety systems, and creature comforts. Always verify with your vehicle's fuse box legend.

How to Test a Fuse

Testing a fuse is a straightforward process:

1. Safety First: Ensure the vehicle is off and the key is removed from the ignition before working with fuses.
2. Locate the Fuse: Remove the fuse box cover and identify the suspected fuse using the legend.
3. Inspect Visually: Most fuses have a small wire link inside. If this wire is broken or melted, the fuse is blown. For opaque fuses, a visual check is not enough.
4. Use a Multimeter or Test Light:
   • Multimeter: Set your multimeter to the continuity setting. Touch the probes to the metal contact points on top of the fuse. A good fuse will show continuity (a beep or a reading close to zero ohms). A blown fuse will show no continuity or an "OL" (open loop) reading.
   • Test Light: With the ignition on (if the circuit is active), touch the test light probe to each exposed metal contact point on the top of the fuse. If the test light illuminates on both sides, the fuse is good. If it only illuminates on one side or not at all, the fuse is blown.
5. Replace (If Blown): Always replace a blown fuse with a new fuse of the exact same amperage rating and type. Using a fuse with a higher amperage can cause severe electrical damage or even a fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more commonly encountered on the 2017 Toyota Tacoma due to accessory usage or component wear:

• CIG/POWER OUTLET Fuses: These often blow out from overdrawing current with accessories like phone chargers, air compressors, or power inverters. If your power outlets aren't working, check the CIG (cabin) and POWER OUTLET (engine compartment) fuses first.
• RADIO Fuses: Issues with the infotainment system, particularly after adding aftermarket accessories or due to a short circuit, can often lead to a blown RADIO fuse.
• HEADLIGHT Fuses: While less common on modern vehicles, a short in the headlight circuit or a failing bulb can sometimes blow a headlight fuse. If one or both headlights are out, but the bulbs appear good, check these fuses.
• TRAILER BRAKE/TOWING Fuses (if equipped): If you experience issues with trailer lights or trailer brakes, these dedicated towing fuses are the first place to look. Overloads from faulty trailer wiring are a common cause.

Always check the easiest fix first! If a function isn't working, start by checking the relevant fuse. If the fuse is good, then you'll need to investigate further into the component or wiring.

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