2016 Toyota Corolla Fuse Box Diagram & Amperage

Quick Answer

The 2016 Toyota Corolla has three main fuse box locations:

• Engine Compartment (Under-hood): Located on the driver's side, near the battery.
• Driver's Side Instrument Panel (Dash Kick-Panel): Located behind a small access panel on the driver's side, to the left of the steering wheel.
• Trunk/Cargo Area: Located on the passenger side of the trunk, behind a trim panel.

Engine Compartment Fuse Box

This fuse box, located under the hood near the battery, houses fuses for critical engine functions and high-current accessories. Always verify the printed legend on the fuse box lid for your specific trim level.

Relays: The engine compartment fuse box also contains several relays, typically for the starter, EFI, A/C compressor, and horn. Their exact locations are usually marked on the fuse box lid.

Driver's Side Instrument Panel Fuse Box

This fuse box is located inside the cabin, behind an access panel to the left of the steering wheel. It protects various interior electrical components and accessories. Always verify the printed legend on the fuse box lid for your specific trim level.

Relays: This fuse box typically houses relays for accessories like the power windows and door locks.

Trunk/Cargo Area Fuse Box

The 2016 Toyota Corolla typically has a smaller fuse box located in the trunk area, often on the passenger side behind a trim panel. This box usually handles circuits related to rear-mounted accessories, such as the fuel pump (on some models) or trailer wiring if equipped. Always verify the printed legend on the fuse box lid for your specific trim level.

Relays: Depending on the trim and options, this fuse box might house relays for the fuel pump or trailer-related functions.

How to Test a Fuse

Testing a fuse is a straightforward process:

1. Locate the fuse box: Refer to the "Quick Answer" section for locations.
2. Identify the suspected fuse: Use the diagrams above and your vehicle's fuse box lid legend to find the fuse for the component that isn't working.
3. Visual inspection: Many fuses are transparent, allowing you to see if the metal wire inside is broken or melted. If it is, the fuse is blown.
4. Use a fuse tester or multimeter: For a more reliable test, especially with opaque fuses:
   • Fuse Tester: These inexpensive tools light up if the fuse is good. Simply touch the probes to the small metal test points on the top of the fuse.
   • Multimeter: Set your multimeter to continuity mode. Touch one probe to each metal test point on the fuse. A good fuse will show continuity (a beep or a reading close to zero ohms). No continuity means the fuse is blown.
5. Replace if blown: Always replace a blown fuse with a new one of the exact same amperage rating. Using a fuse with a higher rating can lead to serious electrical damage or fire.

Common Blown Fuses on This Vehicle

While fuses can blow for many reasons, some are more common on the 2016 Toyota Corolla:

• CIG / P/OUTLET (15A): These often blow due to overloaded accessories plugged into the 12V outlets, such as high-power phone chargers or air compressors. If your 12V outlets aren't working, check these first.
• RADIO (15A): Issues with aftermarket stereos or short circuits within the infotainment system can cause this fuse to blow, leading to no power to the radio.
• STOP (10A): A blown stop light fuse usually means your brake lights aren't working. This can often be caused by a faulty brake light switch or a short in the brake light circuit.
• BLOWER (40A): If your HVAC fan isn't working on any speed, this high-amperage fuse is a prime suspect. A failing blower motor or resistor can cause it to blow.

What to check first: Before replacing any fuse, try to identify the cause of the blown fuse. If it blows again immediately, there's likely an underlying electrical issue that needs professional diagnosis. Simply replacing fuses without addressing the root cause can lead to recurring problems or further damage.

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