2017 Honda Civic Fuse Box Diagram & Amperage Guide

Quick Answer

Your 2017 Honda Civic has two main fuse box locations:

• Under-hood Fuse/Relay Box: Located in the engine compartment, typically near the battery.
• Interior Fuse Box: Located in the cabin, usually behind a panel on the driver's side kick panel.

Under-hood Fuse/Relay Box

The under-hood fuse box contains high-current fuses for major components and various relays. Always refer to the diagram on the fuse box lid for the most accurate information for your specific trim level, as configurations can vary slightly.

Main Fuses

Standard Fuses

Relays

Commonly found relays in the under-hood fuse box include:

• Main Relay: Powers various engine components.
• Fuel Pump Relay: Controls power to the fuel pump.
• Starter Cut Relay: Engages the starter motor.
• Radiator Fan Relays (Main, Sub): Controls the cooling fans.
• A/C Clutch Relay: Activates the air conditioning compressor clutch.
• Headlight Relays (Low/High Beam): Controls power to the headlights.
• Horn Relay: Activates the horn.

Interior Fuse Box

The interior fuse box protects various accessories and cabin electronics. It is typically located behind a panel on the driver's side kick panel, below the dashboard. You may need to remove a plastic cover to access it. Again, consult your owner's manual or the diagram on the cover for precise locations and ratings.

Note: Honda Civic models typically do not have a separate fuse box in the trunk or cargo area for standard trims. Any related components like rear power outlets or trailer wiring would typically be routed through the interior or under-hood fuse boxes.

How to Test a Fuse

Testing a fuse is a straightforward process that can help you identify electrical issues. Here's how:

1. Locate the fuse box: Refer to the Quick Answer section above to find the correct fuse box.
2. Identify the suspect fuse: Use the diagrams above and your vehicle's fuse box lid diagram to find the fuse associated with the component that isn't working.
3. Visual inspection: Many fuses have a clear plastic body. Look for a broken wire inside. If it's broken, the fuse is blown and needs replacement.
4. Use a fuse tester or multimeter:
   • Fuse Tester: A simple tool with a light. Touch the probes to the top of the fuse's two exposed metal test points. If the light illuminates on both sides, the fuse is good. If it only lights on one side or not at all, the fuse is blown.
   • Multimeter: Set your multimeter to read continuity (often indicated by a speaker icon). With the fuse removed from its slot, touch the multimeter probes to each metal blade of the fuse. A good fuse will show a reading close to zero ohms and may beep. A blown fuse will show an "open circuit" or no reading.
5. Always replace a blown fuse with one of the exact same amperage rating and type. Using a fuse with a higher rating can lead to serious electrical damage or fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more common due to their circuits' usage or typical failure points. If you're experiencing an issue, check these first:

• Cigar Lighter/12V Power Outlet Fuse (Interior Fuse Box - F3, 15A Blue): Often blows due to overcurrent from charging devices or faulty accessories. If your phone charger or dash cam stops working, this is the first place to check.
• Radio/Infotainment System Fuse (Interior Fuse Box - F2, 7.5A Brown): If your radio or display unit suddenly goes blank or won't turn on, this fuse might be the culprit. Check for any recent work on the audio system or aftermarket installations that could have caused a short.
• Headlight Fuses (Under-hood Fuse Box - F14/F15, 15A Blue for Low Beams; F24/F25, 20A Yellow for High Beams): One or both headlights not working can often be traced to a blown fuse, especially if the bulbs themselves appear good.
• Blower Motor Fuse (Interior Fuse Box - F1, 10A Red): If your HVAC fan isn't working on any speed, this fuse could be blown. However, it's also common for the blower motor resistor to fail, which can sometimes lead to a blown fuse or simply cause certain fan speeds to stop working.
• Fuel Pump Fuse (Under-hood Fuse Box - F19, 15A Blue): If your car cranks but doesn't start, and you don't hear the fuel pump prime when turning the key to the "ON" position, this fuse is a prime suspect. Always verify other starting components as well.

When troubleshooting, always check the simplest solutions first. If a fuse is continually blowing, it indicates a deeper electrical issue that needs professional diagnosis.

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