It's usually located either in the underhood fuse box (sometimes called the Power Distribution Center or PDC) or in a smaller fuse box inside the passenger compartment. Your best bet is to:
1. Consult your owner's manual: This is the most reliable source. Look for a diagram of the fuse and relay boxes.
2. Check the underhood fuse box: This is the most common location. The box usually has a cover with a diagram showing the location and function of each fuse and relay. Look for a relay labeled "Fuel Pump" or something similar. Sometimes the label might just indicate the circuit it controls (e.g., a specific fuel injection circuit).
3. Look in the interior fuse box (if present): If you don't find it under the hood, some models have a smaller fuse box inside the car, often located under the dash or in the center console. Again, check for a diagram.
4. Use a wiring diagram: A wiring diagram for your specific year, make, model, and engine will show you the exact location of the fuel pump relay. You can often find these online through repair manuals or automotive websites.
Without your specific vehicle's details (engine size, trim level, etc.), providing a precise location is impossible. Using the above steps will greatly increase your chances of finding it.
