To find it, you'll need to:
1. Consult your owner's manual: This is the best place to start. It should have a diagram of your fuse box(es) showing the relay locations.
2. Check the under-hood fuse box diagram: The cover of the fuse box usually has a diagram printed on the inside of the lid. Look for a relay labeled "fuel pump," "EFI," or something similar. Sometimes the diagram uses symbols rather than words.
3. Look for a separate fuse/relay box inside the car: Some Mazda 626 models have an additional fuse/relay box inside the passenger compartment. This is typically located under the dashboard, often near the steering column. Again, check for a diagram on the cover.
4. Use a multimeter (if you're comfortable with basic electrical work): If you can't find it visually, you could use a multimeter to test relays in each fuse box to identify the one that controls the fuel pump. Caution: Be extremely careful working with automotive electrical systems. Incorrect procedures could damage your vehicle or cause injury.
If you can't locate the relay after trying these steps, it's best to consult a Mazda mechanic or a qualified auto electrician. They'll have access to wiring diagrams and the experience to identify the relay safely and accurately.
