* Under the hood in the relay box: This is the most common location. The relay box is usually located near the battery, often on the driver's side fender well. You'll need to open the box (usually held in place by clips or screws) to find the relay. The relay itself might be labeled, or you might need to consult your owner's manual or a wiring diagram to identify the correct one.
* Inside the cabin, under the dashboard: Less common, but possible. This would typically be near the fuse box.
To find it definitively:
1. Consult your owner's manual: This is the best resource. The manual will have a diagram showing the location of all fuses and relays.
2. Use a wiring diagram: A wiring diagram (available online or through a repair manual) will show you the location and circuit path of the fuel pump relay. This is useful if the relay isn't clearly labeled.
3. Search online forums: Many Nissan Sentra forums have threads discussing fuel pump relay locations with pictures. Searching "2002 Nissan Sentra fuel pump relay location" should yield helpful results.
Remember to always disconnect the negative battery terminal before working with electrical components. If you are unsure about any aspect of this process, it's best to consult a qualified mechanic.
