* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. The relay itself may be labeled, or you might need to consult your owner's manual or a wiring diagram to identify it. Look for a relay that's related to the fuel pump, fuel injection, or engine control system.
* Under the dash in the fuse box: Some models placed relays in a secondary fuse box under the dash.
* In the engine compartment, not within the fuse box: Less common, but possible, particularly if the vehicle has significant aftermarket modifications.
To find it, you should:
1. Consult your owner's manual: This is the best starting point. It will have a diagram showing fuse and relay locations.
2. Use a wiring diagram: A wiring diagram specific to your van's year, engine, and trim level will show the relay location and its circuit. You can often find these online through repair manual websites or forums.
3. Look closely in both fuse boxes: Carefully examine each relay in both the under-hood and under-dash fuse boxes. Some relays are labeled, but many are not.
4. Trace the fuel pump wiring: If you can't find it by visual inspection, try tracing the wiring harness leading to the fuel pump. This wire should lead back to the relay.
Important Note: Always disconnect the negative battery cable before working with electrical components to prevent accidental short circuits.
