Finding it:
The PDC is usually located near the battery, often under a plastic cover. The best way to find the relay is to:
1. Consult your owner's manual: This is the most reliable source. It will have a diagram showing the fuse and relay locations in the PDC.
2. Look for a diagram on the inside of the PDC cover: Many PDC covers have diagrams printed on the inside, indicating what each fuse and relay controls.
3. Use a multimeter: If you can't find it visually, use a multimeter to test the relays. This requires some electrical knowledge and caution. It involves checking for continuity (resistance) across the terminals of the relay, though this might be difficult to do without a wiring diagram.
Important Note: Without a diagram specifically for your 1993 Voyager's PDC, pinpointing the fuel pump relay visually is difficult. There's no single universally applicable location. Relying on the owner's manual or a wiring diagram specific to your vehicle is the safest and most accurate method.