Relay Test (VANAGON Only)

The power supply and fuel pump relays are located in the engine compartment in a plastic box on the firewall. The fuel pump relay is mounted on the right side of the box and power supply relay on the left. To test relay, use the following procedures:

1. Unplug all electrical connectors to injectors. To check power to relays, turn ignition on. Use test light to check for voltage at terminals No. 30 and 85 of both relays. Power supply relay should also have voltage at terminal No. 85. If not, check wiring.
2. Terminal No. 87 of fuel pump relay should have voltage when starter is operated. If not, check wiring. If wiring is good, check relay. If relay is good, replace ECU.