Fuel Pump Relay (VANAGON)
- Check terminal No. 30 and terminal No. 86 of fuel pump relay for battery voltage. If battery voltage is not present, check circuit for short or open circuit.
- If battery voltage is present, remove relay and attach ohmmeter probe to terminal No. 85. Attach other probe to ground. Continuity should be present while cranking engine.
- If not, check for continuity between terminal No. 85 of fuel pump relay and terminal No. 3 of ECU connector. If continuity is present, circuit is okay but ECU is not switching to ground. Replace ECU and install fuel pump relay.
- If fuel pump will not operate, turn ignition switch to the "OFF" and then "ON" position. Ensure battery voltage is present at fuel pump relay No. 87 for about 5 seconds after ignition is switched on. If not, replace fuel pump relay. If okay, check voltage supply and ground circuit of fuel pump. If okay, replace fuel pump.
Courtesy of VOLKSWAGEN UNITED STATES, INC.