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 relay box terminal No. 85. Attach other probe to ground. Continuity should be present while cranking engine.
If continuity is not present, 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 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 battery voltage is not present, replace fuel pump relay. If battery voltage is present, check voltage supply and ground circuit of fuel pump. If fuel pump wiring is okay, replace fuel pump.

Fig 1: Fuel Pump Relay Circuit Schematic (Vanagon)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

FUEL PUMP RELAY & FUSE NUMBER

Application

Relay No.

Fuse No.

Cabriolet

Corrado, Golf GL/GTI, Jetta & Jetta GLi

Fox

Vanagon

⁽¹⁾

⁽²⁾

⁽¹⁾	Relay located in relay box left side of engine compartment. Fused through the AFC-Digifant II ECU control relay.

⁽²⁾	Fuse and terminal No. molded into plastic fuse box housing.