Fuel Pump Relay (Golf & JETTA)
- Ensure fuel pump fuse is not blown. If okay, remove fuel pump relay from fuse/relay panel See Figure
. Remove hall sender primary connector at ignition coil. With ignition on, check for battery voltage between the following locations:
- terminal No.2 and ground
- terminal No. 1 and terminal No. 2
- terminal No. 1 and terminal No. 4
- If voltage is not present, current is not reaching the relay. Repair as necessary and check fuel pump operation. If voltage is present, check for battery voltage between the following locations:
- terminal No. 1 and terminal No. 5
If voltage is not present, repair as necessary and check fuel pump operation.
- If voltage is present, briefly touch middle wire of distributor primary wiring harness connector, at distributor, to ground. If voltage drops, replace fuel pump relay and check hall sender. If voltage does not drop, check hall sender control unit.
- If no faults can be found but the fuel pump operates only when the relay is by-passed, replace fuel pump relay.