Fuel Pump Electrical, Checking

Fuel Pump Electrical, Checking

Special tools, testers and auxiliary items required

• Remote control (V.A.G 1348/3A) with adapter cable (V.A.G 1348/3-2)

• Hand-held multimeter (V.A.G 1526C)

• Connector test set (V.A.G 1594C)

Procedure





Observe test conditions. Refer to => [ Test Conditions ] Test Conditions.

- Remove rear seat bench.

- Unbolt cover for right locking flange - arrows -.

- Disconnect electrical harness connector - arrow - at locking flange.





- Connect (V.A.G 1348/3A) with (V.A.G 1348/3-2) with an adapter cable from (V.A.G 1594C) at terminal - 1 -.





- Connect contact - 5 - to vehicle ground (GND) using a jumper cable from the (V.A.G 1594C).

- Connect alligator clip to battery "+".

- Press the switch on the remote control.

• Running noise of pump must be audible.

• Fuel pump (FP) runs quietly. Avoid surrounding noises while testing the fuel pump.

If no operating noise can be heard:





- Remove fuel delivery unit. Refer to => [ Fuel Delivery Unit ] Fuel Delivery Unit.

- Check if the electrical wiring between the flange and fuel pump is connected and has continuity.

If no malfunction is detected in the wires, the fuel pump is faulty. Replace the fuel delivery unit.

- Install fuel delivery unit. Refer to => [ Fuel Delivery Unit ] Fuel Delivery Unit.