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)

• Multimeter (V.A.G 1526D)

• Connector Test Set (V.A.G 1594C)

Procedure

Observe test conditions, refer to => [ Test Conditions ] General Information.

- Press both latches in direction of - arrow - and remove engine compartment E-box cover.






- Remove fuse - arrow - at position 1 from "fuse carrier ST2" (brown) - 2 -.






- Connect (V.A.G 1348/3A) with (V.A.G 1348/3-2) to terminal on fuse to fuel pump and battery positive.






- Press switch on the (V.A.G 1348/3 A).

• Running noise of pump must be audible.

• The fuel pump runs quietly. Avoid surrounding noises while testing the fuel pump.

If no operating noise can be heard:

TT Coupe:

- Remove rear seat bench.

TT Roadster:

- Remove the right side rear panel trim panel.

All Vehicles:

- Unclip catches - arrows - of the right connector flange cover.






- Disconnect the connector - arrow - from the locking flange.






- Connect multimeter between terminal - 1 and 5 - of harness connector for voltage measurement.






- Press the switch on the remote control.

• Specified value: approximately battery voltage.

If the specification is not obtained:

- Repair open circuit in wiring according to wiring diagram.

If specified value is obtained, although no running-noise can be heard at pump:

- Install the 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 fault is detected in the wiring:

- Fuel pump faulty. Replace the fuel delivery unit.

Assemble in reverse order of disassembling. Note the following:

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