Fuel Tank - Front Wheel Drive (FWD) - As of 11.04

Fuel Pump, Testing (Electrical Test)







Special tools, testers and auxiliary items required
- Remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-3
- Portable multimeter V.A.G 1526 B
- Connector test set V.A.G 1594 C







Test conditions
- Battery voltage at least 12.5 V.
- Fuse on fuse panel S228 (position 28) OK.







- Vehicles with MPI engine: Fuel Pump (FP) Relay J17 - arrow - at position 1 in 9-socket relay carrier behind driver side storage compartment is OK.







- Vehicles with FSI engine: Fuel Pump (FP) Control Module J538 OK; check checking (Vehicles with FSI engine).
- Fuel filter OK
- Ignition switched off.

Test sequence

Sedan:
- Remove carpeting in luggage compartment.
- Fold forward right rear seat backrest, if necessary.

Wagon:
- Remove left 1/3 backrest Body Interior -.
- Remove left side luggage compartment trim and dirt tray Body Interior -.







All models:
- Unbolt cover for locking flange in luggage compartment - arrows -.







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







- Connect remote control V.A.G 1348/3 A with connection V.A.G 1348/3-3 to contact -1- using an adapter cable from connector test set V.A.G 1594 C.
- Using insulating tape, tape over the second contact of connection V.A.G 1348/3-3 to prevent a short circuit - arrow -.
- Connect contact -4- to vehicle ground (GND) using a jumper cable from connector test set V.A.G 1594 C.
- Connect alligator clip to vehicle battery (+).
- Press switch on remote control.
- Running noise of pump must be audible.

NOTE: Fuel Pump (FP) runs quietly. Avoid surrounding noises while testing the fuel pump.







If no operating noise can be heard:
- Remove fuel delivery unit
- Check if electrical wiring between flange and fuel pump is connected and has continuity.

If no malfunction is detected in wires, Fuel Pump (FP) is faulty - replace fuel pump.
- Install fuel delivery unit.