AWD

Delivery Quantity Of Fuel Pump (FP), Checking

Special Tools and Equipment







- VAG1348/3A with VAG1348/3-2
- Measuring container, fuel-tight

Test requirements:
- Battery voltage at least 12 V
- Fuel filter OK
- Ignition switched off.

Test sequence
- Open cover of fuse box at left side of instrument cluster.
- Remove fuse S228 at fuse carrier (position 28) (left row, 5th large fuse from top).







- Connect V.A.G 1348/3A remote control connection using adapter cables from VAG1348/3-2 at right terminal of socket from fuse S228 (arrow).
- Connect alligator clip to vehicle battery B+.
- Remove fuel filler cap from fuel filler tube.







- Remove engine cover (arrows).

CAUTION: Fuel system is under pressure. Before opening system, place rags around the connection point. Then release pressure by carefully loosening connection.







- Disconnect fuel return hose from line connection on fuel rail pipe.
- Connect assisting hose -arrow- on distributor pipe and hold in a measuring container.
- Operate remote control for 15 seconds (keep button pressed).







- Compare fuel quantity pumped with specified value.

*) Minimum delivery rate cubic cm/15 s
**) Voltage at fuel pump with engine off and pump running (approx. 2 volts less than battery voltage).