FWD

Supply Quantity Of Fuel Pump (FP), Checking

Recommended special tools and equipment







- VAG1348/3A remote control with VAG1348/3-2 adapter cable
- Measuring container, fuel-tight

Test requirements:
- Battery voltage at least 12.7 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 e.g. VAG1348/3A remote control connection using adapter cables from VAG1348/3-2 at right terminal of socket from fuse S228 (position 28).
- Connect alligator clip to vehicle battery B+.
- Remove fuel filler cap from fuel filler tube

CAUTION: Fuel system is under pressure. Before opening system, place rags around the connection. 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).
- Install fuel return line.

NOTE: Secure all hose connections using hose clamps appropriate for the model type: