AWD

Special tools and equipment







- 3217 special tool
- VAG1348/3 - 2
- VAG1348/3A
- VAG1526A
- VAG1594A

Test requirements
- Battery voltage at least 12 V
- Fuse S228 OK (position 28)







- Relay 4 in micro-central electrics (in driver's footwell, left) OK
- Fuel filter OK
- Ignition switched off

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







- Connect VAG1348/3A remote control connection using adapter cables from VAG1348/3-2 at right terminal of socket from fuse -S228- (arrow).
- Connect clamping terminal to B+.
- Press switch of remote control.
- Pump noise


NOTE: Fuel Pump (FP) runs quietly. Surrounding noise should be avoided during test of the Fuel Pump (FP).


If no noise can be heard:
- Remove rear seat bench.
- Unscrew cover at right beneath rear seat bench







- Disengage 4-pin electrical harness connector and remove (arrow).







- Connect multimeter between terminal 1 and 4 of harness connector for voltage measurement.
- Press switch of remote control.
- Specification: approx. battery voltage

If specified value is not obtained:
- Locate and repair open circuit using wiring diagram.

If specified value is obtained, although no operating noise can be heard from pump, remove connecting flange as follows:
- Note radio code (for vehicles equipped with coded anti-theft radio). Obtain if necessary.







- If installed, remove cover above battery (arrows).
- Open battery protective casing (Velcro).







- Switch ignition off and disconnect battery Ground (GND) strap (arrow).


WARNING!
Fuel tank must be less than 1/3 full when removing fuel pump.


- Remove fuel from tank if necessary. Refer to "Fuel Tank, Emptying (All wheel drive)", Testing and Inspection
- Remove rear seat bench -2-.
- Unscrew cover at right beneath rear seat bench.


WARNING!
Fuel supply pipes are under pressure! Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.







- Disconnect fuel supply line -1- and fuel return line -2- (press release button).







- Use ring nut spanner 3217 to remove and install
- Remove connecting flange of fuel pump via opening of fuel tank and lay aside with wires connected.
- Check whether electric wires between flange and Fuel Pump (FP) are connected, check for continuity if necessary.

If no malfunctions are found in wires:
- Fuel Pump (FP) faulty; remove fuel pump. Refer to "Fuel Pump, Removing and Installing (All wheel drive)", Service and Repair