FUEL PUMP ELECTRICAL, CHECKING
Special tools and workshop equipment 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 .
Press both latches in direction of -arrow- and remove engine compartment E-box cover.
Scheme 34
Remove fuse -arrow- at position 1 from "fuse carrier ST2" (brown) -2-.
Scheme 35
Connect V.A.G 1348/3A with V.A.G 1348/3-2 to terminal on fuse to fuel pump and battery positive.
Scheme 36
Press switch on the V.A.G 1348/3 A.
- Running noise of pump must be audible.
Note. 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. Refer to Removal and Installation .
TT Roadster
Remove the right side rear panel trim panel. Refer to Removal and Installation .
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.
Scheme 37
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 .
Check if the electrical wiring between the flange and fuel pump is connected and has continuity.
Scheme 38
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 FUEL DELIVERY UNIT .