Transfer Fuel Pump (FP) G6 Electrical, Checking

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

Hand held remote control (jumper).
Multimeter.
Electrical connector test lead set.

Test conditions

Battery voltage 12.5 V.
Fuse S228 OK.
Fuse S132 OK.
Fuse S134 OK.

Fuel Pump (FP) Relay J17 OK.
Fuel filter OK.
Ignition switched off.

Test procedure

Perform a preliminary check to verify the customers complaint. Refer to → Preliminary Check

Start diagnosis

TT Coupe

Remove the rear seat bench. Refer to →
- 72 - SEAT - FRAMES
- 72 - SEAT - FRAMES for BODY INTERIOR - CABRIOLET
.

TT Roadster

Remove the right rear side trim panel. Refer to →
- 70 - INTERIOR TRIM
- 70 - INTERIOR TRIM for BODY INTERIOR - CABRIOLET
.

All vehicles

Fig 1: Identifying Right Sealing Flange & Cover Retainers

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Remove the cover retainers - arrows - from the right sealing flange.

Fig 2: Removing Engine Compartment E-Box Cover

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Press both latches in direction of - arrow - and remove the engine compartment E-box cover.

Fig 3: Removing Fuse SB1 From "Fuse Carrier ST2"

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove Fuse SB1 from "fuse carrier ST2" - 2 -.

Fig 4: Connecting Hand Held Remote Control (Jumper) To Terminal On Fuse SB1 And To Battery "+"

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect a Hand held remote control (jumper) to the terminal on Fuse SB1 and to battery "+".
Press the switch on the Hand held remote control (jumper).

NOTE:

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

Listen for an operating noise from the Transfer Fuel Pump (FP) G6.

If no operating noise is heard:

Remove the fuel delivery unit. Refer to → 20 - FUEL SUPPLY SYSTEM .

Fig 5: Checking Electrical Circuit Between Terminals Of Fuel Delivery Unit And Fuel Pump For Continuity

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Using a Multimeter, check the Transfer Fuel Pump (FP) G6 electrical connector terminals 1 to 4 for continuity.

Specified value: 0 Ω.

If the specification was not obtained:

Check the Transfer Fuel Pump (FP) G6 electrical harness connector terminal 1 to 4 for a short circuit to Battery positive (+) or an open circuit.
If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring and the resistance value was not OK:

Replace the Transfer Fuel Pump (FP) G6. Refer to 20 - FUEL SUPPLY SYSTEM .

If no malfunction is detected in the wiring and the resistance value was OK:

If an operating noise is heard:

Checking voltage

Switch the ignition on.
Using a Multimeter, check the Transfer Fuel Pump (FP) G6 electrical harness connector terminal 1 to Ground (GND) for voltage.
Switch the ignition off.

Specified value: Battery voltage.

If the specification was not obtained:

Check the Transfer Fuel Pump (FP) G6 electrical harness connector terminal 1 to the Fuel Pump (FP) Relay J17 socket 23/87 for an open circuit, or a short circuit to Battery positive (+) or Ground (GND).
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.

If the specification was obtained:

Checking Ground (GND)

Using a Multimeter, check the Transfer Fuel Pump (FP) G6 electrical harness connector terminal 5 to the Ground (GND) connection on right lower A-pillar for resistance.

Specified value: 1.5 Ω Max.

If the specification was not obtained:

Check the Transfer Fuel Pump (FP) G6 electrical harness connector terminal 4 to the Ground (GND) connection on right lower A-pillar for an open circuit, or a short circuit to Battery positive (+) or Ground (GND).
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.

If no malfunction is detected in the wiring:

Replace the Fuel Pump (FP) Relay J17.
Assembly is performed in the reverse of the removal.

Final procedures

After the repair work, the following work steps must be performed in the following sequence:

Check the DTC memory.
If necessary, erase the DTC memory. Refer to Diagnostic Mode 04 - Reset/Delete Diagnostic Data .
If the DTC memory was erased, generate readiness code. Refer to Readiness Code Description .

End of diagnosis