Fuel pump electrical, testing

Special tools, testers and auxiliary items required

Test conditions

Test sequence

Open cover of fuse box at left side of instrument cluster.
Connect Hand held remote control (jumper) between right terminal of socket from fuse S228 and vehicle battery B+.
Press button of remote control.

NOTE:

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

If no operating noise can be heard:

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

CAUTION: Wear protective gloves!

Fig 1: Removing Cover Bolts For Locking Flange

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 2: Identifying Right Locking Flange Electrical Harness Connectors

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fig 3: Identifying Connector Terminals 1 And 4

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect a multimeter between terminals 1 and 4 of the electrical harness connector and test for voltage.
Press switch of remote control.

Specified value: approx. battery voltage

If the specified value was not obtained:

Check the wiring for a short circuit to Ground (GND) or an open circuit.
Check the electrical harness connector for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.

If specified value is obtained, although no running-noise can be heard at pump:

Fig 4: Checking If Electrical Wiring Between Flange And Fuel Pump Is Connected And Has Continuity

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Check if the electrical wiring between the flange and fuel pump is connected and has continuity

If no malfunction is detected in the wires, replace the fuel pump.

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 .