Transfer Fuel Pump, Electrical Checking

Transfer Fuel Pump, Electrical Checking

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 ] Preliminary Check

Start diagnosis

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





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





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





- 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).

• 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 Fuel Supply System Repair Information.

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





Specified value: 0 ohms.

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 Fuel Supply System Repair Information.

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 ohms 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:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Mode 03 - Read DTC Memory.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Mode 04 - Erase DTC Memory.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Readiness Code.

End of diagnosis