Transfer Fuel Pump, Checking

Transfer Fuel Pump, Checking

Special tools, testers and auxiliary items required

• Hand held remote control (jumper).

• Multimeter.

• Electrical connector test lead set.

Test conditions

• Battery voltage at least 12.5 volts

• Fuel filter OK.

• Ignition switched off.

Test procedure

- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check.

• When the door is opened the fuel pump is activated for 2 seconds to build up the pressure in the fuel system.

• Models with an airbag are installed with a fuel shut - off system. It reduces the danger of a fire in a crash as the fuel pump is switched off via the fuel pump relay.

Test sequence

- Remove the rear seat bench. Refer to the appropriate service manual.

- Remove the fuel delivery unit cover located under the right rear seat. Refer to the Repair Manual for seat removal.

- Disconnect the electrical harness connector from the Transfer Fuel Pump (FP) (G6) fuel delivery unit.

- Connect a hand - held remote control (jumper) to terminal 1 of the fuel delivery unit and to vehicle battery voltage.

- Connect a jumper cable from an Electrical connector test lead set to terminal 4 of the fuel delivery unit and to vehicle Ground (GND).






- Press 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 fuel pump.

If the specified value was not obtained:

- Remove the fuel delivery unit.

- Using a Multimeter, check the electrical circuit between terminals 1 to and 4 of the fuel delivery unit pump motor for resistance.






Specified value: 1.5 ohms max.

If the specified value was Not obtained:

- Check the wiring for an open circuit, a short circuit.

- Check the electrical harness connector for damage, corrosion, loose or broken terminals.

- If necessary, repair the wiring connection.

If the specified value was obtained:

- Replace the Fuel delivery unit (GX1)

Final procedures

- Reinstall the fuel delivery unit cover located under the right rear seat. Refer to the Repair Manual for seat removal.

- Reinstall the rear seat bench. Refer to the appropriate service manual.

- 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 Modes 01 - 09.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.

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