Fuel Pump (FP) Electrical Testing

Fuel Pump Electrical, Testing

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 - 29 - in fuse holder at left of instrument panel is OK.
- Fuel filter OK.
- Ignition switched off.

Test sequence
- Remove rear seat bench.







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







- Disconnect the electrical harness connector - arrow - from the fuel delivery unit.
- Connect a Hand held remote control (jumper) to terminal - 1 - of the fuel delivery unit and to vehicle battery (+).







- Connect a jumper cable from a Electrical connector test lead set to terminal - 5 - of the fuel delivery unit and to vehicle Ground (GND).
- Press 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 fuel pump.

If no operating noise is heard:
- Remove the fuel delivery unit.







- Using a Multimeter , check the electrical circuit between terminals - 1 - and - 5 - of the fuel delivery unit for continuity.
Specified value: 0 ohm.

If a malfunction is detected in the electrical circuit:
- Check the wiring for a short circuit to Battery positive (+) or an open circuit.
- Check the electrical harness connector for damage, corrosion, lose or broken terminals.
- If necessary, repair the electrical circuit.
- If no malfunction is detected in electrical circuit, replace the fuel pump.

Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code.

- End of diagnosis.