Fuel Pump, Electrical Checking

Fuel Pump, Electrical Checking

Special tools, testers and auxiliary items required

• Hand held remote control (jumper).

• Multimeter.

• Electrical connector test lead set

• Pressure gauge set

Test conditions

• Battery voltage 12.5 V.

• Fuse (SC1) OK.

• Fuel Pump (FP) Control Module (-J538-) OK

• Fuel filter OK.

• Ignition switched off.

Test procedure

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

- Remove rear seat bench





- Unbolt cover for right locking flange - arrows -.





- Disconnect electrical harness connector - arrow - at locking flange.

- Connect a Hand held remote control (jumper) to terminal 1 using an adapter cable from connector test set.

- Connect contact 5 to vehicle ground (GND) using a jumper cable from the connector test set.

- Connect an alligator clip to vehicle battery positive (+).

- Press the switch on remote control.

• Running noise of pump must be audible.

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

If an operating noise is heard, check the voltage as shown below.

If no operating noise can be heard:

- Remove fuel delivery unit.





Checking internal resistance

- Using a Multimeter, check the Fuel Pump (FP) (G6) electrical connector terminals 1 to 5 for continuity.

Specified value: 0 ohms.

If the specification was not obtained:

- Check the Fuel Pump (FP) (G6) electrical harness connector terminals 1 to 5 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 Fuel Pump (FP) (G6).

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

Checking voltage

- Switch the ignition on.

- Press the switch on the Hand held remote control (jumper)

- 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) Control Module (-J538-) terminal 1 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)

- Check the Transfer Fuel Pump (FP) (G6) electrical harness connector terminal 5 to the Ground (GND) connection 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) Control Module (-J538-).

- Assembly is performed in the reverse of the removal.

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 ] Monitors, Trips, Drive Cycles and Readiness Codes.