Fuel Pump, Electrical Testing

Special tools and workshop equipment 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 procedure 

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK 

Start diagnosis 

-- Remove rear seat bench. Refer to Repair information.

-- 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).

-- Listen for an operating noise from the fuel pump.

If no operating noise is heard:

-- Remove the fuel delivery unit. Refer to Repair information.

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

Specified value: 0 ohms.

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. Refer to Repair information.

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 .
2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .