Fuel Pump Electrical, Testing

Fuel Pump Electrical, Testing

Special tools, testers and auxiliary items required

• multimeter.

• Electrical connector test lead set.

Test conditions





• Battery voltage 12.5 V.

• Fuse - 27 - in Fuse Panel C is 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 rear seat bench

Test procedure for Fuel Delivery Unit

- Remove the floor sealing cover to access the Fuel Delivery Unit (fuel pump).





- Disconnect the harness connector from the Fuel Delivery Unit.





- Connect the multimeter positive lead to terminal - 1 - of the Fuel Delivery Unit harness connector.

- Connect the multimeter ground to the Battery Negative terminal.

-

- Crank the engine and note voltage displayed on multimeter during crank. Voltage should be within 2.5 volts of battery voltage.

- If voltage is below specification, check voltage supply from the J17 Fuel Pump relay.

- If voltage supply is OK, connect the multimeter ground lead to terminal - 5 - of the Fuel Delivery Unit harness connector.

- Connect the multimeter positive lead to Battery Positive

- Crank the engine and note voltage displayed on multimeter during crank. Voltage should be within 2.5 volts of battery voltage.

- If voltage is below specification, check for open ground circuit or poor ground connection. Repair as necessary.

- If voltage is within specification, replace the Fuel Delivery Unit (Fuel Pump).

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.