Operation CHARM: Car repair manuals for everyone.

Fuel Pump: Testing and Inspection

Fuel Pump Operating Check

1. Turn the ignition switch to the OFF positions.
2. Apply battery voltage to the fuel pump drive connector to check that the pump operates.

NOTE: The fuel pump is in-tank type and its operating sound is hard to hear without removing the fuel tank cap.

3. Pinch the hose to check that fuel pressure is felt.

Fuel Pressure Inspection





1. Using the fuel pressure gauge connector (09353-24000 and 09353-24100), install the fuel pressure gauge to the service valve.





2. Disconnect the vacuum hose from the pressure regulator, and plug the hose end. Measure fuel pressure at idle.

Standard value: 300 kPa (44.37 psi)





3. Measure the fuel pressure when the vacuum hose is connected to the pressure regulator.

Standard value: Approximately 250 kPa (37 psi)





4. If the results of the measurements made in steps (2) and (3) are not within the standard value, use the table to determine the probable cause, and make the necessary repairs.





5. Stop the engine and check for a change in the fuel pressure gauge reading, which should hold for approximately 5 minutes. If the gauge indication drops, observe the rate of drop. Use the table to determine the probable cause, and make the necessary repairs.
6. Remove the fuel pressure gauge connector from the service valve.