FUEL PUMP(for High Pressure) ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK FUEL PUMP OPERATION


    1. Check fuel pressure.


      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

      4. Enter the following menus: Powertrain / Engine / Active Test / Control the Target Fuel Pressure.

      5. Check that the fuel pressure fluctuates when the target fuel pressure changes.

        Tech Tips

        The target fuel pressure operation lowers the target fuel pressure by -12.5% or increases the target fuel pressure by 24.8%.

        Standard
        Fuel pressure fluctuates in accordance with the GTS operation.

        If the result is not as specified, replace the fuel pump or fuel pressure sensor.

    2. Check operating sound.


      1. Remove the injector cover (for bank 2).

      2. Start the engine.

      3. A004HL8

        Using a sound scope, check the operating sound of the pump.

        If no sound can be heard, check the fuel pump, wire harness and ECM.

      4. Stop the engine.

      5. Reinstall the injector cover (for bank 2).