FUEL PUMP (for High Pressure) ON-VEHICLE INSPECTION


  1. FUEL PUMP WITH SEAL SUB-ASSEMBLY 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 Offset / Fuel Pressure (High).

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

        Tech Tips

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

        If the result is not as specified, replace the fuel pump with seal sub-assembly or fuel pressure sensor.

    2. Check operating sound.


      1. Remove the No. 1 engine cover sub-assembly Click here.

      2. Remove the fuel pump protector Click here.

      3. Start the engine.

      4. Using a sound scope, check the operating sound of the fuel pump with seal sub-assembly.

        If no sound can be heard, check the fuel pump with seal sub-assembly, wire harness and ECM.

      5. Stop the engine.

      6. Install the fuel pump protector Click here.

      7. Reinstall the No. 1 engine cover sub-assembly Click here.