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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Fuel System (Service Information) [A25A-FKS]) >> FUEL PUMP (for High Pressure) >> On-Vehicle Inspection [08/2020 - ] >> Procedure

On-Vehicle Inspection [08/2020 - ]: Procedure

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  1. FUEL PUMP ASSEMBLY OPERATION 
    1. Check fuel pressure.
      1. Connect the Techstream to the DLC3.
      2. Start the engine.
      3. Turn the Techstream on.
      4. Enter the following menus: Powertrain / Engine / Active Test / Control the Target Fuel Pressure Offset.

        Powertrain > Engine > Active Test 

        Active Test Display
        Control the Target Fuel Pressure Offset
        Data List Display
        Fuel Pressure (High)
      5. Select the Data List item: Fuel Pressure (High).
      6. Check that the fuel pressure fluctuates when the target fuel pressure changes.

        HINT: 

        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 assembly or fuel pressure sensor.

    2. Check operating sound.
      1. Remove the No. 1 engine cover sub-assembly.

        Refer to PROCEDURE - Step 20

      2. Start the engine.
      3. Using a sound scope, check the operating sound of the fuel pump assembly.

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

      4. Stop the engine.
      5. Install the No. 1 engine cover sub-assembly.

        Refer to PROCEDURE - Step 47

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