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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Fuel System (2UR-GSE) - Service Information) >> FUEL PUMP (for High Pressure) >> On-Vehicle Inspection [11/2021 - ] >> Procedure

On-Vehicle Inspection [11/2021 - ]: Procedure

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  1. FUEL PUMP WITH SEAL SUB-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 / Fuel Press.

        Powertrain > Engine > Active Test 

        Active Test Display
        Control the Target Fuel Pressure
        Data List Display
        Fuel Press
      5. 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 25%.

        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 V-bank cover sub-assembly.

        Refer to PROCEDURE - Step 2

      2. Start the engine.
      3. 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.

      4. Stop the engine.
      5. Install the V-bank cover sub-assembly.

        Refer to PROCEDURE - Step 91

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