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Home >> Lexus >> 2024 >> TX 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> Camshaft Oil Control Solenoid >> On-Vehicle Inspection [09/2023 - ] >> Procedure

On-Vehicle Inspection [09/2023 - ]: Procedure

  1. INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side) 

    Pre-procedure1

    • for 1Motor-HEV Model:
      1. Put the engine in Inspection Mode (Maintenance Mode).

        Powertrain > Hybrid Control > Utility 

        Tester Display
        Inspection Mode
    • Start the engine.
    • Read the Data List while performing the Active Test with the engine idling.

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Intake VVT OCV Duty Ratio Bank 1
      Data List Display
      Intake VVT Change Angle Bank 1

      Standard Condition

      GTS Operation Data List (Intake VVT Change Angle Bank 1)
      -100% to 100% Varies by 70 DegFR or more

      If the result is not as specified, check the cam timing oil control solenoid assembly, wire harness and ECM.

    Post-procedure1

    • None
  2. INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side) 

    Pre-procedure1

    • for 1Motor-HEV Model:
      1. Put the engine in Inspection Mode (Maintenance Mode).

        Powertrain > Hybrid Control > Utility 

        Tester Display
        Inspection Mode
    • Start the engine.
    • According to the display on the GTS, perform the Active Test and check the engine speed while operating the cam timing oil control solenoid assembly.

      Powertrain > Engine > Active Test 

      Tester Display
      Control the Exhaust VVT OCV Duty Ratio Bank 1

      Standard Condition

      GTS Operation Engine Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls

      HINT: 

      Refer to "Data List / Active Test" [Exhaust VVT Hold Learn Value Bank 1, Exhaust VVT Change Angle Bank 1, Exhaust VVT OCV Control Duty Ratio Bank 1 and Exhaust VVT Target Angle Bank 1].

      If the result is not as specified, check the cam timing oil control solenoid assembly, wire harness and ECM.

    Post-procedure1

    • None