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Home >> Lexus >> 2023 >> NX 350 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> Camshaft Oil Control Solenoid >> On-Vehicle Inspection [11/2021 - ] >> Procedure

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

  1. INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side) 
    1. Start the engine.
    2. 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.

  2. INSPECT CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side) 
    1. Start the engine.
    2. 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].

      Refer to DATA LIST / ACTIVE TEST [11/2021 - 03/2023] , or refer to DATA LIST / ACTIVE TEST [03/2023 - 03/2024] , or refer to DATA LIST / ACTIVE TEST [03/2024 - ]

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