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Home >> Lexus >> 2008 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> Camshaft Timing Oil Control Valve Assembly >> On-Vehicle Inspection
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On-Vehicle Inspection

  1. CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
    1. Check the operation.
      1. Warm up the engine.
      2. Turn the ignition switch OFF.
      3. Connect Techstream to the DLC3.
      4. Turn the ignition switch ON.
      5. Turn the tester ON.
      6. Enter the following menus:

        Select: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1 or Bank 2).

      7. Check the engine speed when the OCV is operated by the Techstream.

      Standard condition 

      SPECIFIED CONDITION CHART

      Condition Specified Condition
      VVT system is OFF (OCV is OFF) Normal engine speed
      VVT system is ON (OCV is ON) Rough idle or engine stalled

      If the operation is not as specified, check the oil control valve, wire harness and ECM.

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