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# CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY > ON-VEHICLE INSPECTION

## for Preparation Click here

1. CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

1. Connect the intelligent tester to the DLC3.

1. Start and warm up the engine.

1. Select the VVT from the Active Test menu.

1. With the engine idling, check the engine speed when the OCV is operated by the intelligent tester.

   OK:

     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 result is not as specified, replace the OCV assembly.