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Variable Valve Timing Actuator: Testing and Inspection

INSPECTION

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

a. Measure the resistance of the oil control valve.

Standard resistance: 6.9 to 7.9 ohms at 20 °C (68 °F)

If the result is not as specified, replace the camshaft timing oil control valve assembly.

b. Inspect the operation.

1. Connect the battery positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and inspect the movement of the valve.








If the result is not as specified, replace the camshaft timing oil control valve assembly.

NOTE: Confirm that the valve moves freely and is not stuck in any position.

HINT: Foreign objects in the oil can cause subtle pressure leaks in the valve. The pressure leaks will cause the cam to advance. This condition will usually set a DTC.
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