Camshaft Timing Oil Control Valve Assembly: Inspection

1. Using an ohmmeter, measure the resistance between the terminals.
2. Connect the battery's positive (+) lead to terminal 1 and negative (-) lead to terminal 2. Check the movement of the valve.

   OK: 

   RESULT CHART
   
   

   Condition	Result
   Battery positive voltage is applied	Valve moves in left arrow direction shown in illustration
   Battery positive voltage is cut off	Valve moves in right arrow direction shown in illustration

If operation is not as specified, replace the valve.

Fig 1: Checking Camshaft Timing Oil Control Valve Assembly Operation

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.