Variable Valve Timing Actuator: Testing and Inspection

1NZ-FXE ENGINE CONTROL SYSTEM: CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY: INSPECTION

INSPECTION

1. 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.
Specified condition:






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.