Camshaft Timing Oil Control Valve Assembly: Inspection

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

Check the resistance.
1. Measure the resistance between the terminals.
  Standard resistance: 6.9 to 7.9 Ω at 20°C (68°F)
  
  If the result is not as specified, replace the oil control valve assembly.
  
  Fig 1: Measuring Resistance Between Camshaft Timing Oil Control Valve Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the operation.

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

Standard

VALVE MOVEMENT SPECIFIED CONDITION

Condition	Specified Condition
Battery positive (+) voltage applied	Valve moves to the left
Battery positive (+) voltage cut off	Valve moves to the right

Fig 2: Checking Camshaft Timing Oil Control Valve Operation

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

NOTE: If the valve does not return properly because of foreign matter intrusion, a small amount of leakage in the advanced direction may occur and a DTC may be output.