Camshaft Timing Oil Control Valve Assembly: Inspection

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard

STANDARD REFERENCE

Tester Connection	Specified Condition
1 (+B) - 2 (GND)	6.9 to 7.9 Ω at 20°C (68°F)

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

Fig 1: Measuring Resistance Between Terminals

Check the operation.
1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, and check that the valve operates.
  NOTE: Check that the spool valve is not stuck.
  
  HINT:
  
  The spool valve may not return if foreign objects are caught in it. This may cause subtle pressure leakage to the advance side, and a DTC may, be set.
  
  Fig 2: Checking Valve Operates
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002