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 CHART

Tester Connection	Specified Condition
1 (+B) - 2 (GND)	6.9 to 7.9 kΩ 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 Using Ohmmeter

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

Check the operation.
1. Apply battery voltage across the terminals, and check that the spool 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: Applying Battery Voltage Across Terminals
  Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.