Camshaft Timing Oil Control Valve Assembly: Inspection

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

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.

Fig 1: Measuring Resistance Between Camshaft Timing Oil Control Valve Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

TERMINALS REFERENCE CHART

Condition	Specified Condition
Battery positive (+) voltage is applied	Valve moves in black arrow direction shown in illustration
Battery positive (+) voltage is cut off	Valve moves in white arrow direction shown in illustration

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

NOTE: If the valve cannot return properly because of foreign matter, a small pressure leak in the advanced direction may occur and a DTC may be output.

Fig 2: Checking Movement Of Valve