Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Camshaft Timing Oil Control Valve Assembly: Inspection
- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the resistance of the oil control valve.
Standard resistance:
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 assembly.
- Inspect the operation.
- Connect the battery positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and inspect the movement of the valve.
Specified condition
STANDARD SPECIFICATIONCondition 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 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.
- Connect the battery positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and inspect the movement of the valve.
- Measure the resistance of the oil control valve.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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