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
- Check the resistance.
- Using an ohmmeter, measure the resistance between the terminals.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard resistance
STANDARD RESISTANCE SPECIFICATIONSTester 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.
- Using an ohmmeter, measure the resistance between the terminals.
- Check the operation.
- Connect the positive (+) lead from the battery to terminal 1 and the 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 matter is caught in it. This may cause subtle pressure leakage to the advance side, and a DTC may
- Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the valve operates.
- Check the resistance.
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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.