Toyota 15330-21011 Valve Assy, Camshaft Timing Oil Control

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VVT is used on all the models depending on the oil pressure to shift the intake camshaft sprocket actuator, which improves the power, economy, and emissions under certain situations. They include; the PCM, VVT OCV, OCV filter, and intake camshaft sprocket actuator. PCM turns on the oil control valve depending on signals that several sensors send thus directing the oil pressure to either advance or retard the camshaft. The actuator assembly includes an axillary pin that is used to change the camshaft with the help of oil pressure, and fixed vanes which can rotate the hub in the range of 21 degrees at maximum. A detection procedure of the VVT system includes checking the oil control valve filter for blockage because of problems mainly from the valve and the filter with respect to the oil and filter change. Their performance is checked by using resistance and also checking the movement of the plunger when voltage is being supplied to the oil control valve. The final inspection process entails the valve cover and intake camshaft withdrawal to effect camshaft snout cleaning as well as proper re-assembly of the actuator assembly that has to rotate as a result of air pressure. If any of the components are not working properly then replacements are needed, and the process of reassembling is done in the sequence opposite to the process of disassembling.