FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Variable Valve Timing Solenoid: Description and Operation

Valve Timing Control System:




PURPOSE
To allow the Engine Control Module (ECM) to adjust intake valve timing, according to engine operating conditions.

Valve Timing Control Operation:




OPERATION
The Valve Timing Control (VTC) Solenoid Valve controls oil pressure which regulates the position of the intake camshaft.