Solenoid, Variable Valve Timing (VVTS), Exhaust: Operation

WARNING: This page is about a different variant/trim than selected.

The Variable Valve Timing (VVT) assembly is actuated with engine oil pressure. The oil flow to the VVT assembly is controlled by an Variable Valve Timing Solenoid (VVTS). The VVTS consists of a Pulse Width Modulated (PWM) solenoid and a spool valve. The Powertrain Control Module (PCM) actuates the VVTS to control oil flow through the spool valve into the VVT assembly. The VVT assembly consists of a rotor, stator, and sprocket. The stator is connected to the timing chain through the sprocket. The rotor is connected to the camshaft. Oil flow into the VVT assembly rotates the rotor with respect to the stator, thus rotating the camshaft with respect to the timing chain and camshaft. An infinitely variable valve timing position can be achieved within the limits of the hardware. The Camshaft Position (CMP) sensor monitors the position of the camshaft with respect to the crankshaft and provides feedback to the PCM.