Celica GT-S L4-1.8L (2ZZ-GE) (2000)
Variable Valve Timing Actuator Position Sensor: Description and Operation
Variable Valve Timing System
VVT system controls the intake valve timing to proper timing in response to driving condition. ECM controls Oil Control Valve (OCV) to make the
intake valve timing properly, and, oil pressure controlled with OCV is supplied to the VVT controller, and then, VVT controller changes relative
position between the camshaft and the crankshaft.