Checking The Camshaft Control

When camshaft control is active, the control module checks that the camshaft moves to the intended position. If the position is not reached, the time the system takes to deploy to the correct camshaft position (the transition time from the actual to the desired camshaft angle) is measured. A diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the camshaft angle does not reach the desired value within a certain time frame.