Camshaft Position Sensor: Description and Operation

Cam Angle Sensor:

Cam Angle Sensor Output Signal:

PURPOSE/OPERATION
The camshaft position sensor generates a frequency signal used by the ECM to determine piston location. The sensor generates a signal pulse whenever the engine is rotating. As a tooth on the camshaft pulley passes behind the sensing head, a small electrical pulse is generated. The signal is returned to the ECM and combined with the signal from the crank angle sensor. By combining the signals, all cylinders can be identified.