Camshaft Position Sensor: Description and Operation

Cam Angle Sensor:

PURPOSE
The cam angle sensor generates a frequency signal used by the ECM to determine piston location.

Sensor Interpretation:

OPERATION
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 crank angle sensor #2. By combining the signals, all cylinders can be identified.