Camshaft Position Sensor: Description and Operation

The camshaft position sensor is located on the left-hand camshaft support to detect the combustion cylinder at any one moment.
It is designed so that the ECM accurately reads the number of pulses which occur when protrusions provided on the back of the left hand camshaft-drive sprocket cross the sensor. Internal construction and the basic operating principle of the camshaft position sensor are similar to those of the crankshaft position sensor. A total of seven protrusions (one each at two locations, two at one location and three at one location) are arranged in four equal parts of the sprocket, as shown.