Camshaft Position (CMP) Sensor

DESCRIPTION
The camshaft position sensor is located on the timing cover behind the water pump near the camshaft sprocket. As the camshaft sprocket turns, a magnet in it activates the Hall effect switch in the camshaft position sensor. When the Hall-effect switch is activated, it grounds the signal line to the Ignition Control Module (ICM), pulling the camshaft position sensor signal circuits applied voltage low. This is interpreted as a Camshaft Position (CMP) Sensor signal. The CMP Sensor signal is created as piston #1 is approximately 25 degrees after top dead center on the power stroke.