Camshaft Position (CMP) Sensor

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 activates the Hall effect switch in the camshaft position sensor. When the Hall-effect switch is activated, the switch grounds the signal line to the ICM, pulling the camshaft position sensor signal circuit's applied voltage low. This is interpreted as a CMP sensor signal. The CMP sensor signal is created as piston #1 is approximately 25 degrees after top dead center on the power stroke.