Camshaft Position (CMP) Sensor

Fig 1: Camshaft Position (CMP) Sensor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Intake CMP Sensor
2	Exhaust CMP Sensor

The camshaft position (CMP) sensors are located in the cylinder head cover near the number 4 cylinder. Each CMP sensor is a signal generator. The PCM relies on the information provided by the CMP sensor in order to perform the following:

To optimize the ignition timing
To optimize the fuel delivery
To monitor applicable CMP actuator solenoid valve operation