CAMSHAFT POSITION (CMP) SENSOR CONSTRUCTION/OPERATION [MZI-3.7]

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• The CMP sensor identifies when piston No.1 is on its compression stroke.
• A signal is then sent to the PCM and used for synchronizing the sequential firing of the fuel injectors.
• Coil-on-plug ignition applications use the CMP signal to select the correct ignition coil to fire.
• Vehicles with 2 CMP sensors are equipped with variable camshaft timing.
• The CMP sensors use the second sensor to identify the position of the camshaft (LH) as an input to the PCM.

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