Circuit Description

CMP sensor is a pick-up coil mounted in outer corner of cylinder head, just below valve cover. A 3-tooth signal plate is mounted to camshaft sprocket. DTC is set when either no cranking or engine running signal is received by ECM from CMP sensor. Possible causes are:

• CMP sensor circuit is open or shorted.
• Defective CMP sensor.
• Defective signal plate.
• Defective ECM.