Tracker 4WD L4-2.0L VIN C (1999)
Camshaft Position Sensor: Description and Operation
Camshaft Position (CMP) Sensor
The Camshaft Position (CMP) Sensor
The Camshaft Position (CMP) sensor (1) is located in a distributor style housing (2) on the back of engine head (3). The PCM uses the CMP sensor
input in order to control the fuel injectors and the ignition timing. The CMP sensor is adjustable.
Operation
Operation
The CMP sensor (3) contains a signal generator (hall switch) (2). A signal rotor (2), with 11 notches, is located in the CMP sensor housing and is
driven by the camshaft. The CMP sensor has a specified air gap between the sensor core end and the signal rotor. When the signal rotor in the housing
turns, a magnetic flux from the magnet is applied to the hall element repeatedly. The hall element generates a voltage that is proportional to the
magnetic flux. This voltage signal is wave-shaped and is modified into a digital pulse before being sent to the PCM. The PCM uses the pulse and/or
revolution signal in determining the engine speed and the position of each cylinder.
