Camshaft Position Sensor: Description and Operation

Camshaft Position Sensor:

PURPOSE
The Camshaft Position (CMPS) sensor is a basic component of the entire Electronic Concentrated Control System (ECCS). It monitors engine speed and piston position, and sends signals to the Engine Control Module (ECM) to control fuel injection, ignition timing and other functions.

Camshaft Position Sensor Rotor Plate:

OPERATION
The camshaft position sensor has a rotor plate and a waveforming circuit. The rotor plate has 360 slits for 1° signal and 6 slits for 120° signal. Light Emitting Diodes (LED) and photo diodes are built in the wave-forming circuit.