General Description (A/T)

The camshaft position (CMP) sensor consists of a rotor and a semiconductor that detects rotor position. When the rotor turns after starting the engine, the changes of magnetic flux in the semiconductor are converted into pulsing signals to the engine control module (ECM)/powertrain control module (PCM). The CMP sensor detects the top dead center position of each cylinder for fuel injection timing.

If CMP sensor pulsing signals are detected an abnormal number of times due to noise, a malfunction is detected and a DTC is stored.