Camshaft Position (CMP) Sensor

The CMP sensor is located inside distributor. This Hall Effect type sensor works in conjunction with Crankshaft Position (CKP) sensor, providing PCM with inputs necessary to establish and maintain proper fuel injector firing order.

When leading edge of pulse ring enters the sync signal generator on the camshaft position sensor, the resulting change in the magnetic field causes a 5-volt reference signal to be induced. When trailing edge of pulse ring leaves the sync signal generator on the CMP sensor, the resulting collapse of the magnetic field causes reference signal to drop to zero volts.