Grand Marquis V8-4.6L VIN V Flex Fuel (2006)
Camshaft Position Sensor: Description and Operation
CAMSHAFT POSITION (CMP) SENSOR
Typical Synchronizer Hall-Effect CMP Sensor
Typical Variable Reluctance CMP Sensor
The CMP sensor detects the position of the camshaft. The CMP sensor identifies when piston No. 1 is on its compression stroke. A signal is then sent to
the PCM and used for synchronizing the sequential firing of the fuel injectors. Coil-on-plug (COP) ignition applications use the CMP signal to select the
correct ignition coil to fire.
Vehicles with 2 CMP sensors are equipped with variable camshaft timing (VCT). They use the second sensor to identify the position of the camshaft on
bank 2 as an input to the PCM.
There are 2 types of CMP sensors: the 3-pin connector Hall-effect type sensor and the 2-pin connector variable reluctance type sensor.
