Camshaft Position Sensor
WARNING: This page is about a different car, the 2002 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Camshaft Position (CMP) sensor is used for timing pulsing of fuel injectors. CMP sensor signal is also used by Powertrain Control Module (PCM) to determine firing of spark plugs. See CAMSHAFT POSITION SENSOR under EMISSIONS SYSTEMS & SUBSYSTEMS .