K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Camshaft Position Sensor: Description and Operation
Circuit Description
Camshaft Position (CMP) Sensor
Camshaft Position Sensor
The Camshaft Position (CMP) sensor is located within the distributor. The operation of the CMP sensor is very similar to the crankshaft position (CKP)
sensor.
The CMP sensor will provide one pulse per camshaft revolution (1X signal). The loss of this signal may not affect the driveability of the vehicle, but will
affect the type of control the VCM has on the fuel injection system. If this signal is lost the VCM will pulse the injectors bank to bank instead of each
individual injector at a time. The VCM also utilizes this signal in conjunction with the crankshaft position in order to determine which cylinder(s) are
misfiring.
