Crankshaft Position Sensor: Description and Operation

Crankshaft Position (CKP) Sensor:

The Crankshaft Position (CKP) sensor provides the VCM with the crankshaft speed and the crankshaft position. The VCM utilizes this information in order to determine if an engine misfire is present.

The VCM monitors the CKP sensor for a momentary drop in the crankshaft speed in order to determine if a misfire is occurring. When the VCM detects a misfire, a DTC P0300 will set.

The VCM also monitors the CKP sensor signal circuit for malfunctions. The VCM monitors CKP signal and the high and low resolution signals. The VCM calculates these signals in order to determine a ratio. When the VCM detects that the ratio is out of normal operating range, the VCM will set a DTC P0337 or a DTC P0338.