Crankshaft Position Sensor: Description and Operation

Crankshaft/Camshaft Position Sensor

Open and Short Circuit Detection of the Crank Signal
Checks are performed to see if normal crank edge signals are detected during cranking.

Intermittent Crank Failure Detection
The number of crank teeth is checked every 360 degree of crank angle (1revolution).

Crank Request Signal High Input Monitor
If the crank request input is high when then the engine is running and the vehicle is moving, a high failure is flagged.

Open/Short Circuit
For open and short circuit detection, the monitor looks for:
- No CMP edge signal is input during cranking.
- No CMP edge signal is input during normal running.

Missing Phase Detection
For missing phase detection, the cylinder identification flag does not turn on or off every 360 degree.