Crankshaft/ Camshaft Position Monitors

Crankshaft/ Camshaft position

Open and short-circuit detection of 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° CA (crank angle).

Crank request signal high input monitor - P1246
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 cam edge signal is input during cranking
- No cam 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°.