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Home >> Jaguar >> 2008 >> XK8 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> On Board Diagnostics >> Onboard Monitoring >> 4.23 Engine Starting >> 4.23.1 Crank request Signal

4.23.1 Crank request Signal

The crank request signal is continually monitored for the presence of a signal whilst the vehicle is in motion. Vehicle motion is confirmed by checking vehicle speed, engine speed and engine load. If the crank request signal is detected for longer than the defined time a failure is registered. The crank request signal is also monitored to confirm the signal is available when a crank request is required.