Volumetric Sensing

The BCU begins volumetric sensing 30 seconds after receipt of the superlock signal, the last door closes or convenience closing stops, whichever occurs last.

If the alarm has been triggered, the BCU will ignore further volumetric sensor signals for the duration of the alarm. The BCU resumes volumetric sensing 30 seconds after the alarm has stopped sounding.

Volumetric sensing and tilt sensing are disabled if the BCU receives a tail door open signal from the remote handset. The BCU resumes volumetric sensing and tilt sensing 30 seconds after the upper tail door closes again.