Crash Signalling

The Multiple Restraint System (MRS) control module provides a switched signal to the GM in the event of an accident. This signal was previously provided by the crash sensor located in the left front kick panel (< 9/96 MY).

Fig 1: Identifying Multiple Restraint System (MRS) Control Module

Courtesy of BMW OF NORTH AMERICA, INC.

The signal is an output function of the MRS control module and becomes active when MRS determines a crash has occurred. The GM unlocks the vehicle, switches on the interior lights and flashes the exterior lights when this signal is active.