Impact Sensor: Description and Operation

The presence of an Inflatable Restraint Front End Discriminating Sensor enhances the SIR system performance. Use of the Inflatable Restraint Front End Discriminating Sensor provides timely deployment of the air bags during some crashes. This is a mechanical sensor that is not part of the deployment loop but instead, only provides an input signal to the Inflatable Restraint Sensing and Diagnostic Module (SDM).