Circuit Description
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The inflatable restraint front end discriminating sensor is a crash sensing device used in the detection of a frontal collision. The front end discriminating sensor is used by the inflatable restraint sensing and diagnostic module (SDM) to help determine whether or not certain frontal crashes are severe enough to warrant deployment of the frontal air bags. The SDM applies voltage to the discriminating sensor - reference circuit and monitors the voltage at the discriminating sensor - signal circuit in order to verify proper circuit integrity. If the SDM detects a malfunction within the discriminating sensor circuit, a DTC will be set.