The forward sensors are located in various locations forward of the passenger compartment. Some are located inside the fenders, some are on the cowl, some are attached to the support in front of the radiator Rear sensors are also known as safing sensors as their function is to determine that a crash has occurred Rear safing sensors are located in various locations in the passenger compartment depending on the manufacturer. Some are integrated with the control/diagnostic module The rear safing sensor must close before the forward sensors to avoid airbag deployment in cases where the impact is not severe enough to cause deployment [1]. When the vehicle is parked with the ignition off deployment is very unlikely because there is no power to the circuits for deployment The two front impact sensors provide verification of the direction and severity of the impact The impact sensors are threshold impact provides a sufficient inertia force to close the switch sensitive switches that complete an electrical circuit when arThe forward sensors are located in various locations forward of the passenger compartment. Some are located inside the fenders, some are on the cowl, some are attached to the support in front of the radiator. Rear sensors are also known as safing sensors as their function is to determine that a crash has occurred. Rear safing sensors are located in various locations in the passenger compartment depending on the manufacturer. Some are integrated with the control/diagnostic module. The rear safing sensor must close before the forward sensors to avoid airbag deployment in cases where the impact is not severe enough to cause deployment [1]. When the vehicle is parked with the ignition off deployment is very unlikely because there is no power to the circuits for deployment. The two front impact sensors provide verification of the direction and severity of the impact. The impact sensors are threshold sensitive switches that complete an electrical circuit when an impact provides a sufficient inertia force to close the switch