Supplemental Restraint Systems

How Airbag Systems Work To prevent airbag deployment in small accidents, the ACM can not deploy an airbag from one signal. The ACM must receive two or more impulses to deploy an airbag. This second impulse comes from the safety or arming sensor. This sensor is usually mounted inside the vehicle and must experience a sudden deceleration like the crash sensor. Closing of the safety or arming sensor provides power to the inflator module via the ACM. The ground is provided through the activation of a crash/impact sensor via the ACM. Hence the above statement, two sensors are required to active an airbag deployment sequence.