Inflator Modules

The inflator modules consist of an inflatable bag and an inflator (a canister of gas-generating material and an initiating device). When the vehicle is in a frontal crash of sufficient force to close the Dual Pole Arming Sensor and, at least, one of the Discriminating Sensors simultaneously, current flows through the Deployment Loops. Current passing through the initiator ignites the material in the Inflator Module. The gas produced from this reaction rapidly inflates the air bag.

There is a shorting bar on the Driver Inflator Module side of the Upper Steering Column Connector which connects the SIR Coil to the Driver Inflator Module. The shorting bar shorts across the Driver Inflator Module circuits when the Upper Steering Column Connector is disconnected. The circuit to the Driver Inflator Module is shorted in this way to help prevent unwanted deployment of the air bag when servicing the Driver Inflator Module, the Steering Column or other SIR system components.

There is a shorting bar on the Passenger Inflator Module Connector. The shorting bar shorts across the Passenger Inflator Module Circuit when disconnected. The circuit to the Passenger Inflator Module is shorted in this way to help prevent unwanted deployment of the air bag when servicing the Passenger Inflator Module the Instrument Panel or other SIR system components.