Vibe L4-1.8L VIN L (2003)
Air Bag: Description and Operation
Single Stage Inflator Modules
The inflator modules consist of an inflatable bag and an inflator. An inflator consists of a canister of gas-generating material and an initiating device. The
initiator is part of the deployment loop. When the vehicle is in a frontal crash of sufficient force, the SDM causes current to flow through the frontal air
bag deployment loops. When the vehicle is in a side impact crash of sufficient force, the SIS causes current to flow through the side impact air bag
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 are shorting bars located on the side impact module connectors, the seat belt pretensioner connectors, and the SDM connectors. The shorting bars
will short across the deployment loop circuits during the disconnection of the connector. The shorting of the circuitry will help prevent unwanted
deployment of the air bag or pretensioner when servicing the vehicle.