CTS V6-3.2L VIN N (2003)
Seat Belt Tensioner: Description and Operation
INFLATABLE RESTRAINT SEAT BELT PRETENSIONER
The seat belt pretensioner modules contain a housing, an initiating device, canister of gas generating material. The initiator is part of the seat belt
pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the SDM will cause current to flow through the
deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas and the
release of compressed gas, if present. The gas produced from this reaction rapidly shortens the seat belt buckle height.
Each seat belt pretensioner is equipped with a shorting bar located on the connector of the pretensioner. The shorting bar shorts the seat belt
pretensioner deployment loop circuitry to prevent unwanted deployment of the pretensioner when servicing the seat belt pretensioner.
