Side SIR System Description

The side impact SIR system consists of the following components:
^ Inflatable restraint Sensing And Diagnostic Module (SDM)
^ Inflatable restraint side impact modules - LF
^ inflatable restraint Side Impact Sensors (SIS) - LH
^ AIR BAG indicator in the Instrument Panel Cluster (IPC)

The side impact modules are located in the outside portion for the front seat backs. The side impact modules contain a housing, inflatable air bag, initiating device, and a canister of gas generating material. The initiator is part of the side impact module deployment loop. When a side impact of sufficient force occurs, the SIS detects the impact and sends a signal to the SDM. The SDM compares the signal received from the SIS to a value stored in memory. When the generated signal exceeds the stored value, the SDM will cause current to flow through the side deployment loop, deploying the inflator module. The SDM, side impact modules and the connecting wires make up the side deployment loops. The SDM continuously monitors the side deployment loops for malfunctions and commands the IPC to turn the AIR BAG indicator ON if a fault is present.