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Home >> Saturn >> 2001 >> LW200 L4-2.2L VIN F >> Repair and Diagnosis >> Restraints and Safety Systems >> Air Bag Systems >> Description and Operation >> SIR System Component Description and Definitions >> Side Impact Sensor (SIS)
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Side Impact Sensor (SIS)

The SIS is a crash-sensing device used to detect side impact collisions. An SIS is located in the left and right B-pillars. The SIS connects to the SIR wiring harness using a 2-way connector. The SIS receives power from the SDM when the ignition is On. The SIS is used to perform the following functions:
^ Side Impact Crash Detection: The SIS monitors vehicle velocity changes to detect side impact crashes that are severe enough to warrant deployment.
^ Side Air Bag System Status Communication: The SDM monitors the SIS through two interface circuits. The SIS can communicate the status of the side impact air bag system to the SDM.
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