Century V6-3.1L VIN J (2005)
Impact Sensor: Description and Operation
INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS)
The side impact sensors (SIS) contains a sensing device (accelerometer) which monitors vehicle acceleration and velocity changes to detect side
collisions that are severe enough to warrant side inflator module deployment. The SIS is not part of the deployment loop, but instead provides an input to
the SDM. The SDM contains a microprocessor that performs calculations using the measured accelerations and compares these calculations to a value
stored in memory. When the generated calculations exceed the stored value, the SDM will cause current to flow through the deployment loops,
deploying the side inflator module(s).
