Air Bag Systems: Description and Operation

Airbag Sensors

Function
Owing to the differences in crash test requirements for ECE and US vehicles, the ACSM sensor systems for the two versions also differ. The sensors detect and confirm front, side and rear impacts. Signals from the sensors are transmitted directly to the ACSM Crash Safety Module for processing.
The Crash Safety Module then determines the direction and intensity of the impact based on the data relayed by the sensors. The thresholds must be exceeded at two separate sensors before a crash is recognized.

NOTE: All work on the airbag must only be conducted with the battery disconnected. Connect and disconnect airbag control unit, sensors and gas generators only with the battery disconnected. The airbag control unit contains vehicle-specific data and must therefore be encoded before start-up. Removal and installation in other vehicles is prohibited.