Fig. 1.116. Block diagram of the side/rear collision airbag system
The side impact airbag system consists of two airbags: a side airbag and a curtain airbag. The airbags inflate simultaneously. The rear impact airbag system consists of only a curtain airbag.
In the event of a side impact, if the side airbag sensor registers an impact, it transmits a signal to the airbag sensor unit. The latter ensures simultaneous inflation of the side airbag and curtain airbag.
In the event of a rear impact, if the curtain airbag sensor detects an impact, it transmits a signal to the airbag sensor unit via the side airbag sensor. The airbag sensor unit inflates the curtain airbag.
Side airbag sensor and curtain airbag sensor
Fig. 1.117. Sensors of the airbag system in case of side/rear collision
Each side airbag sensor and curtain airbag sensor has a deceleration sensor. Depending on the vehicle's deceleration in a side or rear impact, the sensor is deformed and an electrical signal is generated (fig. 1.117).
Curtain airbag
The curtain airbags and side airbags deploy if the system detects a rear impact with the curtain airbag sensor.