Supplemental Restraint System (SRS) Deployment Logic - GF91.60-P-0002-08PM
In case of an accident the restraint systems control unit (N2/7) decides which airbag and ETR units to trigger, depending on the severity of the accident. In doing so it considers the following input variables:
- Sidebag and windowbag sensor, left (A53/1)
- Sidebag and windowbag sensor, right (A54/1)
- Driver seat belt buckle restraint systems switch (S68/3)
- Front passenger seat belt buckle restraint systems switch (S68/4)
- Occupancy recognition of the front passenger seat via the front passenger seat occupied and child seat recognition sensor (B48)
Emergency opening of the central locking (CL) system
A crash sensor is integrated in rear SAM control unit with fuse and relay module (N10/2) If the vehicle accelerates > 60 m/sec. 2 the Controller Area Network Bus Class B (interior) (CAN-B) transmits the emergency opening signal to the respective door control units after a delay of 8 to 11 seconds.
The signal is transmitted to the following control units:
- Left front door control module (N69/1)
- Right front door control module (N69/2)
- Left rear door control unit (N69/3) (except model 203.7)
- Right rear door control unit (N69/4) (except model 203.7)
Flashing alarm
In the event of a crash, the hazard warning system is switched on automatically. In order to do this the restraint systems control unit (N2/7) transmits the crash signal via CAN-B to the rear SAM control unit with fuse and relay module (N10/2), which acts as a central turn signal controller. The hazard warning system can be switched off at any time using the hazard warning system switch (N72/1s5).
As a function check is not possible for the supplemental restraint system (SRS), we will refrain here from providing a description of the individual triggering strategies. Beyond this, the triggering strategies are also subject to modifications, such as, e.g. those which result from new knowledge gained in the area of accident research.