Control Module
The supplemental restraint system module (SRS) handles functions for:
- seat belt tensioners
- side impact sensors
- frontal impact sensor
- seat position sensors
- adaptive seatbelt force limiter
- side impact protection (SIPS) bags
- front airbags
- door mounted inflatable curtains
- SRS indication
- passenger airbag indication
- collision output signal
- collision registration
- adaptive steering column.
- front seat belt buckles
- local CAN network, Supplemental restraint system module (SRS)
- occupant weight sensor (OWS).
- ROPS (Roll Over Protection System).
The control module is in the transmission tunnel, between the gear selector lever and the parking brake.
The supplemental restraint system module (SRS) communicates with directly connected wiring and with other control modules via the controller area network (CAN). Depending on the market, the control module can also communicate with components via a local CAN network.
The control module checks the input and output signals through an integrated diagnostic system. A diagnostic trouble code (DTC) is stored if the control module detects a fault.
Any diagnostic trouble codes (DTCs) are stored in the control module memory. The information can be read out.
The control module can process multiple collisions, frontal collisions, collisions from behind, side-on collisions and overturning.
The control module function can be easily checked by switching on the ignition. The SRS indicator lamp in the combined instrument panel must light up when the key is in ignition positions I-III. The lamp goes out after a short while if no faults are detected. This means that the supplemental restraint system (SRS) is functioning correctly.
For further information, see SIGNALS .