Supplemental Restraint System Module (SRS) [2011-2018]: Design: Sensor-Can
Terminating resistor in Supplemental Restraint System Module (SRS) and Closing Velocity Module (CVM).
Occupant Weight Sensor (OWS), only USA/CAN.
A number of control modules communicate, in addition to via ordinary network (CAN-HS/CAN-MS), also via a separate local network, sensor-CAN, to exchange information (sensor data).
These control modules are:
- Supplemental Restraint System Module (SRS)
- Occupant Weight Sensor (OWS) (USA/CAN only)
- Forward Sensing Module (FSM)
- Closing Velocity Module (CVM)
- Brake Control Module (BCM)
Supplemental Restraint System Module (SRS) acts as main node for sensor-CAN-net. The speed on sensor-CAN is the same as for HS-CAN, 500 kbit/s.
All control modules on sensor-CAN, except Occupant Weight Sensor (OWS), are also connected to HS-CAN. All diagnosis and software downloads take place via HS-CAN.
The Occupant Weight Sensor (OWS) is diagnosed by the Supplemental Restraint System Module (SRS).
For more information on the CAN-net, see the appropriate service information: (Design and Function - CAN-net).
There are control modules on sensor-CAN that do not send any signals on the network and thus other control modules do not set any fault codes for "signal missing" for these control modules. There are also control modules on sensor-CAN that do not receive any signals on the network and thus control modules do not set any fault codes for "signal missing" for other control modules on sensor-CAN.