CAN-bus

CAN-Bus

The CAN-bus (Controller Area Network) is a serial bus system, in which all connected stations are equally entitled, i.e. each control module can both send as well as receive. In other words, the connected control modules can communicate and exchange information via the lines.

Due to the linear structure of the network, the bus system is fully available for all other stations in the event of one station failing. The connection consists of two data links (CAN-L and CAN-H) which are protected against interference by shielding (CAN-S).

Data exchange between the following control modules takes place via the CAN bus:
- DME control module
- Instrument cluster
- ASC/DSC control module
- Transmission control module (automatic transmission)

The connected control modules must all have the same CAN status. The CAN status can be checked via the diagnosis interface. The CAN status (bus index) is specified on the identification of the relevant control module connected to the CAN-bus.