The local CAN bus (Controller Area Network) is a serial bus system, in which all connected stations have equal rights. Each control unit can both transmit as well as receive. In other words, the connected control units can ”communicate” and exchange information via the bus interface.
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 lines.
The local CAN bus exists independently of the familiar CAN bus. The local CAN bus serves only engine functions.
The connected control units 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 unit connected to the CAN bus.