Faults Discovered By Slave Nodes

Control modules that use LIN communication can have integrated diagnostics exactly as the control modules on CAN. However, it is the Master node to which the slave node is connected that stores the diagnostic trouble codes for faults that the slave node discovers.

Information about discovered faults in the slave nodes is sent in the messages to the master node.

Each slave node on a LIN bus can be seen as an extension of the master node's own connections. In most cases it is also the master node that makes evaluations whether the diagnostic trouble code (DTC) can be set or not.