This part of ISO 15765 gives an overview of the structure and the partitioning of ISO 15765, and shows the relationships between the different parts. It also defnes the diagnostic network architecture. The terminology defned in this part of ISO 15765 is common for all diagnostic networks and is used throughout all parts of ISO 15765. The diagnostic communication over controller area network (DoCAN) protocol supports the standardized service primitive interface as specifed in ISO 14229-2.