Iso 142293 | Pdf

Without Part 3, UDS services (Part 1) cannot physically fit onto a standard CAN bus network.

(DoCAN), which handles segmented data transfer for messages longer than the standard 8-byte CAN frame. iso 142293 pdf

ISO 14229 is a communication-agnostic diagnostic protocol defined for road vehicles. Unlike earlier standards tied to specific physical layers, such as ISO 14230 (KWP2000) or SAE J1850, UDS operates independently of the underlying bus system. It can be implemented over Controller Area Network (CAN), Ethernet, FlexRay, or LIN. This flexibility allows manufacturers to adopt modern high-speed networks while retaining a uniform diagnostic command set. The standard defines a client-server model where an external test tool (client) communicates with one or more ECUs (servers) using diagnostic requests and responses. Without Part 3, UDS services (Part 1) cannot

: The standard outlines additional requirements or restrictions that only apply when UDS is used over CAN, rather than Ethernet or FlexRay. Unlike earlier standards tied to specific physical layers,