ISO 14229-3 defines how data is chunked. When you look at a "PDF" of the standard, the diagrams for these four frames are the most referenced section.
It serves as the foundation for modern vehicle diagnostics, utilizing the transport protocol to allow diagnostic messages to be transmitted over CAN frames. 2. Key Components of UDSonCAN (ISO 14229-3) iso 142293 pdf
Since the exact standard "142293" does not exist, you need to identify the correct document. Here is the proper workflow: ISO 14229-3 defines how data is chunked
. This standard defines the implementation of diagnostic services for automotive electronic control units (ECUs) using the CAN bus protocol. Key Overview of ISO 14229-3 iso 142293 pdf
ISO 14229-3 provides the specific technical blueprint needed to transport those universal UDS requests and responses across a (covering both classical CAN and CAN FD). The OSI Model Placement
: Reference exact timing parameters and bit-level specifications to debug communication failures. Related Standards ISO 14229-1 : The base UDS standard (Application Layer).