For each PG, the document specifies the transmission rate, priority, and data length.

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: Ensuring ECUs from different manufacturers (e.g., engine vs. transmission) can communicate on a shared network. Vector Group

SAE J1939-71 is a protocol specification that defines the application layer and transport layer of the SAE J1939 protocol. This protocol is used for communication between ECUs in vehicle networks, enabling the exchange of data between devices such as engine control units, transmission control units, and other control modules.