SAE J1939-13 specifies the diagnostic connectors used for off-board connection to a vehicle’s SAE J1939 communication links. The defined diagnostic connectors support connection to the twisted shielded pair media (SAE J1939-11), the unshielded twisted pair (SAE J1939-15), the twisted pair of (SAE J1939-14), as well as the twisted unshielded quad media (ISO 11783-2).
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This revision adds reference to SAE J1939-16 baud rate detection when a diagnostic tool is designed to support either 250 kbps or 500 kbps vehicle networks. KbKb