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ISO 11992 (''Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles'') is a CAN-based vehicle bus standard by the
International Organization for Standardization The International Organization for Standardization (ISO ; ; ) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries. M ...
. It is used for communication between the tractor and one or more trailers. The protocol structure is similar to SAE J1939. The main differences are timing, bus voltage level, and the structure of the message's 29-bit identifier.


External links


Official texts


ISO 11992-1:2019 - Part 1: Physical and data-link layers


* ttps://www.iso.org/standard/77009.html ISO 11992-3:2021 - Part 3: Application layer for equipment other than brakes and running gear
ISO 11992-4:2023 Part 4: Diagnostic communication
#11992 Computer buses {{automotive-tech-stub