BEAN is a Toyota specific standard that operates in a daisy chain loop. It networks the body electric system and manages items like air conditioning and meter displays. This system is not as time critical as the CAN network and operates over a single voltage driven wire at 10kbps with 1-11 Bytes of data per transmission command.

Specification number 1 - download.

Communication with a Toyota Prius (Decoding of the CAN Protocol and Development of a Graphical Interface) - download.

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