CAN Bus

The development of the CAN bus (controller area network) began in 1983 at Robert Bosch GmbH as a way to standardize communications between components. Prior to this, automotive ECUs (engine control units) each had their own proprietary systems, which required a lot of point-to-point wiring. In 1986, Bosch released the developed CAN protocol at the SAE Congress (Society of Automotive Engineers) ( ). In 1991, the CAN 2.0 protocol was published by Bosch and was adopted in 1993 as the international standard (ISO 11898). Since then, automobiles have used the protocol for communication and to reduce wiring harness sizes by use of the bus.