Addressing of Control Units for Diagnosis Purposes
Publication Date: 2004-Apr-07
The IP.com Prior Art Database
In order to both fulfill the legal regulations regarding the communication between a vehicle and an external test equipment for emissions-related diagnostics and to enable a consistent means of diagnosing various kinds of ECU:s in a vehicle, also if these units are attached to a sub-network, fixed normal addressing format is used to identify all units, which belong to a network in the vehicle that is delivered and/or assembled by a particular supplier/manufacturer. Mixed addressing format is used to identify units that are provided and installed by other suppliers/manufacturers. Thereby, the primary manufacturer may address all its internal control units in accordance with the relevant standards. At the same time, the primary manufacturer is provided with a standardized addressing interface towards any external control units.