System for fault diagnosis and / or fault prognosis in motor vehicles

摘要

The diagnostic system according to the invention for anomaly detection and / or error prognosis in motor vehicles, which classifies both known errors and unknown errors on the basis of behavior vectors, is equipped with an internal vehicle diagnostic unit (on-board unit) and / or with a Vehicle-external diagnostic unit (off-board unit) equipped. According to the invention, at least one of the two diagnostic units contains a first database in which behavior vectors known for known operating modes are stored. Furthermore, at least one of the two diagnostic units contains a diagnostic control unit with an evaluation algorithm for anomaly detection and / or for error prognosis, which has a vector similarity test for comparing determined behavior vectors with known behavior vectors in the database in order to identify unknown behavior vectors identify.