Diagnostic system for use in motor vehicle uses electronic control device to pick up signals and to transmit diagnostic signals in order to carry out diagnosis calculations

摘要

An electronic control device picks up signals and transmits diagnostic signals in order to carry out a diagnosis. A vehicle is operated with a range of restricted driving functions. In normal operations an electronic control device controls preset functions for preset components in a motor vehicle. An electronic test device makes signal contact with an electronic control device that is inside the vehicle for diagnostic purposes but is not a vehicle component.