Method for evaluation of the self-diagnosis of a controller in a motor vehicle

US5670939A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Andreas Rodewald · Herrenberg, DE
• Wolfgang Straub · Deggingen, DE

Key dates

• Filing date: May 24, 1995
• Grant date: Sep 23, 1997
• Expiry date: May 24, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/90
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention provides a method for evaluating the self-diagnostic system of a controller in a motor vehicle having a control panel with a push-button switch with automatic return, and additional input elements and having a signalling element which is suitable for emitting a flashing code. In order to emit a structured flashing code of fault numbers, the range of possible faults which can be diagnosed is divided into fault classes, the faults within a fault class being assigned fault numbers which can be emitted, separated on the basis of fault classes, by flashing code. A specific fault class is selected by the operator by setting the input elements to a specific position combination which is assigned to the fault class, and operation of the push-button switch (for example, the recirculation push-button in the case of a heating controller).