Diagnostic system for a motor vehicle

US4748843A · kind A · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Peter Schafer · Pfungstadt, DE
• Dieter Marx · Gatineau, CA
• Roland Ehniss · Karlsruhe, DE
• Roland Ebner · Eberdingen, DE

Key dates

• Filing date: Oct 23, 1986
• Grant date: Jun 7, 1988
• Expiry date: Oct 23, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C5/0808
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A diagnostic system including a display system in a combination instrument of the motor vehicle and a testing unit connected by a stimulating line (L) and a communication line (K) serial bus system to control systems for selectively reading defect reports from the defined storage areas of the control systems and displaying them on the display system. A diagnostic system is started by plugging a diagnostic plug or an external testing unit into a plug device connected with the testing unit or the bus system.