Diagnosis system for a motor vehicle
US5005129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for diagnosing a motor vehicle has a diagnosis device including a computer having a central processing unit and a ROM. The ROM stores a plurality of programs for diagnosing an electronic control system for controlling an engine. The electronic control system has a self-diagnosis function and a nonvolatile memory for storing trouble data as a result of the self-dignosis. A communication system is provided in the diagnosis device for supplying a trouble check signal to the electronic control system. In response to the trouble check signal, the electronic control system derives the trouble data from the nonvolatile memory and sends the trouble data to the diagnosis device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.