Diagnosis apparatus for vehicle control system

Details Diagnosis apparatus for vehicle control system Diagnosis apparatus for vehicle control system

1995-11-06

1996-09-10

Chilcot, Richard

Measuring and testing

Test stand

For engine

731173, G01M 1500, G01M 1700, B60R 1602, F02D 4500

Patent

active

055534880

ABSTRACT:
A diagnosing apparatus for use in a vehicle is disclosed. A microcomputer operates according to either a first mode or a second mode. The second mode being used for the diagnosis requiring a higher precision than the diagnosis according to the first mode. A first program for detecting the malfunction of a control system and a second program having a higher detection precision than the first program is stored in a memory. The operation mode of the microcomputer is selected in accordance with an extent of the malfunction. The diagnosis according to the first program and the second program are executed when the first mode and the second mode are selected, respectively. An operation status of the control system is detected by sensors the diagnosis is performed in the second mode. The diagnosis mode is forcibly returned to the first mode from the second mode when the status detected by the detecting means matches with a predetermined conditions.

REFERENCES:
patent: 4739482 (1988-04-01), Wrigge
patent: 4884054 (1989-11-01), Moon, Sr.
patent: 5056023 (1991-10-01), Abe
patent: 5111686 (1992-05-01), Kamiya et al.
patent: 5216915 (1993-06-01), Sakamoto
patent: 5287737 (1994-02-01), Osawa et al.
patent: 5334938 (1994-08-01), Kugler et al.
patent: 5357787 (1994-10-01), Kuroda et al.
patent: 5357790 (1994-10-01), Hosoya

Affiliated with

Also associated with

Rating

Diagnosis apparatus for vehicle control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diagnosis apparatus for vehicle control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnosis apparatus for vehicle control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1312047