The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 1996
Filed:
Nov. 06, 1995
Satoshi Ishii, Toyota, JP;
Takao Akatsuka, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
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.