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:
May. 23, 2000
Filed:
Dec. 09, 1998
Minoru Hozuka, Okazaki, JP;
Atsushi Ohtake, Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
In a diagnostic method and apparatus for a vehicle, a transponder for performing a communication with an external receiver and an engine ECU are connected on a communication line. During a first inappropriate period in which noises are supposed to occur on the communication line due to engine starting or a second inappropriate period in which a processing load necessary for a control is supposed to be high when the engine speed is high or a load is high, even if there is a request for outputting abnormality information from the transponder, the engine ECU does not respond to the request. On the other hand, when it is not during the first and second inappropriate periods, the ECU responds to the output request from the transponder.