Electronic control apparatus for failure diagnosis

Details Electronic control apparatus for failure diagnosis Electronic control apparatus for failure diagnosis

1994-03-30

1996-12-10

Chin, Gary

Boots, shoes, and leggings

36442404, 307 101, 340438, B60R 1602, G05B 2300, H02J 1300

Patent

active

055837700

ABSTRACT:
An apparatus for driving an actuator loaded on an automotive vehicle in accordance with ON-OFF operation of an operation switch includes: an operation switch; an input circuit activated by operation of the operation switch for driving the actuator; an input detecting section for detecting whether the input circuit is in an activated or deactivated status; a storing section for storing the detected status of the input circuit; a comparing section for comparing a present status of the input circuit newly detected by the input detecting section with a previous status of the input circuit stored in the storing section; an informing section for providing external information indicative of a mismatch between the present status and the previous status of the input circuit on the basis of comparison results of the comparing section; and a stored status updating section for updating the previous status stored in the storing section on the basis of the newly detected present status after the present status and the previous status have been compared with each other. When the operation switch is operated to the ON-state, if the informing section does not provide external mismatch information the apparatus thus indicates that at least one of the operation switch and the input circuit is operating abnormally, while if the informing section does provide the external mismatch information, the apparatus is indicating that both the operation switch and the input circuit are operating normally.

REFERENCES:
patent: 4623974 (1986-11-01), Denz et al.
patent: 4887263 (1989-12-01), Steely
patent: 4924391 (1990-05-01), Hirano et al.
patent: 5187381 (1993-02-01), Iwasa et al.
patent: 5365438 (1994-11-01), Mitchell et al.
patent: 5406270 (1995-04-01), Van Lente

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