Diagnostic system for control apparatus of a motor vehicle

Details Diagnostic system for control apparatus of a motor vehicle Diagnostic system for control apparatus of a motor vehicle

1988-08-08

1990-05-15

Gruber, Felix D.

Boots, shoes, and leggings

731173, 340462, 36443101, G01M 1500, G01M 1700, G06F 1520

Patent

active

049263528

ABSTRACT:
A diagnostic system for control apparatus of a motor vehicle equipped with self-diagnostic functions in which the control apparatus are connected with each other by way of a diagnostic bus and a defect lamp line. Diagnostic functions can be initiated by way of a key or momentary switch in an initialization line of the diagnostic bus whereby the diagnostic results can be read out at a defect lamp connected to the defect lamp line by way of flashing code word. The defect output thereby takes place strictly sequentially, defect-by-defect and control apparatus by control apparatus. In order to be able to discontinue at any time a diagnostic analysis of the control apparatus and to be able to continue to the diagnostic analysis of the next control apparatus, a newly defined special signal emission is applied to the initialization line. By an association of a certain information content to certain places of the flashing code and by a new testing apparatus, the diagnostic analysis, the defect recognition and the coordination of the defects to predetermined control apparatus is considerably facilitated and improved.

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Gil Bassak, "Microelectronics Takes to the Road in a Big Way: A Special Report", pp. 113-122 (Electronics/Nov. 20, 1988).

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