Trouble-diagnosable multifunction testing apparatus

Boots – shoes – and leggings

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36455101, 731173, G06F 1574

Patent

active

049243918

ABSTRACT:
A trouble-diagnosable multifunction testing apparatus is disclosed for use with a first half part of a collective connector provided in an automotive vehicle, the first half part of the collective connector including a plurality of signal lines connected respectively to a plurality of electronic control units disposed in the vehicle for transmitting a trouble-diagnosis output signal or various data signals obtained from each of the plurality of electronic control units, and a common switchable signal line connected with each of the plurality of electronic control units for transmitting an electric signal having a first or second logic level, the first half part of the collective connector being connected operatively with both of the signal lines, respectively. When a conventional test unit is connected to the first half connector part, the electronic control units transmit data signals to it at a first rate. When a special high-speed test unit is connected to the fist half connector part, it places a signal on the common switchable signal line which signal causes the electronic control units to transmit data at a rate which is higher than the first rate.

REFERENCES:
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patent: 4337515 (1982-06-01), Kreft
patent: 4476531 (1984-10-01), Marino et al.
patent: 4497057 (1985-01-01), Kato et al.
patent: 4602127 (1986-07-01), Neely et al.
patent: 4694408 (1987-09-01), Zaleski
patent: 4748566 (1988-05-01), Sasaki et al.
patent: 4757463 (1988-07-01), Ballou et al.
patent: 4796206 (1989-01-01), Boscove et al.
DE-Z.: Siemens Review, Jan. 1974, No. 1, pp. 14-19, "Electronic Diagnostic Testing of Vehicles for Volkswagen".
Japanese Patent Publication No. 32173/1986 (corresponds to above-noted U.S. Application).

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