Test circuit for automatic transmission
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United States of America Patent
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-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Mar 9, 1990
filing date -
Mar 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A test circuit for computer-controlled automatic transmissions which includes a gear selection rotary switch providing enabling inputs to logic circuitry that controls a plurality of electronic switches to energize selected transmission control relays. The control relays then apply operating current to selected combinations of transmission valves to effect transmission operation. The test circuit also provides light indication of hydraulic pressure conditions in the various valve circuits, and push button switches for testing the condition of relays and solenoids.
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