Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Patent
1997-10-06
1999-11-30
Chin, Gary
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
701 63, 731181, 340449, G01M 1900, G06F 1900
Patent
active
059958871
ABSTRACT:
A method and apparatus are provided to determine a failure of an automatic transmission temperature sensor in an automobile. The apparatus detects a start-up of the vehicle. A sensor detects the transmission fluid temperature. The transmission fluid temperature at start-up is checked to see if the temperature is below a first predetermined temperature or above a second predetermined temperature. If the sensor does not detect a predetermined change in temperature during operation of the vehicle after it is determined the transmission fluid temperature at start-up is above the first predetermined or below the second predetermined temperature, the sensor has failed.
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Hathaway Richard Reynolds
Hoffman Earl Roslin
Palansky Bruce John
Wiethe Philip Joseph
Wozniak Kenneth Paul
Chin Gary
Dottavio James J.
Ford Global Technologies Inc.
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