Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Reexamination Certificate
2011-08-02
2011-08-02
Black, Thomas G (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
C701S034000, C073S114340
Reexamination Certificate
active
07991524
ABSTRACT:
A temperature sensor diagnostic system for a vehicle comprises a deviation calculation module, a limits determination module, and a fault diagnostic module. The deviation calculation module calculates a deviation coefficient based on a time constant of a temperature sensor and a period between first and second temperatures measured by the temperature sensor, wherein the second temperature is measured after the first temperature. The limits determination module determines upper and lower temperature limits based on the first temperature and the deviation coefficient. The fault diagnostic module selectively diagnoses a fault in the temperature sensor when the second temperature is one of greater than the upper temperature limit and less than the lower temperature limit.
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Black Thomas G
Coleman Marthe Marc
GM Global Technology Operations LLC
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