Low coolant temperature fault diagnostic systems and methods
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United States of America Patent
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Aug 11, 2015
Grant Date -
Jan 16, 2014
app pub date -
Sep 7, 2012
filing date -
Jul 13, 2012
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Abstract
A diagnostic system for a vehicle includes a comparison module, a disabling module, and a fault indication module. The comparison module indicates whether a temperature of engine coolant is less than a first predetermined temperature. The disabling module disables the comparison module until the temperature of the engine coolant is greater than a second predetermined temperature. The fault indication module diagnoses a fault in response to the comparison module indicating that the temperature of the engine coolant is less than the first predetermined temperature.
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