Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Todd J. Thor0
Date of Patent
September 22, 2009
0Patent Application Number
116719790
Date Filed
February 6, 2007
0Patent Primary Examiner
Patent abstract
A method of regulating operation of an automatic transmission includes identifying a tie-up condition of the automatic transmission, adjusting a pressure of a transmission element in response to the tie-up condition and determining whether a first gear ratio of the automatic transmission holds. The pressure is set to zero if the gear ratio does not hold and a faulty transmission element is identified as one associated with a second gear ratio that is lower than said first gear ratio.
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