Electric coolant pump diagnostic systems and methods
A pump current module determines a first current flowing through an electric engine coolant pump based on a coolant valve position. A current error module receives a second current flowing through the electric engine coolant pump measured using a current sensor and determines a current error based on a difference between the first current and the second current. A fault module indicates whether a fault is present based on the current error.
GM Global Technology Operations LLC
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Yue-Ming Vijay Eugene V.
Chen Ramappan Gonze