Diagnosis

DTC P1651 should set if a problem occurs which affects the low speed fans control circuit. If the problem affects the high speed fans control circuit, DTC P1652 should set. A problem with the ECT sensor should set DTC P0117, P0118, P1114, or P1115. Any of these DTCs will affect cooling fan operation. Therefore, diagnose any ECT DTCs before using the Electric Cooling Fan Diagnosis table. If no DTCs set and a cooling fan problem exists, use the Electric Cooling Fan Diagnosis to diagnose the PCM controlled cooling fans.