| 摘要 |
The invention proposes a cooling system of a motor vehicle, in which a closure unit for the cooling air stream, in order to optimize the operating parameters of the internal combustion engine, is monitored as to its function. This closure unit, preferably a flap or louver for controlling the cooling air stream, is monitored as to its function in order to prevent a temperature buildup or a failure to reach the operating temperature. In order to monitor the position of the closure unit (1), the invention therefore proposes using a temperature sensor that is as a rule present, to compare the progression of the cooling water temperature to a stored model progression of the temperature. If the cooling water temperature lies within a predetermined tolerance range, then the closure unit is functioning properly. Otherwise, it is assumed that the closure unit is jammed.
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