A method for testing and for determining the irrationality of a motor coolant temperature sensor in a vehicle

摘要

A method for testing a motor cooling means temperature sensor (foil - sensor) (112) in a vehicle (100) with a processor (102), the with the foil - sensor (112) and an intake air temperature sensor (alt - sensor) (116) communicates with the following steps:Receiving a foil - measuring data value of the foil - sensor (112) and an intake air temperature - measuring data value (alt - measuring data value) by the processor (102);Evaluating the temperature difference (δt) between the foil - measuring data value and the old - measuring data value, in order to determine whether irrationality is present, wherein said evaluating step the monitoring of the old - measuring data value during the operation of the vehicle (100) comprises, in order to the presence of a motor block heating can be seen, if the temperature difference (δt) exceeds a predetermined threshold value; andProviding an indication of the rationale in response to the evaluating step.