Fault diagnosis support device

A device for detecting a fault in one or more system(s) of an automobile, the device comprising:

• a plurality of sensors that measure parameters of the one or more system(s) of the automobile;
• and
• a memory that stores a plurality of diagnostic models in which an available range and a reference point available for diagnosis are defined for a feature value used for diagnosis of the one or more system(s) of the automobile;
• wherein the device is configured to:
• determine an environmental condition based in part on the parameters of the one or more system of automobile measured, wherein the environmental condition indicates a condition of roadway where the automobile is being operated;
• determine a driver model based on environmental condition, wherein the driver model includes a representative point of the feature value for one or more systems of the automobile under the environmental condition;
• select a particular diagnostic model from among the plurality of the diagnostic models based on the driver model;
• generate a recommendation model based on the particular diagnostic model and the environmental condition, and
• detect the fault in the one or more system of the automobile by comparing the recommendation model to the parameters of the one or more system of the automobile.