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US 5,670,939 AGranted
Method for evaluation of the self-diagnosis of a controller in a motor vehicle
AssigneeMercedes-Benz AG
InventorsAndreas Rodewald, Wolfgang Straub
Life of this patent
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AssigneeMercedes-Benz AG
InventorsAndreas Rodewald, Wolfgang Straub
Estimating the term…
The invention provides a method for evaluating the self-diagnostic system of a controller in a motor vehicle having a control panel with a push-button switch with automatic return, and additional input elements and having a signalling element which is suitable for emitting a flashing code. In order to emit a structured flashing code of fault numbers, the range of possible faults which can be diagnosed is divided into fault classes, the faults within a fault class being assigned fault numbers which can be emitted, separated on the basis of fault classes, by flashing code. A specific fault class is selected by the operator by setting the input elements to a specific position combination which is assigned to the fault class, and operation of the push-button switch (for example, the recirculation push-button in the case of a heating controller).
Method for evaluating operability of a self-diagnostic system of a control unit in a motor vehicle, said control unit having a control panel with a push-button switch with automatic return, further positionable input elements, and a signal element for emitting a flashing code, said method comprising the steps of:
Apparatus for evaluating operability of a self-diagnostic system of a vehicle heating control unit having a control panel with a push-button switch with automatic return for selecting an air recirculation mode, first and second temperature selection wheels, each having a MIN position and a MAX position, and a recirculation indicating lamp for emitting flashing code signals, said apparatus comprising:
Dependencies are inferred from the claim text.