Diagnostic method for a sensor
AssigneeRobert Bosch GmbH
InventorsHeinrich Steinruecken, Klaus Walter, Rasmus Rettig, Klemens Gintner
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Abstract
In a method for diagnosis of a sensor in a motor vehicle having an internal combustion engine, during operation of the motor vehicle, an output signal of the sensor is monitored for whether a maximum value of the output signal undershoots a first threshold value and/or a minimum value of the output signal overshoots a second threshold value. In that case a signal is forwarded to a controller that signals to the controller that the sensor, upon restarting of the motor vehicle, might be furnishing incorrect data.
Claims12
A method for diagnosis of a sensor in a motor vehicle having an internal combustion engine, comprising the following steps:
- during operation of the motor vehicle, monitoring an output signal of the sensor for whether a maximum value of the output signal undershoots a first threshold value and/or a minimum value of the output signal overshoots a second threshold value;
- forwarding a signal to a controller that signals to the controller that the sensor, upon restarting of the motor vehicle, might be furnishing incorrect data if the maximum value of the output signal undershoots the first threshold value and/or the minimum value of the output signal overshoots the second threshold value;
- and wherein the undershooting or exceeding of the threshold value is used for diagnosis of the sensor.
Dependencies are inferred from the claim text.