Method, system, and computer program product for performing on-board diagnostic functions in a vehicle

Abstract

The invention relates to a method for executing an on-board diagnosis function in a motor vehicle, comprising at least one drive system, at least one operating element and at least one controller having a processor, a control module and an on-board diagnosis function module. The method comprises the following method steps: - activating the on-board diagnosis function in the on-board diagnosis function module; - supplying a first signal curve of an operating value of the operating element to an analysis module; - analyzing the first signal curve of the operating value by the analysis module; - activating a filter module in the case of a positive analysis result; or - deactivating the filter module and the on-board diagnosis function and forwarding the first signal curve of the operating value to the control module in the case of a negative analysis result; - filtering the first signal curve of the operating value by the filter module with a selected damping parameter in the case of activation of the filter module to obtain a filtered second signal curve of the operating element.

Description

TECHNICAL FIELD

[0001] The present invention relates to a method, a system and a computer program product for performing on-board diagnostic functions in a motor vehicle. BACKGROUND

[0002] On-board diagnostic functions (OBD) are used in motor vehicles to monitor the functioning of the motor vehicle and in particular of the drive system. In motor vehicles having a combustion engine, in particular the combustion engine and / or other systems influencing the exhaust gas are monitored during operation of the motor vehicle. A plurality of fault states can be identified and displayed here.

[0003] However, some on-board diagnostic functions can only be carried out in driving situations in which the dynamics of the engine speed and / or of the air mass flow are small, since, for example, a constant combustion engine operating point is required in the combustion engine. As a result, in conventional motor vehicles, a diagnostic interruption often occurs when the driver switches to a dynamic operating mode. This in particular relates to parallel analyses and diagnoses of various technical parameters and devices, such as catalytic converter diagnosis, cylinder equalization diagnosis of a multi-cylinder engine, or filter tank purge valve diagnosis. As a result, dynamic driving modes can lead to the on-board diagnostic functions being carried out too infrequently or to unreliable results being provided. In addition, an increased number of diagnostic attempts leads to an influence on the exhaust gas values and the fresh air supply.

[0004] DE 10 2012 222 408 A1 discloses a diagnostic method for an oxygen sensor in a hybrid vehicle, wherein the combustion engine is operated at a defined engine speed when the oxygen diagnostic function is carried out.

[0005] DE 10 2011 109 084 A1 discloses a method for identifying ignition failures of a combustion engine by means of an on-board diagnostic system, wherein, in order to determine the ignition failures less disturbed, a short gas pulse of the combustion engine is provided at a predefined rotational speed of the combustion engine during a coasting operating state of the motor vehicle, despite slight ignition of the combustion engine. SUMMARY

[0006] It is therefore an object of the present invention to provide a method, a system and a computer program product for performing on-board diagnostic functions in a motor vehicle, which is distinguished by high operating stability and reliable diagnostic results.

[0007] According to the application, this object is achieved in method terms by the features of a method for carrying out an on-board diagnosis function in a motor vehicle according to the following first aspect, in system terms by the features of a system for carrying out an on-board diagnosis function in a motor vehicle according to the following second aspect, and in computer program product terms by the features of a computer program product according to the following third aspect. Further embodiments relate to preferred design options of the application.

[0008] According to the first aspect, the application relates to a method for carrying out an on-board diagnosis function in a motor vehicle, the motor vehicle comprising at least one drive system, at least one operating element and at least one controller, the at least one controller having a processor, a control module and an on-board diagnosis function module. The method comprises the following method steps:

[0009] - activating the on-board diagnosis function in the on-board diagnosis function module;

[0010] - supplying a first signal curve S1 of an operating value CV of the operating element to the analysis module;

[0011] - analyzing the first signal curve S1 of the operating value CV by the analysis module;

[0012] - activating the filter module in the case of a positive analysis result; or

[0013] - deactivating the filter module and the on-board diagnosis function in the case of a negative analysis result and forwarding the first signal curve S1 of the operating value CV to the control module;

[0014] - filtering the first signal curve S1 of the operating value CV by the filter module with a selected damping parameter DP in the case of activation of the filter module to obtain a filtered second signal curve S2 of the operating element;

[0015] - forwarding the filtered second signal curve S2 of the operating value CV to the control module;

[0016] - generating a control signal ST by the control module from the existing first signal curve S1 or from the existing filtered second signal curve S2;

[0017] - transmitting the control signal ST to the drive system of the motor vehicle.

[0018] The stability of carrying out the on-board diagnosis function can thereby be improved, since the on-board diagnosis function is only carried out when suitable overall conditions (Rahmenbedingungen) exist on the basis of the driving behavior.

[0019] It is proposed in an improvement that the drive system comprises a conventional combustion engine, or a combustion engine and at least one electric motor for hybrid drive, or at least one electric motor, or at least one fuel cell.

[0020] In particular, the operating element is designed as an accelerator pedal and the operating value CV corresponds to an accelerator pedal value.

[0021] In an advantageous embodiment, the damping parameter DP comprises a limit value or a mathematical function.

[0022] In particular, it is proposed that the analysis module uses an algorithm to analyze the first signal curve S1 of the operating element and to calculate the damping parameter DP.

[0023] Advantageously, artificial intelligence algorithms are used, such as neural networks or deep learning.

[0024] In another embodiment, the execution of the on-board diagnosis function is deactivated in accordance with a specific driving route guidance.

[0025] In an improvement, it is proposed that the damping parameter DP is adapted in accordance with the first signal curve S1 of the operating element and / or the type of the on-board diagnosis function.

[0026] In particular, the on-board diagnosis function comprises a catalytic converter diagnosis function, a cylinder balance diagnosis function, a filter tank cleaning valve diagnosis function and / or a lambda self-adaptation diagnosis function.

[0027] According to a second aspect, the invention relates to a system for executing an on-board diagnosis function in a motor vehicle, the motor vehicle comprising a drive system, an operating element and a controller having a processor, a control module, an on-board diagnosis function module, a filter module and an analysis module. The controller is designed to activate the on-board diagnosis function in the on-board diagnosis function module and to supply a first signal curve S1 of an operating value CV of the operating element to the analysis module. The analysis module is designed to analyze the first signal curve S1 of the operating value CV and, in the case of a positive analysis result, to activate the filter module, or, in the case of a negative analysis result, to deactivate the filter module and the on-board diagnosis function and to forward the first signal curve S1 of the operating value CV to the control module. The filter module is designed, in the activated case, to filter the first signal curve S1 of the operating value CV with a selected damping parameter DP to obtain a filtered second signal curve S2 and to forward the filtered second signal curve S2 of the operating value CV to the control module. The control module is designed to generate a control signal ST from the existing first signal curve S1 or the filtered second signal curve S2 and to transmit the control signal ST to the drive system of the motor vehicle.

[0028] It is proposed in an improvement that the drive system comprises a conventional combustion engine, or a combustion engine and at least one electric motor for hybrid drive, or at least one electric motor, or at least one fuel cell, and the operating element is designed as an accelerator pedal and the operating value CV corresponds to an accelerator pedal value.

[0029] It is proposed in particular that the damping parameter DP comprises a limit value or a mathematical function.

[0030] Advantageously, the analysis module uses an algorithm to analyze the first signal curve S1 of the operating element and to calculate the damping parameter DP, in particular using an artificial intelligence algorithm such as a neural network or deep learning.

[0031] It is proposed in an advantageous embodiment that the analysis module and / or the filter module are designed to adapt the damping parameter DP depending on the first signal curve S1 of the operating element and / or the type of the on-board diagnostic function.

[0032] According to a third aspect, the present application proposes a computer program product comprising executable program code configured to cause a method according to the first aspect to be performed.

[0033] According to a fourth aspect, the present application proposes a non-transitory computer-readable storage medium having stored thereon executable program code which, when executed by a processor, causes a method according to the first aspect to be performed. BRIEF DESCRIPTION OF DRAWINGS

[0034] Further features, aspects, and advantages of the present application or of embodiments thereof will become apparent in the detailed description of the application or embodiments thereof, which follows, taken in conjunction with the accompanying drawings:

[0035] In the drawings:

[0036] Figure 1 a schematic illustration of a system according to the present application is shown;

[0037] Figure 2 a flow chart showing individual method steps of a method according to the present application is shown;

[0038] Figure 3 a computer program product according to an embodiment of the third aspect of the present application is shown schematically. DETAILED DESCRIPTION

[0039] In the following description, specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the application can be practiced without some or all of these specific details.

[0040] In Figure 1A system 100 for performing an on-board diagnosis function in a motor vehicle 10 is shown. The motor vehicle 10 is driven by a drive system 20. The drive system 20 can comprise a conventional combustion engine, or a combustion engine and at least one electric motor for hybrid drive, or at least one electric motor, or at least one fuel cell. Furthermore, a data communication system 30 is provided, which communicates with the drive system 20 and with individual motor vehicle modules and sensors. The data communication system 30 can be formed as a CAN bus (Control Area Network).

[0041] The system 100 has an operating element 22, such as in particular a gas pedal, which is operated by a driver of the motor vehicle 10. However, the operating element can also be a rotary knob or a joystick. A sensor 24 determines an operating value CV of the operating element 22, such as in particular a gas pedal value which reflects the position of the gas pedal. The sensor 24 forwards the operating value CV to a controller 40 of the motor vehicle 10, in particular by means of the data communication system 30. The controller 40 generates a control signal ST for controlling the combustion engine 20 as a function of the operating value CV.

[0042] The controller 40 comprises at least a processor 42, a control module 43, a filter module 44, an on-board diagnosis function module 45 and an analysis module 47.

[0043] For the purposes of the present application, a "processor" can be understood, for example, as a machine or an electronic circuit. The processor can be, in particular, a central processor (English: Central Processing Unit, CPU), a microprocessor or a microcontroller (for example an application-specific integrated circuit or a digital signal processor), which can be combined with a memory unit for storing program instructions. The processor can also be understood as a virtual processor, a virtual machine or a soft core CPU. The processor can also be, for example, a programmable processor which is equipped with configuration steps for implementing the methods according to the application or which is configured by means of configuration steps such that the programmable processor implements the features according to the application of the methods, components, modules or other aspects and / or partial aspects of the application.

[0044] For the purposes of the present application, a "module" can be understood, for example, as a processor and / or a memory unit for storing program instructions. The module is, for example, specifically set up for implementing program instructions and functions in order to carry out or implement the methods according to the application or the steps of the methods according to the application.

[0045] On-board diagnostic functions are, for example, catalytic converter diagnostic functions, cylinder balance diagnostic functions, filter tank purge valve diagnostic functions, valve lift diagnostic functions or lambda self-adaptation diagnostic functions. In the case of combustion engines, however, on-board diagnostic functions can only be carried out in driving situations in which the dynamic changes in engine speed and / or air mass flow are small, since the combustion engine operating point must be kept almost constant during the execution of the diagnosis in order to avoid falsification of the diagnosis result.

[0046] According to the application, the determined first signal curve S1 of the operating value CV is supplied to the filter module 44 of the controller 40. If the on-board diagnostic function module 45 is not activated, the first signal curve S1 of the operating value CV is not changed by the filter module 44 and the unfiltered signal curve S1 of the operating value CV forms the basis for generating the unfiltered control signal ST of the drive system 20. This means that the drive torque of the drive system 20 is essentially determined only by the signal curve S1 of the operating value CV of the operating element 22.

[0047] Conversely, if the on-board diagnostic function module 45 for carrying out the on-board diagnostic function is activated, the first signal curve S1 of the operating value CV is filtered, so that it is ensured that the on-board diagnostic function is carried out stably by means of the filtered second signal curve S2 of the operating element 22. From the filtered second signal curve S2 of the operating value CV, a filtered control signal ST is output by the controller 40 to the drive system 20, which ensures an operating mode of the drive system 20 for stably carrying out the on-board diagnostic function. This means that during the execution of the on-board diagnostic function, the actual drive torque of the drive system 20 is decoupled from the actual signal curve S1 of the operating value CV of the operating element 22.

[0048] In order to filter the first signal curve S1 of the operating value CV of the operating element 22, a damping parameter DP is provided. The damping parameter DP can be, for example, a limit value or a mathematical function. Furthermore, the damping parameter DP can be defined specifically for the respective on-board diagnostic function. Thus, for parallel diagnosis of motor vehicle functions, such as catalytic converter diagnosis, cylinder balance diagnosis of a multi-cylinder engine or filter tank purge valve diagnosis, for example, a damping parameter DP can be provided which regulates the constancy of the operating point of the drive system 20 in a very narrow range, while for individual diagnoses, such as lambda detection, a greater range is permitted.

[0049] Hereby, in the case that the drive system 20 is designed as a combustion engine, by filtering the first signal curve S1 of the accelerator pedal value according to the application, the operating point of the combustion engine is kept constant.

[0050] In order to make the driver not feel annoyed by the filtering function and the on-board diagnosis function and also to prevent safety-critical driving situations, the first signal curve S1 of the operating value CV is supplied to the analysis module 47. The analysis module 47 has algorithms for analyzing the measurement data and for calculating operating parameters, in particular in order to control the filtering module 44. Thus, for example, the damping parameter DP is calculated and determined in the analysis module 47. The algorithms of the analysis module 47 can in particular use artificial intelligence algorithms such as neural networks or deep learning.

[0051] In the analysis module 47, in particular the signal curve S1 of the operating value CV is differentiated in order to derive the temporal change of the first signal curve S1 of the operating value CV. Furthermore, the signal curve S1 of the operating value CV can be integrated. If a rapid and significant change of the operating value CV is derived here, the filtering module 44 is deactivated. In the case of a combustion engine, this means that the accelerator pedal is pressed rapidly and powerfully, which is a critical driving situation, for example, in which fast and high accelerations are required.

[0052] It can also be proposed that further sensor signals of further motor vehicle devices, such as in particular the brake system, are supplied to the analysis module 47. If the analysis module 47 determines a critical driving situation on the basis of the inputted measurement data of the sensors, this is evaluated as a negative analysis result with regard to the execution of the on-board diagnosis function, and the analysis module 47 transmits a control instruction to the filtering module 44 to deactivate the filtering. Since the first signal curve S1 of the operating value CV is filtered in the filtering module 44 only if the analysis module 47 has previously classified the analysis result as positive, the driver of the motor vehicle 10 does not feel annoyed by the adaptation of the operating mode of the drive system 20 to execute the on-board diagnosis function.

[0053] It is also proposed in the improvement that the on-board diagnosis function is not executed upon starting the motor vehicle 10 or depending on a specific driving route. For this purpose, the analysis module 47 can be connected to a navigation device of the motor vehicle 10 and / or to further storage modules and / or databases and derive from the obtained data whether the on-board diagnosis function needs to be deactivated.

[0054] It can also be proposed that the value of the damping parameter DP is changed depending on the time profile of the driving route and / or the driving section and / or the number of on-board diagnosis functions that have already been executed. In particular, the analysis module 47 can also be connected to imaging devices and sensor devices in order to evaluate the driving situation by the analysis module 47 on the basis of the received image data and measurement data. If the driving situation is rated as critical, the filtering module 44 and / or the on-board diagnosis function module 45 are deactivated by the analysis module 47, since the analysis result for executing the on-board diagnosis function has been evaluated as negative.

[0055] In Figure 2The method steps of the method according to the application are shown in the flowchart.

[0056] In step S10, the on-board diagnosis function in the on-board diagnosis function module 45 is activated in the motor vehicle 10.

[0057] In step S20, the first signal curve S1 of the operating value CV of the operating element 22 of the motor vehicle 10 is supplied to the analysis module 47.

[0058] In step S30, the first signal curve S1 of the operating value CV is analyzed by the analysis module 47.

[0059] In step S40, the filter module 44 is activated in the case of a positive analysis result.

[0060] In step S50, the on-board diagnosis function and the filter module 44 are deactivated and the first signal curve S1 of the operating value CV is forwarded to the control module 43 in the case of a negative analysis result.

[0061] In step S60, the first signal curve S1 of the operating value CV is filtered by the filter module 44 with the selected damping parameter DP when the filter module 44 is activated, in order to obtain a filtered second signal curve S2 of the operating value CV.

[0062] In step S70, the filtered second signal curve S2 of the operating value CV is forwarded to the control module 43.

[0063] In step S80, a control signal ST is generated by the control module 43 from the existing first signal curve S1 or the filtered second signal curve S2.

[0064] In step S90, the control signal ST is transmitted to the drive system 20 of the motor vehicle 10.

[0065] Figure 3 A computer program product 200 is schematically illustrated, which comprises executable program code 250 which is configured to implement the method according to the first aspect of the application.

[0066] The application also provides a non-transitory computer-readable storage medium having stored thereon executable program code which, when executed by a processor, causes one of the methods according to the application to be performed.

[0067] According to the application, the first signal curve S1 of the operating value CV of the operating element 22 is evaluated by the analysis module 47, after which it is supplied to the filter module with the damping parameter DP. Thereby, the stability of the execution of the on-board diagnosis function can be improved, since the on-board diagnosis function is only executed when suitable overall conditions exist based on the driving behavior. It is also possible to adapt the damping parameter DP to the driving situation, so that a dynamic filtering of the signal curve S1 of the operating value CV and thereby a control of the drive system 20 according to the actually existing driving situation is made possible. This improves the safety when executing the on-board diagnosis function, however also efficiency, since an interruption of the on-board diagnosis function can be avoided and thus the environmental adaptability can be improved.

[0068] List of reference signs

[0069] 10 motor vehicle

[0070] 20 drive system

[0071] 22 operating element

[0072] 24 sensor

[0073] 30 data communication system

[0074] 40 controller

[0075] 42 processor

[0076] 43 control module

[0077] 44 filter module

[0078] 45 on-board diagnosis function module

[0079] 47 analysis module

[0080] 100 system

[0081] 200 computer program product

[0082] 250 program code

[0083] CV operating value

[0084] DP damping parameter

[0085] S1 unfiltered first signal curve

[0086] S2 filtered second signal curve

[0087] ST control signal

Claims

1. A method for carrying out an on-board diagnosis function in a motor vehicle (10), which motor vehicle comprises at least one drive system (20), at least one operating element (22) and at least one controller (40) having a processor (42), a control module (43) and an on-board diagnosis function module (45), the method having the following method steps: - activating an on-board diagnosis function in the on-board diagnosis function module (45) (S10); - supplying a first signal curve (S1) of an operating value (CV) of the operating element (22) to an analysis module (47) (S20); - analyzing the first signal curve (S1) of the operating value (CV) by the analysis module (47) (S30); - the analysis module activating a filter module (44) in the case of a positive analysis result with respect to carrying out an on-board diagnosis function (S40); or - the analysis module deactivating the filter module (44) and the on-board diagnosis function and forwarding the first signal curve (S1) of the operating value (CV) to the control module (43) in the case of a negative analysis result with respect to carrying out an on-board diagnosis function (S50); - filtering the first signal curve (S1) of the operating value (CV) by the filter module (44) with a selected damping parameter (DP) to obtain a filtered second signal curve (S2) of the operating element (22) in the case of activation of the filter module (44) (S60); - forwarding the filtered second signal curve (S2) of the operating value (CV) to the control module (43) (S70); - generating a control signal (ST) by the control module (43) from the existing first signal curve (S1) or from the existing filtered second signal curve (S2) (S80); - transmitting the control signal (ST) to the drive system (20) of the motor vehicle (10) (S90), filtering the first signal curve (S1) of the operating value (CV) in the filter module only if the analysis module has previously classified the analysis result with respect to carrying out an on-board diagnosis function as positive, ​ ​ ​ ​ ​ ​ ​ ​ ​ wherein, ​ wherein, in the case that the first signal curve (SI) of the operating value (CV) is not changed by the filter module (44) and the unfiltered first signal curve (SI) of the operating value (CV) forms the basis for generating an unfiltered control signal (ST) for the drive system (20), the drive torque of the drive system (20) is determined exclusively by the first signal curve (SI) of the operating value (CV) of the operating element (22); and, in the case that a filtered control signal (ST) is output by the controller (40) to the drive system (20) in accordance with the filtered second signal curve (S2) of the operating value (CV), during the execution of the on-board diagnostic function, the actual drive torque of the drive system (20) is decoupled from the first signal curve (SI) of the operating value (CV) of the operating element (22), and wherein the motor vehicle (10) is driven by the drive system (20).

2. The method according to claim 1, wherein the drive system (20) comprises a conventional combustion engine, or a combustion engine and at least one electric motor for hybrid drive, or at least one electric motor, or at least one fuel cell.

3. The method according to claim 1 or 2, wherein the operating element (22) is designed as an accelerator pedal and the operating value (CV) corresponds to an accelerator pedal value.

4. The method according to claim 1 or 2, wherein the damping parameter (DP) contains a limit value or a mathematical function.

5. The method according to claim 1 or 2, wherein the analysis module (47) uses an algorithm to analyze the first signal curve (SI) of the operating element (22) and to calculate the damping parameter (DP).

6. The method according to claim 5, wherein an artificial intelligence algorithm is used.

7. The method according to claim 1 or 2, wherein the execution of the on-board diagnostic function is deactivated in accordance with a specific driving route guidance.

8. The method according to claim 1 or 2, wherein the damping parameter (DP) is adapted in accordance with the first signal curve (SI) of the operating element (22) and / or the type of the on-board diagnostic function.

9. The method according to claim 1 or 2, wherein the on-board diagnostic function comprises a catalytic converter diagnostic function, a cylinder balance diagnostic function, a filter tank cleaning valve diagnostic function and / or a lambda self-adaptation diagnostic function.

10. The method according to claim 6, wherein the artificial intelligence algorithm comprises a neural network or deep learning.

11. A system (100) for performing an on-board diagnostic function in a motor vehicle (10), the motor vehicle comprising a drive system (20), at least one operating element (22) and a controller (40) having a processor (42), a control module (43), an on-board diagnostic function module (45), a filter module (44) and an analysis module (47); wherein the controller is designed to activate an on-board diagnostic function in the on-board diagnostic function module (45) and to supply a first signal curve (SI) of an operating value (CV) of the operating element (22) to the analysis module (47); wherein the analysis module (47) is designed to analyze the first signal curve (SI) of the operating value (CV) and to activate the filter module (44) in the case of a positive analysis result with respect to the execution of the on-board diagnostic function or to deactivate the filter module (44) and the on-board diagnostic function and to forward the first signal curve (SI) of the operating value (CV) to the control module (43) in the case of a negative analysis result with respect to the execution of the on-board diagnostic function; wherein the filter module (44), when activated, is designed to filter the first signal curve (SI) of the operating value (CV) with a selected damping parameter (DP) to obtain a filtered second signal curve (S2) and to forward the filtered second signal curve (S2) of the operating value (CV) to the control module (43); wherein the control module (43) is designed to generate a control signal (ST) from the existing first signal curve (SI) or the existing filtered second signal curve (S2) and to transmit the control signal (ST) to the drive system (20) of the motor vehicle (10), wherein the first signal curve (SI) of the operating value (CV) is filtered in the filter module only if the analysis module has previously classified the analysis result with regard to the execution of the on-board diagnostic function as positive, wherein, in the case that the first signal curve (SI) of the operating value (CV) is not changed by the filter module (44) and the unfiltered first signal curve (SI) of the operating value (CV) forms the basis for generating an unfiltered control signal (ST) for the drive system (20), the drive torque of the drive system (20) is determined exclusively by the first signal curve (SI) of the operating value (CV) of the operating element (22); and, in the case that a filtered control signal (ST) is output by the controller (40) to the drive system (20) in accordance with the filtered second signal curve (S2) of the operating value (CV), during the execution of the on-board diagnostic function, the actual drive torque of the drive system (20) is decoupled from the first signal curve (SI) of the operating value (CV) of the operating element (22), and wherein the motor vehicle (10) is driven by the drive system (20).

12. The system (100) according to claim 11, wherein the drive system (20) comprises a conventional combustion engine, or a combustion engine and at least one electric motor for hybrid drive, or at least one electric motor, or at least one fuel cell, and wherein the operating element (22) is designed as an accelerator pedal and the operating value (CV) corresponds to an accelerator pedal value.

13. The system (100) according to claim 11 or 12, wherein the damping parameter (DP) contains a limit value or a mathematical function.

14. The system (100) according to claim 11 or 12, wherein the analysis module (47) uses an algorithm to analyze the first signal curve (SI) of the operating element (22) and to calculate the damping parameter (DP).

15. The system (100) according to claim 14, wherein the analysis module (47) uses an artificial intelligence algorithm to analyze the first signal curve (SI) of the operating element (22) and to calculate the damping parameter (DP).

16. The system (100) according to claim 15, wherein the artificial intelligence algorithm comprises a neural network or deep learning.

17. The system (100) according to claim 11 or 12, wherein the analysis module (47) and / or the filter module (45) are designed to adapt the damping parameter (DP) depending on the first signal curve (SI) of the operating element (22) and / or the type of the on-board diagnostic function.

18. A computer program product (200) comprising executable program code (250), the program code being configured to implement the method according to one of claims 1 to 10.

19. A non-transitory computer-readable storage medium having stored thereon executable program code which, when executed by a processor, causes a method according to one of claims 1 to 10 to be performed.

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