WO2004038360A1 - Method and control apparatus for performing diagnoses on a motor vehicle - Google Patents

Method and control apparatus for performing diagnoses on a motor vehicle Download PDF

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Publication number
WO2004038360A1
WO2004038360A1 PCT/EP2003/008723 EP0308723W WO2004038360A1 WO 2004038360 A1 WO2004038360 A1 WO 2004038360A1 EP 0308723 W EP0308723 W EP 0308723W WO 2004038360 A1 WO2004038360 A1 WO 2004038360A1
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WO
WIPO (PCT)
Prior art keywords
motor vehicle
control device
diagnoses
way
measuring station
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PCT/EP2003/008723
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German (de)
French (fr)
Inventor
Volker Lantzsch
Original Assignee
Volkswagen Aktiengesellschaft
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Application filed by Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Publication of WO2004038360A1 publication Critical patent/WO2004038360A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters

Definitions

  • the present invention relates to a control device for a motor vehicle, in which several diagnoses for testing the motor vehicle are stored, and to a method for testing a motor vehicle with a control device by means of a measuring station.
  • the diagnostic system described in this document comprises an electronic control system with self-test functions and a non-volatile memory in which a large number of programs for diagnosing various parts of the motor vehicle are stored.
  • the motor vehicle is usually examined for a given reason or on the basis of a specific defect, so that the corresponding diagnoses are specifically called up. In this way, it is disadvantageously not possible to carry out a comprehensive check of the motor vehicle without having to call up all the stored diagnoses in succession with the corresponding increased effort.
  • the present invention is based on the object of creating a control unit for a motor vehicle or a method for testing a motor vehicle, wherein the most extensive possible inspection of the motor vehicle can be achieved with little effort.
  • this object is achieved with a control device with the feature of claim 1 or with a method with the features of claim 8.
  • the subclaims each define preferred and advantageous embodiments of the present invention.
  • the control device of the motor vehicle is capable of performing several or all of the stored diagnoses in response to a single group diagnosis call. In this way, extensive checking of the motor vehicle can be achieved with little effort. For example, a final check can be carried out at the end with little effort when manufacturing a motor vehicle.
  • the motor vehicle can in principle be checked for faults in a workshop for little effort, which have not been specifically searched for.
  • all the stored diagnoses are carried out by the control unit in response to the group diagnosis call.
  • the motor vehicle can thus be tested as extensively as possible with little effort.
  • display instructions can be sent from the control unit to the measuring station in order to cause the measuring station to display instructions for carrying out control interventions in a motor vehicle. These are aimed in particular at a person sitting in the motor vehicle who intervenes in the motor vehicle in accordance with the instructions. In this way, control interventions or measures can be carried out in the motor vehicle that are necessary or expedient for carrying out the diagnoses. This can be the actuation of control elements, for example to be able to check the function of the control elements.
  • the instructions displayed by the measuring station can, for example, focus on the actuation of the gas and / or brake pedal.
  • the function of the accelerator pedal and a connected sensor and of the brake pedal can be checked, and in the case of the brake pedal it is additionally ensured that the motor vehicle is stationary.
  • the accelerator pedal it can be provided that during the diagnoses the engine cannot be controlled from the accelerator pedal, but can only be controlled by the control unit.
  • the control device is preferably set up in such a way that it only carries out the diagnoses if certain conditions are met. This can be, for example, keeping the accelerator and / or brake pedal pressed. In this way it can be ensured that a person is sitting in the motor vehicle and the test of the motor vehicle is therefore carried out under supervision.
  • control of the motor vehicle and in particular its engine is transferred from the control unit back to the control elements in the motor vehicle, as could occur, for example, as a result of an accelerator pedal depressed during the test, can be seen that the motor of the motor vehicle can only be controlled from the accelerator pedal once it has been brought into the idle position.
  • the only drawing shows schematically a motor vehicle with a control unit with a connected measuring station.
  • FIG. 1 shows a motor vehicle 1 with a control unit 2, which is connected to a measuring station 4.
  • the arrangement shown is located at the end of a production line and is used for the final check of the motor vehicle 1.
  • a connection cable 3 is provided for the connection 1 between the control unit 2 and the measuring station 4.
  • the control unit 2 and the measuring station 4 both have suitable interfaces in order to be able to exchange data.
  • the measuring station 4 also has a display 5 for displaying instructions to a person sitting in the motor vehicle 1, the measuring station 4 being arranged in relation to the motor vehicle 1 in such a way that a person sitting in the driver's seat of the motor vehicle 1 can see the display 5 ,
  • the measuring station 4 sends a group diagnosis call to the control unit 2, whereupon the control unit 2 independently carries out all the stored diagnoses one after the other.
  • the motor of the motor vehicle 1 is also tested and operated for this purpose in various operating areas, for which purpose influencing of the motor via the accelerator pedal of the motor vehicle 1 is prevented.
  • the engine is controlled exclusively by control unit 2 in accordance with the stored diagnoses.
  • the display 5 shows an instruction which prompts the driver to depress the brake and the accelerator pedal.
  • the gear lever must be in the neutral / park position. This is monitored by control unit 2, which only starts the test if these conditions are met. It also ensures that there is no error in the system or the error memory has no corresponding entry. It also ensures that the vehicle is stationary.
  • control unit 2 If it is determined by control unit 2 that the brake or accelerator pedal is no longer depressed, the test is stopped immediately and the engine is operated at idle. After the end of the test, the control unit 2 sets up again in such a way that the engine of the motor vehicle 1 can be controlled by means of the accelerator pedal. In order to prevent the motor vehicle from being inadvertently operated in full load operation as a result of a further depression of the accelerator pedal, control of the engine via the accelerator pedal is only permitted again when the accelerator pedal has previously been in the idle position.
  • the engine is preferably operated in alternating operating modes, as would occur, for example, during a short real journey. It can also be provided that various such exemplary short trips are called up one after the other.
  • the result can be displayed at the measuring station 4 and / or in the motor vehicle 1.
  • test can also be carried out without the measuring station, in that the group diagnosis call to the control unit 2 can also be triggered from within the motor vehicle 1. This can be done, for example, by operating certain operating elements in a specific sequence and / or combination.

Abstract

The invention concerns a control apparatus (2) for testing a motor vehicle (1). The invention is characterized in that a measuring station (4) generates the order for a set of diagnoses to be performed. When the control apparatus (2) receives said order, it automatically performs a plurality, in particular all, of the stored diagnoses. Thus it is possible to easily perform a complete diagnosis of the motor vehicle (1). Such a diagnosis is carried out for example at the end of a production line for the final test of the motor vehicle (1).

Description

Verfahren und Steuergerät zur Durchführung von Diagnosen bei einem Kraftfahrzeug Method and control device for carrying out diagnoses in a motor vehicle
Die vorliegende Erfindung betrifft ein Steuergerät für ein Kraftfahrzeug, in dem mehrere Diagnosen zum Testen des Kraftfahrzeugs gespeichert sind, sowie ein Verfahren zum Testen eines Kraftfahrzeugs mit einem Steuergerät mitteis einer Messstation.The present invention relates to a control device for a motor vehicle, in which several diagnoses for testing the motor vehicle are stored, and to a method for testing a motor vehicle with a control device by means of a measuring station.
Zum Testen eines Kraftfahrzeugs bzw. zur Durchführung von Diagnosen bei dem Kraftfahrzeug ist es bekannt, in einem Steuergerät des Kraftfahrzeugs mehrere Diagnosen zu speichern, die von außen insbesondere von einer Messstation aufgerufen werden können. Derartige Aufrufe von Diagnosen finden insbesondere in Werkstätten statt.To test a motor vehicle or to carry out diagnoses on the motor vehicle, it is known to store a plurality of diagnoses in a control unit of the motor vehicle, which can be called up from the outside, in particular by a measuring station. Such calls of diagnoses take place in particular in workshops.
Ein derartiges System ist beispielsweise durch die US 5,005,129 bekannt. Das in dieser Druckschrift beschriebene Diagnosesystem umfasst ein elektronisches Steuersystem mit Selbsttestfunktionen und einem nicht flüchtigen Speicher, in dem eine Vielzahl von Pro- grammen zur Diagnose verschiedener Teile des Kraftfahrzeugs gespeichert sind.Such a system is known for example from US 5,005,129. The diagnostic system described in this document comprises an electronic control system with self-test functions and a non-volatile memory in which a large number of programs for diagnosing various parts of the motor vehicle are stored.
Bei einem derartigen Anwendungsfall wird das Kraftfahrzeug in aller Regel aus einem gegebenen Anlass heraus bzw. auf Grund eines konkreten Mangels untersucht, so dass gezielt die entsprechenden Diagnosen aufgerufen werden. Nachteiligerweise ist auf diese Weise keine umfangreiche Überprüfung des Kraftfahrzeugs möglich, ohne dass sämtliche gespeicherte Diagnosen nacheinander mit dem entsprechenden erhöhten Aufwand aufgerufen werden.In such an application, the motor vehicle is usually examined for a given reason or on the basis of a specific defect, so that the corresponding diagnoses are specifically called up. In this way, it is disadvantageously not possible to carry out a comprehensive check of the motor vehicle without having to call up all the stored diagnoses in succession with the corresponding increased effort.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, ein Steuergerät für ein Kraftfahr- zeug bzw. ein Verfahren zum Testen eines Kraftfahrzeugs zu schaffen, wobei mit geringem Aufwand eine möglichst umfangreiche Überprüfung des Kraftfahrzeugs erreicht werden kann. Erfindungsgemäß wird diese Aufgabe mit einem Steuergerät mit dem Merkmal des Anspruchs 1 bzw. mit einem Verfahren mit den Merkmalen des Anspruchs 8 gelöst. Die Unteransprüche definieren jeweils bevorzugte und vorteilhafte Ausführungsformen der vorlie- genden Erfindung. Erfindungsgemäß ist das Steuergerät des Kraftfahrzeugs in der Lage, auf einen einzigen Gruppendiagnoseaufruf hin mehrere oder alle gespeicherten Diagnosen durchzuführen. Auf diese Weise kann eine weitgehende Überprüfung des Kraftfahrzeugs mit geringem Aufwand erreicht werden. Beispielsweise kann bei der Herstellung eines Kraftfahrzeugs am Ende mit geringem Aufwand eine abschließende Überprüfung vorgenommen werden. Weiterhin kann mit geringem Aufwand in einer Werkstatt das Kraftfahrzeug grundsätzlich auf Fehler hin ü- berprüft werden, nach denen nicht gezielt gesucht worden ist.The present invention is based on the object of creating a control unit for a motor vehicle or a method for testing a motor vehicle, wherein the most extensive possible inspection of the motor vehicle can be achieved with little effort. According to the invention, this object is achieved with a control device with the feature of claim 1 or with a method with the features of claim 8. The subclaims each define preferred and advantageous embodiments of the present invention. According to the invention, the control device of the motor vehicle is capable of performing several or all of the stored diagnoses in response to a single group diagnosis call. In this way, extensive checking of the motor vehicle can be achieved with little effort. For example, a final check can be carried out at the end with little effort when manufacturing a motor vehicle. Furthermore, the motor vehicle can in principle be checked for faults in a workshop for little effort, which have not been specifically searched for.
Vorteilhafterweise werden von dem Steuergerät auf den Gruppendiagnoseaufruf hin sämtli- ehe gespeicherten Diagnosen durchgeführt. So kann mit geringem Aufwand das Kraftfahrzeug möglichst umfangreich getestet werden.Advantageously, all the stored diagnoses are carried out by the control unit in response to the group diagnosis call. The motor vehicle can thus be tested as extensively as possible with little effort.
Bei der Durchführung der Diagnosen können von dem Steuergerät zur Messstation Anzeigeanweisungen gesendet werden, um die Messstation dazu zu veranlassen, Anweisungen zur Vornahme von Stelleingriffen bei einem Kraftfahrzeug anzuzeigen. Diese richten sich insbesondere an eine in dem Kraftfahrzeug sitzende Person, die entsprechend der Anweisungen Stelleingriffe in dem Kraftfahrzeug vornimmt. Auf diese Weise können in dem Kraftfahrzeug Stelleingriffe bzw. Maßnahmen durchgeführt werden, die zur Durchführung der Diagnosen erforderlich oder zweckmäßig sind. Dies kann das Betätigen von Bedienelementen sein, um beispielsweise die Funktion der Bedienelemente überprüfen zu können.When the diagnoses are carried out, display instructions can be sent from the control unit to the measuring station in order to cause the measuring station to display instructions for carrying out control interventions in a motor vehicle. These are aimed in particular at a person sitting in the motor vehicle who intervenes in the motor vehicle in accordance with the instructions. In this way, control interventions or measures can be carried out in the motor vehicle that are necessary or expedient for carrying out the diagnoses. This can be the actuation of control elements, for example to be able to check the function of the control elements.
Die von der Messstation angezeigten Anweisungen können beispielsweise sich auf das Betätigen des Gas- und/oder Bremspedals richten. Auf diese Weise kann die Funktion des Gaspedals und eines angeschlossenen Sensors sowie des Bremspedals überprüft werden, wobei im Fall des Bremspedals zusätzlich sichergestellt wird, dass das Kraftfahrzeug stillsteht. Dabei kann im Fall des Gaspedals vorgesehen sein, dass während der Diagnosen sich der Motor nicht vom Gaspedal aus steuern lässt, sondern ausschließlich von dem Steuergerät aus steuerbar ist.The instructions displayed by the measuring station can, for example, focus on the actuation of the gas and / or brake pedal. In this way, the function of the accelerator pedal and a connected sensor and of the brake pedal can be checked, and in the case of the brake pedal it is additionally ensured that the motor vehicle is stationary. In the case of the accelerator pedal, it can be provided that during the diagnoses the engine cannot be controlled from the accelerator pedal, but can only be controlled by the control unit.
Vorzugsweise ist das Steuergerät derart eingerichtet, dass sie die Diagnosen nur bei Vorliegen bestimmter Voraussetzungen ausführt. Diese können beispielsweise das Getretenhalten von Gas- und/oder Bremspedal sein. Auf diese Weise kann sichergestellt werden, dass eine Person im Kraftfahrzeug sitzt und so der Test des Kraftfahrzeugs unter Aufsicht stattfindet. Um nach der Durchführung der Diagnosen, wenn die Kontrolle über das Kraftfahrzeug und insbesondere dessen Motor von dem Steuergerät wieder an die Bedienelemente im Kraftfahrzeug übertragen werden, gefährliche Situationen zu vermeiden, wie es beispielsweise infolge eines während des Tests durchgedrückten Gaspedals eintreten könnte, kann vorge- sehen sein, dass der Motor des Kraftfahrzeugs sich erst wieder vom Gaspedal aus steuern lässt, wenn dieses zuvor in die Leerlaufstellung gebracht worden ist.The control device is preferably set up in such a way that it only carries out the diagnoses if certain conditions are met. This can be, for example, keeping the accelerator and / or brake pedal pressed. In this way it can be ensured that a person is sitting in the motor vehicle and the test of the motor vehicle is therefore carried out under supervision. In order to avoid dangerous situations after the diagnosis has been carried out, when control of the motor vehicle and in particular its engine is transferred from the control unit back to the control elements in the motor vehicle, as could occur, for example, as a result of an accelerator pedal depressed during the test, can be seen that the motor of the motor vehicle can only be controlled from the accelerator pedal once it has been brought into the idle position.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels unter Be- zugnahme auf die beigefügte Zeichnung näher erläutert.The invention is explained in more detail below on the basis of a preferred exemplary embodiment with reference to the attached drawing.
Die einzige Zeichnung zeigt schematisch ein Kraftfahrzeug mit Steuergerät mit angeschlossener Messstation.The only drawing shows schematically a motor vehicle with a control unit with a connected measuring station.
In Figur 1 ist ein Kraftfahrzeug 1 mit einem Steuergerät 2 abgebildet, das mit einer Messstation 4 verbunden ist. Die dargestellte Anordnung befindet sich am Ende einer Produktionsstrecke und dient zur abschließenden Überprüfung des Kraftfahrzeugs 1. Zur Verbindung 1 zwischen dem Steuergerät 2 und der Messstation 4 ist ein Verbindungskabel 3 vorgesehen. Das Steuergerät 2 und die Messstation 4 verfügen beide über geeignete Schnittstellen, um Daten austauschen zu können.FIG. 1 shows a motor vehicle 1 with a control unit 2, which is connected to a measuring station 4. The arrangement shown is located at the end of a production line and is used for the final check of the motor vehicle 1. A connection cable 3 is provided for the connection 1 between the control unit 2 and the measuring station 4. The control unit 2 and the measuring station 4 both have suitable interfaces in order to be able to exchange data.
Die Messstation 4 verfügt weiterhin über eine Anzeige 5 zur Anzeige von Anweisungen an eine im Kraftfahrzeug 1 sitzende Person, wobei die Messstation 4 in Bezug auf das Kraftfahrzeug 1 derart angeordnet ist, dass eine auf dem Fahrersitz des Kraftfahrzeugs 1 sitzende Person die Anzeige 5 sehen kann.The measuring station 4 also has a display 5 for displaying instructions to a person sitting in the motor vehicle 1, the measuring station 4 being arranged in relation to the motor vehicle 1 in such a way that a person sitting in the driver's seat of the motor vehicle 1 can see the display 5 ,
Zum Testen des Kraftfahrzeugs 1 sendet die Messstation 4 an das Steuergerät 2 einen Gruppendiagnoseaufruf, worauf das Steuergerät 2 sämtliche abgespeicherte Diagnosen nacheinander selbstständig durchführt. Dabei wird auch der Motor des Kraftfahrzeugs 1 ge- testet und zu diesem Zweck in verschiedenen Betriebsbereichen betrieben, wozu eine Beeinflussung des Motors über das Gaspedal des Kraftfahrzeugs 1 unterbunden wird. Der Motor wird ausschließlich vom Steuergerät 2 entsprechend der abgespeicherten Diagnosen angesteuert.To test the motor vehicle 1, the measuring station 4 sends a group diagnosis call to the control unit 2, whereupon the control unit 2 independently carries out all the stored diagnoses one after the other. The motor of the motor vehicle 1 is also tested and operated for this purpose in various operating areas, for which purpose influencing of the motor via the accelerator pedal of the motor vehicle 1 is prevented. The engine is controlled exclusively by control unit 2 in accordance with the stored diagnoses.
Um auch die Funktion des Gaspedals bzw. eines daran angeschlossenen Sensors und des Bremspedals überprüfen zu können, wird von der Anzeige 5 eine Anweisung angezeigt, die zum Treten der Bremse und des Gaspedals auffordert. Selbstverständlich muss gleichzeitig bei einem Kraftfahrzeug 1 mit Schaltgetriebe der Gang ausgekuppelt sein bzw. bei einem Kraftfahrzeug 1 mit Automatikgetriebe der Getriebehebel in der Stellung Neutral/Parken ste- hen. Dies wird vom Steuergerät 2 überwacht, welches nur bei Vorliegen dieser Voraussetzungen den Test beginnt. Weiterhin wird sichergestellt, dass im System kein Fehler vorliegt bzw. der Fehlerspeicher keinen entsprechenden Eintrag aufweist. Zusätzlich wird sichergestellt, dass das Fahrzeug steht.In order to also be able to check the function of the accelerator pedal or a sensor connected to it and the brake pedal, the display 5 shows an instruction which prompts the driver to depress the brake and the accelerator pedal. Of course, in a motor vehicle 1 with a manual transmission, the gear must be disengaged at the same time, or in a motor vehicle 1 with an automatic transmission, the gear lever must be in the neutral / park position. This is monitored by control unit 2, which only starts the test if these conditions are met. It also ensures that there is no error in the system or the error memory has no corresponding entry. It also ensures that the vehicle is stationary.
Wenn vom Steuergerät 2 festgestellt wird, dass die Bremse oder das Gaspedal nicht mehr getreten ist, wird der Test sofort abgebrochen und der Motor im Leerlauf betrieben. Nach der Beendigung des Tests richtet sich das Steuergerät 2 wieder derart ein, dass der Motor des Kraftfahrzeugs 1 mittels des Gaspedals angesteuert werden kann. Um zu verhindern, dass infolge eines weiterhin durchgetretenen Gaspedals bei diesem Umschalten das Kraftfahrzeug ungewollt im Volllastbetrieb betrieben wird, ist vorgesehen, dass eine Ansteuerung des Motors über das Gaspedal erst wieder zugelassen wird, wenn das Gaspedal zuvor in der Leerlaufposition gewesen ist.If it is determined by control unit 2 that the brake or accelerator pedal is no longer depressed, the test is stopped immediately and the engine is operated at idle. After the end of the test, the control unit 2 sets up again in such a way that the engine of the motor vehicle 1 can be controlled by means of the accelerator pedal. In order to prevent the motor vehicle from being inadvertently operated in full load operation as a result of a further depression of the accelerator pedal, control of the engine via the accelerator pedal is only permitted again when the accelerator pedal has previously been in the idle position.
Vorzugsweise wird beim Durchführen der Tests der Motor in wechselnden Betriebsweisen betrieben, wie sie beispielsweise bei einer kurzen realen Fahrt auftreten würden. Dabei kann auch vorgesehen werden, dass verschiedene derartige beispielhafte Kurzfahrten nacheinander abgerufen werden. Am Ende des Tests kann das Ergebnis bei der Messstation 4 und/oder im Kraftfahrzeug 1 angezeigt werden.When the tests are carried out, the engine is preferably operated in alternating operating modes, as would occur, for example, during a short real journey. It can also be provided that various such exemplary short trips are called up one after the other. At the end of the test, the result can be displayed at the measuring station 4 and / or in the motor vehicle 1.
Weiterhin kann vorgesehen sein, dass der Test auch ohne die Messstation durchgeführt werden kann, indem der Gruppendiagnoseaufruf an das Steuergerät 2 auch von innerhalb des Kraftfahrzeugs 1 ausgelöst werden kann. Dies kann beispielsweise durch Betätigen bestimmter Bedienelemente in einer bestimmten Reihenfolge und/oder Kombination geschehen. Furthermore, it can be provided that the test can also be carried out without the measuring station, in that the group diagnosis call to the control unit 2 can also be triggered from within the motor vehicle 1. This can be done, for example, by operating certain operating elements in a specific sequence and / or combination.
BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS
Kraftfahrzeug Steuergerät Verbindungskabel Messstation Anzeige Motor vehicle control unit connection cable measuring station display

Claims

P AT E N TA N S P R Ü C H E P AT EN TA NSPRÜ CHE
1. Steuergerät (2) für ein Kraftfahrzeug (1), mit einer Schnittstelle zur Ankopplung an eine Messstation (4), welches Steuergerät (2) derart eingerichtet ist, dass in ihm mehrere Diagnosen zum Testen des Kraftfahrzeugs (1) gespeichert sind, dadurch gekennzeichnet, dass das Steuergerät (2) weiterhin derart eingerichtet ist, dass es auf einen einzigen Gruppendiagnoseaufruf der Messstation (4) hin mehrere gespeicherte Diagnosen selbstständig durchführt.1. Control device (2) for a motor vehicle (1), with an interface for coupling to a measuring station (4), which control device (2) is set up in such a way that several diagnoses for testing the motor vehicle (1) are stored in it characterized in that the control device (2) is further set up in such a way that it independently carries out several stored diagnoses upon a single group diagnosis call of the measuring station (4).
2. Steuergerät nach Anspruch 1 , dadurch gekennzeichnet, dass es derart eingerichtet ist, dass es auf den Gruppendiagnoseaufruf hin alle gespeicherten Diagnosen durchführt.2. Control device according to claim 1, characterized in that it is set up in such a way that it carries out all stored diagnoses in response to the group diagnosis call.
3. Steuergerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Steuergerät (2) derart eingerichtet ist, dass es beim Durchführen der Diagnosen Anzeigebefehle an die Messstation (4) zum Anzeigen von Anweisungen zur Vornahme von Stelleingriffen bei dem Kraftfahrzeug (1) aussendet.3. Control device according to one of the preceding claims, characterized in that the control device (2) is set up in such a way that, when the diagnoses are carried out, it sends display commands to the measuring station (4) for displaying instructions for carrying out control interventions in the motor vehicle (1) ,
4. Steuergerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es derart eingerichtet ist, dass es auf den Gruppendiagnoseaufruf der Messstation (4) hin den Motor des Kraftfahrzeugs (1) derart ansteuert, dass dieser in wechselnden Betriebsbereichen betrieben wird.4. Control device according to one of the preceding claims, characterized in that it is set up in such a way that it controls the engine of the motor vehicle (1) in response to the group diagnosis call of the measuring station (4) such that it is operated in changing operating ranges.
5. Steuergerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es derart eingerichtet ist, dass es die Diagnosen nur ausführt, wenn Stelleingriffe bei dem Kraftfahrzeug (1) bestimmte Voraussetzungen erfüllen.5. Control device according to one of the preceding claims, characterized in that it is set up in such a way that it only carries out the diagnoses when control interventions in the motor vehicle (1) meet certain requirements.
6. Steuergerät nach Anspruch 5, dadurch gekennzeichnet, dass das Steuergerät (2) der- art eingerichtet ist, dass es die Diagnosen nur durchführt, wenn das Gaspedal und/oder das Bremspedal des Kraftfahrzeugs (1) über ein bestimmtes Maß hinaus betätigt ist.6. Control device according to claim 5, characterized in that the control device (2) is set up in such a way that it only carries out the diagnoses when the accelerator pedal and / or the brake pedal of the motor vehicle (1) is actuated to a certain extent.
7. Steuergerät nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das Steuergerät (2) derart eingerichtet ist, dass es die Diagnosen nur durchführt, wenn das Gaspedal über ein bestimmtes Maß hinaus betätigt ist, und nach Durchführung der Diagnosen eine Beeinflussung des Motors des Kraftfahrzeugs (1) durch Betätigen des Gaspedals nur zulässt, wenn das Gaspedal zuvor in die Leerlaufstellung gebracht worden ist. 7. Control device according to claim 5 or 6, characterized in that the control device (2) is set up in such a way that it only carries out the diagnoses when the accelerator pedal is actuated to a certain extent, and after the diagnoses have been carried out, the motor is influenced Motor vehicle (1) only by pressing the accelerator pedal if the accelerator pedal has previously been brought into the idle position.
8. Verfahren zum Testen eines Kraftfahrzeugs (1) mit einem Steuergerät (2), bei welchem Verfahren eine Messstation (4) an die Steuereinrichtung (2) einen Gruppendiagnoseaufruf aussendet und die Steuereinrichtung (2) daraufhin mehrere von in der Steuereinrich- tung (2) gespeicherter Diagnosen selbstständig durchführt.8. Method for testing a motor vehicle (1) with a control unit (2), in which method a measuring station (4) sends a group diagnosis call to the control device (2) and the control device (2) then several of them in the control device (2 ) carries out stored diagnoses independently.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass das Steuergerät (2) nach einem der Ansprüche 1 bis 7 ausgestaltet ist. 9. The method according to claim 8, characterized in that the control device (2) is designed according to one of claims 1 to 7.
PCT/EP2003/008723 2002-10-24 2003-08-06 Method and control apparatus for performing diagnoses on a motor vehicle WO2004038360A1 (en)

Applications Claiming Priority (2)

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DE10249659.5 2002-10-24
DE2002149659 DE10249659B4 (en) 2002-10-24 2002-10-24 Method and control unit for carrying out diagnoses in a motor vehicle

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Cited By (4)

* Cited by examiner, † Cited by third party
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EP1850108A2 (en) * 2006-04-29 2007-10-31 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Motor control device
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