Control assembly for operating locking system of motor vehicle

Abstract

The invention relates to a control arrangement for operating a motor vehicle locking system having a motor vehicle lock with a lock part latch, a locking pawl and an opening drive, the motor vehicle locking system having an actuating element for detecting an operator action, wherein the control assembly is configured to receive an actuation signal generated by the actuation element at the signal input when an operator action is detected and thus actuate the opening drive, and wherein the control assembly has an electrical energy store, on the basis of which the control assembly operates the opening drive in an emergency mode. According to the invention, the control component measures the current supplied to the actuating element in a diagnostic routine during emergency operation and checks a deviation of the measured current from a predetermined current consumption of the actuating element, and the control component executes a fault routine when determining a deviation from the predetermined current consumption.

Description

Field of the Invention

[0001] The present invention relates to a control component for operating a motor vehicle locking system according to the preamble of claim 1, a motor vehicle lock for a closing element of a motor vehicle according to claim 10, a motor vehicle locking system according to claim 11, and a method for operating a motor vehicle locking system according to the preamble of claim 12. Background Art

[0002] The motor vehicle locking system in question is used to allocate all types of motorized closing elements of a motor vehicle equipped with motor vehicle locks. This particularly includes closing elements such as side doors, rear doors, rear flaps, trunk lids, engine hoods, etc. These closing elements can be designed essentially as swing doors or sliding doors.

[0003] The known prior art (DE 199 04 663 A1) from which the present invention starts relates to the operation of a motor vehicle locking system having a motor vehicle lock, which has a latch and a locking pawl as locking elements. The latch can be brought into a locking position in which the latch engages with a locking member and in which the latch is fixed by the locking pawl. The motor vehicle lock is also equipped with an electric opening drive by means of which the locking pawl can be lifted so that the latch releasing the locking member can be adjusted to its open position.

[0004] A actuating element, for example implemented as a door handle, is provided for detecting an operator action, such as the touching or pulling of the door handle by an operator of the motor vehicle. If an operator action is detected, a manipulation signal obtained by the control component can be generated, and the control component in turn controls the opening drive for this purpose.

[0005] In order to take into account the safety requirements for the voltage supply of such a motor vehicle lock, the control component is equipped with an energy storage device, whereby the electrical energy supply of the opening drive is ensured even in emergency operation, particularly in the case of a failure of the on-board network of the motor vehicle due to a collision.

[0006] The challenge here is that in emergency operation, due to damage to the vehicle locking system, premature discharge of the energy storage device may occur. Summary of the Invention

[0007] The present invention is based on the problem of designing and developing a control component for operating a motor vehicle locking system of this type such that the reliability of the energy supply is further improved in emergency operation.

[0008] The above problem is solved by the features of claim 1.

[0009] Of importance are the following basic considerations, namely, that components of a motor vehicle locking system in emergency operation, in particular due to collisions, various malfunctions can lead to premature discharge of the energy storage. The present invention starts from the fact that the actuating element also has a need for electrical energy supply and is equipped, for example, with sensors for detecting the operator's movements. In emergency operation, the energy supply of the actuating element is also effected via the energy storage by means of the control unit switching on an emergency supply voltage. It has been recognized that defects in the actuating element usually lead to malfunctions of the motor vehicle lock in emergency operation and in particular to premature discharge of the energy storage.

[0010] It is specifically proposed that in the diagnostic routine in emergency operation, the control unit measures the current supplied to the actuating element, checks the deviation of the measured current from a preset current consumption for the actuating element, and the control unit executes a fault routine when determining a deviation from the preset current consumption.

[0011] In a particularly easily implementable design according to claim 2, the measured current is compared with a threshold value of the preset current consumption in order to detect a fault in the actuating element.

[0012] The preset current consumption can generally include a time dependence. In a particularly preferred design according to claims 3 and 4, the occurrence of cyclic current pulses in the measured current is checked.

[0013] Preferred variants of the fault routine are described in claims 5 to 7. In particular here, by means of the control unit, the reset of the actuating element can be effected by interrupting the energy supply in emergency operation.

[0014] The preferred design according to claims 8 and 9 also relates to measuring the current supplied to the actuating element. Here, it is particularly preferred to use a series resistor at the signal input in order to implement current measurement with less expense.

[0015] According to another teaching according to claim 10, which has independent significance, a motor vehicle lock for a closure element of a motor vehicle is claimed. The motor vehicle lock has a control unit according to the proposed one for controlling an opening drive. All the explanations for the proposed control unit can be referred to.

[0016] According to another teaching according to claim 11, which also has independent significance, a motor vehicle locking system is claimed, which has a motor vehicle lock with an opening drive, an actuating element for detecting the operator's movements and a control unit according to the proposed one for controlling the opening drive. Here, the control unit can also be part of the control apparatus of the motor vehicle locking system, for example a door control apparatus or a flap control apparatus. All the explanations for the proposed control unit can also be referred to.

[0017] In another design, the motor vehicle locking system includes the proposed motor vehicle lock, with reference to the relevant explanations in this regard.

[0018] According to another teaching which is also of independent significance in accordance with claim 12, a method for operating a motor vehicle locking system in the case of using a control component is claimed. Here, it is important that the control component measures the current supplied to the actuating element in a diagnostic routine during emergency operation, checks the deviation of the measured current from a preset current consumption for the actuating element, and the control component executes a fault routine when determining the deviation from the preset current consumption. All explanations regarding the proposed control component, motor vehicle lock, and proposed motor vehicle locking system can be referred to. Description of the Drawings

[0019] The present invention will be explained in more detail below with reference to the drawings which only show embodiments. In the drawings:

[0020] Figure 1 The closure element with the motor vehicle locking system and the motor vehicle lock is shown in respective perspective views.

[0021] Figure 2 A schematic view of the proposed control component, the actuating element, and the opening drive is shown, and

[0022] Figure 3 a), b), c) show exemplary temporal correlations of the measured current. Detailed Description of the Preferred Embodiment

[0023] The embodiment shown in the drawings and preferred in this regard relates to a control component 1 for operating a motor vehicle locking system 2. The motor vehicle locking system 2 is assigned to a closure element 3 of a motor vehicle 4, where the closure element 3 is Figure 1 exemplarily shown as a side door. However, these explanations also apply to other closure elements of the motor vehicle 4, especially those listed in the introduction.

[0024] The motor vehicle locking system 2 has a motor vehicle lock 5 which is equipped with a locking part latch 6 and a locking pawl 7 as well as an opening drive 8. The motor vehicle lock 5 is Figure 1 shown in a partially disassembled perspective view and is equipped with a pivotable latch 6 for engagement with a locking part (not shown) and at least one locking pawl 7 assigned to the latch 6. The locking part can be a locking bow (Schlieβbügel, sometimes also called a locking catch), a locking bolt, etc. For example, the motor vehicle lock 5 is arranged at the closure element 3, while the locking part is arranged in a body-fixed manner at the motor vehicle 4.

[0025] The locking pawl 7 locks the opening of the latch 6 in the retracted position and releases the latch 6 in the raised position. The locking pawl 7 can be part of a locking pawl system, which can be brought into a locking state (not shown), in which the locking pawl system holds the latch 6 in the locked position. The locking pawl 7 can be raised motorized by means of an opening drive 8, wherein for example the locking pawl system can be brought into the open state motorized by means of the opening drive 8, whereby the locking pawl system releases the latch 6. Here, the electric drive motor 9 of the opening drive 8 is connected to the locking pawl 7, in particular the locking pawl system, via the drive train 10 of the opening drive 8.

[0026] The motor vehicle locking system 2 has an operating element 11 for detecting the operator's action. The operating element 11 can be a door handle, for example an inner door handle 12 and / or an outer door handle 13. The operator's action can be given, for example, by touching, manually adjusting the operating element 11 and / or by non-touch operation (for example by a gesture performed by the operator of the motor vehicle 4). The operating element 11 is equipped, for example, with sensors 14 such as buttons, cameras, etc. in order to detect the operator's action.

[0027] The operating element 11 is also supplied with electrical energy to detect the operator's action. For example, the sensor 14 is designed as a capacitive sensor 14, which requires a supply voltage to operate. Here and preferably, as Figure 2 schematically reproduced, the operating element 11 has a sensor controller 15 such as a microcontroller for controlling the sensor 14, the operation of which requires a supply voltage. Alternatively or additionally, the sensor controller 15 can query the operator's electronic key, for example, via radio operation, UWB, BLE, etc., which also generates an energy requirement.

[0028] In normal operation, the supply voltage can be provided for the operating element 11 via the vehicle electrical system 16, which is operated in particular by the central battery of the motor vehicle 4. The central battery is preferably a battery that provides the electrical energy required for starting the motor vehicle 4 and / or for the driving operation of the motor vehicle 4.

[0029] The control unit 1 is configured to obtain, at the signal input, an actuation signal generated by the actuating element 11 when an operator action is detected and thus to control the opening drive 8. The actuation signal can be generated by means of a sensor controller 15. Here, the control device 17 can determine the triggering of the opening drive 8, in particular depending on the signal level at the signal input, by means of an existing locking state (such as unlocked, locked, anti-theft and / or child protection). In the case of a valid actuation, for example when touching the outside door handle 13 in the unlocked locking state, the control device 17 causes the locking pawl 7 to be lifted in normal operation. The opening drive 8 can also be operated in normal operation based on the energy supply from the vehicle electrical system 16. Here and preferably, the control unit 1 operates a power stage 18 for the opening drive 8, for example an H-bridge, for supplying power to the drive motor 9 of the opening drive 8.

[0030] In emergency operation, for example in the event of a collision or when the central battery is substantially discharged, the supply via the vehicle electrical system 16 cannot be used safely in contrast. The control unit 1 has an electrical energy store 19, based on which the control unit 1 operates the opening drive 8 in emergency operation. Thus, even in the event of a fault in the vehicle electrical system 16, it is possible to open the motor vehicle lock 5. The control unit 1 also connects the energy store 19 to the actuating element 11 in emergency operation to provide an emergency supply voltage. The emergency supply voltage is preferably used to meet the mentioned energy requirements of the actuating element 11 and, for example, the sensor 14 is also used even in emergency operation. Accordingly, the actuating element 11 can preferably be used in the same way in emergency operation as in normal operation.

[0031] The energy store 19 is preferably designed to be rechargeable. In Figure 2 view, the control unit 1 has a charging circuit 20 by means of which the energy store 19 is charged in normal operation based on the vehicle electrical system 16. The charging circuit 20 can in particular have a charging controller for achieving the target charge state of the energy store 19.

[0032] The energy store 19 preferably has at least one capacitor 21. Here, the emergency supply voltage is provided based on the capacitor voltage of the at least one capacitor 21. The capacitor 21 is preferably an electric double layer capacitor. The electric double layer capacitor has an electrochemical double layer, which is also known as the "Helmholtz layer". Such an electric double layer capacitor is also referred to as a "supercapacitor", "supercap", "ultracap", etc. In addition to the at least one capacitor 21, the energy store 19 can also have further storage elements, such as primary and / or secondary batteries.

[0033] When using multiple capacitors, the capacitors can basically be connected in series and / or in parallel. In a particularly preferred design, the energy storage 19 has a single capacitor 21, in particular a single electric double-layer capacitor. The emergency supply voltage for actuating element 11 can be lower than the voltage provided for use by the activation drive 8. For example, a boost converter 22 is provided downstream of the energy storage 19, which is configured to boost the energy storage voltage of the energy storage 19 (here the capacitor voltage) to the voltage for the activation drive 8. The emergency supply voltage can for example be formed by the capacitor voltage itself, while the activation drive 8 receives the boosted voltage. The output voltage of the boost converter 22 can also be used as the emergency supply voltage.

[0034] Here, the activation of the energy storage 19 is achieved by applying the emergency supply voltage continuously, preferably during emergency operation, via the energy storage 19 to the voltage output of the control assembly 1. In the assembled state of the motor vehicle locking system 2, the actuating element 11 is connected to the voltage output. Preferably, the sensor controller 15 receives the emergency supply voltage, which in turn operates the sensor 14 based on the emergency supply voltage to detect the operator's action.

[0035] Now, it is important that the control assembly 1 measures the current supplied to the actuating element 11 during the diagnostic routine in emergency operation, checks the deviation of the measured current from the preset current consumption for the actuating element 11, and the control assembly 1 executes a fault routine when a deviation from the preset current consumption is determined.

[0036] The current supplied to the actuating element 11 can be measured indirectly, for example in the usual way via voltage measurement. As long as reference is made here to the measured current and the current value, it can also be a measurement variable representing the actual amount of current accordingly.

[0037] The preset current consumption is a predefined parameter regarding whether the current supplied to the actuating element 11 should be considered permissible. The preset current consumption can include a range of permissible current values. Additionally, the preset current consumption can also relate to values derived from the measured current, such as an average value, etc.

[0038] Using the check for deviation, the control assembly 1 evaluates whether the measured current corresponds to the preset current consumption. If the check shows no deviation, then preferably, no measures are taken by the control assembly 1, and the emergency operation continues with the energy supply to the actuating element 11 via the energy storage 19. In contrast, when a deviation is determined, a fault routine is triggered, which can include measures for eliminating the error state of the actuating element 11 and protecting the energy storage 19 from discharging.

[0039] Here and preferably, the control assembly 1 has a control unit 23, in particular a microcontroller, for actuating the opening drive 8. As Figure 2 shown, the control unit 23 can be configured to execute a diagnostic routine. By means of the control unit 23, the measurement of the current I supplied to the actuating element 11 can be carried out.

[0040] Preferably, it is set that a preset current consumption is defined via at least one threshold value for the measured current, and the control assembly 1 checks the threshold value for exceeding or falling below by the measured current as a deviation. Preferably, at least one upper limit for the current consumption is preset to be higher than the threshold value, and at least one lower limit for the current consumption is preset to be higher than the threshold value.

[0041] In one design, the time average value of the measured current (e.g., the effective current value determined via the root mean square) is compared with at least one threshold value. The comparison with the upper limit is particularly preferred because in this way an error state of the actuating element 11 can be identified, which leads to premature discharge of the energy storage 19.

[0042] In another design, it is set that the preset current consumption includes the time correlation of the measured current. Here, the compliance with the mentioned threshold values can also be checked in time periods. In particular, a cyclic operation of the actuating element 11 is set, in which the sensor 14 is cyclically interrogated in a polling manner, such that current pulses are expected in the measured current. The actuating element 11 can also have an approximately constant current demand, where, for example, the sensor controller 15 runs continuously.

[0043] Here and preferably, it is set that the preset current consumption includes cyclic current pulses and the control assembly 1 checks the deviation based on the measured current pulses. Figure 3 a) Exemplarily shows the measured current value I depending on time t in the functional actuating element 11 in cyclic operation. For example, as the start and end time points of the current pulse are identified in the measured current value according to a further threshold value, and the current value is checked over time periods on and / or between the current pulses.

[0044] In contrast, Figure 3 b) Shows a constant, relatively high measured current, which does not correspond to the preset current consumption with cyclic current pulses and thus indicates a fault, for example indicating the continuous operation of the sensor 14 instead of polling. Figure 3 c) Shows a constant, relatively low measured current, which also does not correspond to the preset current consumption with cyclic current pulses and thus indicates a fault, which is, for example, attributed to the lack of operation of the sensor 14.

[0045] The control component 1 can compare at least one threshold of a preset current consumption with the measured current on the current pulse. Here, for example, the current value at each time point on the current pulse or the average current on the current pulse can be used. The current demand given by the polling of the sensor 14 can be evaluated via the measured current on the current pulse.

[0046] The control component 1 can compare at least one threshold of a preset current consumption with the measured current between current pulses. Here, for example, the current value at each time point between current pulses or the average current between current pulses can be used. For example, a continuous current demand caused by the continuous operation of the sensor controller 15 can be evaluated via the measured current on the current pulse.

[0047] In a further design, it is provided that the control component 1 checks the cycle duration of the measured current pulse, the pulse duration of the measured current pulse, and / or the duration between the measured current pulses according to a preset current consumption.

[0048] This cycle duration represents the duration T from the time point when the current pulse starts until the time point when the subsequent current pulse starts. The pulse duration represents the duration Δt from the time point when the current pulse starts until the time point when the same current pulse ends. The duration between the measured current pulses corresponds to the duration T - Δt from the time point when the current pulse ends to the time point when the subsequent current pulse starts. The start and / or end of the current pulse can be determined via a preset pulse criterion, for example, by exceeding a current threshold, via the time derivative of the measured current value, etc.

[0049] Furthermore, here and preferably, it is provided that the control component 1 causes a reset of the actuating element 11 in a fault routine. The reset is preferably a restart process of the sensor controller 15.

[0050] In another design, it is provided that the control component 1 continues the diagnostic routine after the reset, and in the case of further determined deviations, a fault routine is caused by a further reset. The possibility of overcoming a fault of the actuating element 11 is increased via multiple resets.

[0051] The reset can be triggered, for example, via a reset signal generated by the control component 1, which is transmitted to the sensor controller 15. However, in another design, it is provided that the control component 1 temporarily interrupts the supply of the emergency supply voltage to the actuating element 11 in order to reset the actuating element 11. For example, the interruption is carried out for a preset duration and then the emergency supply voltage is switched on again. This duration can be preset such that the sensor controller 15 automatically causes a reset.

[0052] In another design, it is arranged that the control component 1 ends the connection of the emergency supply voltage to the actuating element 11 in a fault routine. In particular, this is done after a reset, preferably after multiple resets. By (permanently) ending this, discharge of the energy storage 19 can be prevented. Preferably, it is arranged such that, in addition to the subsequently deactivated actuating element 11, there is also another possibility for the operator to open the motor vehicle lock 5. For this purpose, for example, a mechanical triggering chain for the motor vehicle lock 5 and / or another actuating element 11 can be provided.

[0053] In another design, the control component 1 can control the opening drive 8 in a fault routine. Accordingly, in the event of a fault of the actuating element 11, the motor vehicle lock 5 is opened. This can in particular be provided for a motor vehicle lock 5 without a mechanical triggering chain and thus without mechanical redundancy, such that it is still possible to open the closing element 3. The control of the opening drive 8 can be associated with additional conditions, for example with the locked state and / or with the motor vehicle 4 not being in driving operation.

[0054] Furthermore, and preferably, it is arranged that the control component 1 supplies the emergency supply voltage to the actuating element 11 via a signal input. Preferably, the control component 1 measures the current supplied to the actuating element 11 by means of a series resistor of the signal input. This series resistor is in particular the pull-up resistor of the signal input.

[0055] In addition, it can be arranged that the control component 1 measures the current supplied to the actuating element 11 by means of a shunt and / or a current sensor implemented as an integrated circuit.

[0056] According to another teaching, a motor vehicle lock 5 for a closing element 3 of a motor vehicle 4 is proposed, wherein the motor vehicle lock 5 is equipped with a locking part bolt 6 and a locking pawl 7 as well as an opening drive 8, wherein the bolt 6 can be kept engaged with a locking part, wherein the locking pawl 7 locks the opening of the bolt 6 in the retracted position and releases the bolt 6 in the raised position, wherein the locking pawl 7 can be raised motor-driven by means of the opening drive 8, and the motor vehicle lock 5 also has a control component 1 according to the proposed solution for controlling the opening drive 8. Particularly preferably, the control component 1 according to the proposed solution is integrated with the energy storage 19 in the housing 24 of the motor vehicle lock 5, which housing also houses the locking part. All the statements regarding the control component 1 according to the proposed solution can be referred to.

[0057] A motor vehicle locking system 2 is proposed, which has a motor vehicle lock 5 with an opening drive 8, an operating element 11 for detecting the operator's movement, and a control assembly 1 for controlling the opening drive 8, which control assembly is designed according to any one of claims 1 to 8. As an alternative to the integration of the control assembly 1 already mentioned into the motor vehicle lock 5, it is conceivable here that the control assembly 1 is part of a separate control device 17 for the motor vehicle lock 5. Examples of such a control device 17 are a flap control device and a door control device, which can also assume other electronic functions in the closure element 3. All the explanations for the proposed control assembly 1 and the proposed motor vehicle lock 5 can be referred to.

[0058] According to another teaching, a method for operating a motor vehicle locking system 2 is proposed, which motor vehicle locking system 2 has a motor vehicle lock 5 with a lock part bolt 6 and a locking pawl 7 and an opening drive 8, where the bolt 6 can be kept engaged with the locking part, and the locking pawl 7 locks the opening of the bolt 6 in the retracted position and releases the bolt 6 in the raised position, where the locking pawl 7 can be raised motor-driven by means of the opening drive 8, where the motor vehicle locking system 2 has an operating element 11 for detecting the operator's movement, where the control assembly 1 is set up to obtain at a signal input the operating signal generated by the operating element 11 when the operator's movement is detected and thus to control the opening drive 8, where the control assembly 1 has an electrical energy store 19, based on which the control assembly 1 operates the opening drive 8 in an emergency operation, and where the control assembly 1 switches on the energy store 19 for the operating element 11 in an emergency operation to provide an emergency supply voltage.

[0059] It is hereby set that the control assembly 1 measures the current supplied to the operating element 11 in a diagnostic routine during an emergency operation, checks the deviation of the measured current from a preset current consumption for the operating element 11, and the control assembly 1 executes a fault routine when determining the deviation from the preset current consumption. All the explanations for the proposed control assembly 1, the motor vehicle lock 5 and the proposed motor vehicle locking system 2 can be referred to.

Claims

1. A control component for operating a motor vehicle locking system (2), the motor vehicle locking system (2) having a motor vehicle lock (5), the motor vehicle lock having a lock part latch (6) and a locking pawl (7) and having an opening drive (8), wherein the latch (6) can be kept engaged with a locking part, and the locking pawl (7) locks the opening of the latch (6) in the retracted position and releases the latch (6) in the raised position, wherein the locking pawl (7) can be raised motor-driven by means of the opening drive (8), Among them, the motor vehicle locking system (2) having an operating element (11) for detecting an operator action, wherein the control component (1) is set up to obtain at a signal input an operating signal generated by the operating element (11) when the operator action is detected and thus to control the opening drive (8), wherein the control component (1) has an electrical energy storage (19), based on which the control component (1) operates the opening drive (8) in an emergency operation, and wherein the control component (1) connects the energy storage (19) for the operating element (11) in the emergency operation to provide an emergency supply voltage, characterized in that, the control component (1) measures the current supplied to the operating element (11) in a diagnostic routine in the emergency operation and checks the deviation of the measured current from a preset current consumption for the operating element (11), and the control component (1) executes a fault routine when determining the deviation from the preset current consumption.

2. The control component according to claim 1, characterized in that, The preset current consumption is defined via at least one threshold value for the measured current, and the control component (1) checks the exceeding or falling below of the threshold value by the measured current as a deviation.

3. The control component according to claim 1 or 2, characterized in that, The preset current consumption comprises cyclic current pulses, and the control component (1) checks the deviation according to the measured current pulses. Preferably, the control component (1) compares at least one threshold value of the preset current consumption with the measured current on the current pulse, and / or the control component (1) compares at least one threshold value of the preset current consumption with the measured current between the current pulses.

4. The control component according to claim 3, characterized in that, The control component (1) checks the period duration of the measured current pulses, the pulse duration of the measured current pulses and / or the duration between the measured current pulses according to the preset current consumption.

5. The control component according to any one of the preceding claims, characterized in that, The control component (1) causes a reset of the operating element (11) in the fault routine. Preferably, the control component (1) continues the diagnostic routine after the reset and causes a fault routine with another reset in the case of a further determined deviation.

6. The control component according to claim 5, characterized in that The control component (1) temporarily interrupts the connection of the emergency supply voltage to the operating element (11) in order to reset the operating element (11).

7. The control component according to any one of the preceding claims, characterized in that, The control component (1) ends the connection of the emergency supply voltage to the actuating element (11) during the fault routine, and / or the control component (1) controls the opening drive (8) during the fault routine.

8. The control component according to any one of the preceding claims, characterized in that, The control component (1) supplies the emergency supply voltage to the actuating element (11) via the signal input. Preferably, the control component (1) measures the current supplied to the actuating element (11) by means of a series resistor at the signal input.

9. The control component according to any one of the preceding claims, characterized in that The control component (1) measures the current supplied to the actuating element (11) by means of a shunt and / or a current sensor implemented as an integrated circuit.

10. A motor vehicle lock having a locking component bolt (6) and a locking pawl (7) and an opening drive (8), wherein the bolt (6) can be kept engaged with a locking part, wherein the locking pawl (7) locks the opening of the bolt (6) in the retracted position and releases the bolt (6) in the raised position, wherein the locking pawl (7) can be raised motorized by means of the opening drive (8), and the motor vehicle lock (5) further having a control component (1) designed according to any one of claims 1 to 9 for controlling the opening drive (8).

11. A motor vehicle locking system having a motor vehicle lock (5) with an opening drive (8), an actuating element (11) for detecting an operator action, and a control component (1) designed according to any one of claims 1 to 9 for controlling the opening drive (8).

12. A method for operating a motor vehicle locking system (2) having a motor vehicle lock (5) having a locking component bolt (6) and a locking pawl (7) and an opening drive (8), wherein the bolt (6) can be kept engaged with a locking part, and the locking pawl (7) locks the opening of the bolt (6) in the retracted position and releases the bolt (6) in the raised position, wherein the locking pawl (7) can be raised motorized by means of the opening drive (8), Among them, The motor vehicle locking system (2) having an actuating element (11) for detecting an operator action, wherein the control component (1) is set up to obtain an actuation signal generated by the actuating element (11) at the signal input upon detection of the operator action and thus control the opening drive (8), wherein the control component (1) has an electrical energy storage (19), based on which the control component (1) operates the opening drive (8) in an emergency operation, and wherein the control component (1) connects the energy storage (19) to provide an emergency supply voltage to the actuating element (11) in the emergency operation, characterized in that The control component (1) measures the current supplied to the actuating element (11) during a diagnostic routine in emergency operation, checks the deviation of the measured current from a preset current consumption for the actuating element (11), and the control component (1) executes a fault routine when determining a deviation from the preset current consumption.

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