Method and device for functionally testing cable harness, in particular high-voltage cable harness

Abstract

The invention relates to a method and a device for functionally testing a cable harness, in particular a high-voltage cable harness, comprising: a testing system (2) which can be equipped with a cable harness (A, B, C) having a plurality of components to be tested, the testing system (2) having at least one testing device (6, 7), by means of the at least one testing device, different, preferably automatically operated functional tests, in particular electrical and / or sealing tests as functional tests, can be carried out for the components of the cable harness (A, B, C) to be tested. According to the invention, the test system (2) comprises several test sites preferably having a substantially identical design, which test sites are sequentially equipped, in particular by the same operator, with the cable bundles (A, B, C) in order to at least temporarily perform at least one functional test simultaneously on several cable bundles (A, B, C).

Description

Technical Field

[0001] The present invention relates to a method and a device for performing functional testing on cable harnesses, in particular high voltage cable harnesses. Background Art

[0002] When several individual cables, via which energy or information is transmitted, are bundled together, it is called a cable harness. Such cable harnesses are always used when many individual cables are needed, as is the case with, for example, onboard networks of aircraft, ships, railways, commercial vehicles (trucks, buses, etc.), and in particular in automotive construction. Low-voltage cable harnesses are generally used for voltage levels below 60V, while high-voltage cable harnesses are used for voltage levels above 60V. For example, the latter (high-voltage cable harness) includes charging cables for electric vehicles (E-vehicles) that connect the charging socket of a charging station with the on-board charging system. As another example, high-voltage cable harnesses are used as traction cables to connect high-voltage batteries to power electronics. Therefore, for such cable harnesses, reliable electrical contact is essential to ensure its electrical functionality, which places extensive requirements on the electrical connectors of the cable harness in particular. For this purpose, the cable harnesses are subject to electrical functional tests to ensure that they meet all the required electrical properties.

[0003] In addition, the cable harness must also be sealed against dust and water, because the penetration of these dirt and moisture may cause failures in the electrical connections and the connected electrical devices. Therefore, the sealing test of the connectors of the cable harness is particularly important.

[0004] Furthermore, cable harnesses, for example in vehicles, often have to be tightly threaded through openings provided in the wall in order to seal the openings against the ingress of moisture and dirt. For example, such sealing is achieved by means of lead-through components, such as grommets, which are often made of an elastomeric material and are molded directly onto the cable harness. For example, during the manufacture of such grommets as lead-through components, tolerance-related misalignments can occur, or cracks can develop, which can impair the sealing function of the grommets. Therefore, in practice, such lead-through components of cable harnesses also have to be tested for lead-through sealing.

[0005] According to the prior art, these exemplary functional tests for high voltage cable bundles (particularly for connector sealing, penetration sealing, electrical performance) are performed by separate test stations, such as Figure 1As shown schematically, in these test stations, separate test stations for connector sealing tests on the connectors of the cable bundle (left), separate test stations for electrical tests on the connectors of the cable bundle (center), and separate stations for penetration sealing tests on penetration components (such as grommets) of the cable bundle (right) are arranged. Different operators work at each test station and perform separate functional tests on the cable bundle. Depending on the type of test, each of these automatically performed functional tests takes 20 to 60 seconds, during which the operator is not active. In short, this leads to relatively high time, personnel and costs when performing functional tests. Summary of the invention

[0006] The object of the present invention is to provide a method and a device for functional testing of cable harnesses, in particular high-voltage cable harnesses, by which the time, personnel and costs required for the necessary functional testing can be significantly reduced in a technically simple and functionally reliable manner.

[0007] This object is solved by the independent claims. Preferred embodiments are specified in the dependent claims, the description and the drawings.

[0008] The invention relates to a method for functional testing of a cable harness, in particular a high-voltage cable harness, comprising performing said functional test using a test system, said test system being able to be equipped with a cable harness, said cable harness having a plurality of components to be tested, and said test system having at least one test device, by means of which different (preferably automatically run) functional tests can be performed on the components to be tested of the cable harness, in particular electrical tests and / or sealing tests as functional tests. According to the invention, the test system comprises several test sites, preferably of substantially identical design, which are equipped with cable harnesses in particular sequentially by the same operator, so that at least temporarily at least one functional test is performed on some of the cable harnesses simultaneously.

[0009] Thus, the time during which an operator is inactive because of the automatic functional test at a test site can be used to equip another test site with a cable bundle to be tested, which significantly reduces the time, personnel and costs involved in performing functional tests. In addition, this type of process management results in an advantageously compact combination of several test devices, for example in a single test device or test board, so that shorter distances between individual test stations can be achieved and less installation space is required.

[0010] According to a particularly preferred specific embodiment, at the start of a functional test of several cable bundles, in a first step, a first cable bundle to be tested is arranged in a first test site and a functional test for the first cable bundle is started, thereby performing at least one functional test on the first cable bundle. During this functional test of the first cable bundle, a second cable bundle to be tested is preferably arranged in a second test site by the same operator and a functional test for the second cable bundle is started. As a result, at least one functional test is also performed on the first cable bundle, so that, at least temporarily, at least one functional test is performed simultaneously on the first cable bundle and the second cable bundle. By means of this specific process management with two test sites, the above advantages are achieved to a certain extent and it is ensured that the idle time of the operator is greatly reduced, which, in combination with a compact and functionally reliable test device and test procedure, saves the required time and costs.

[0011] A particularly advantageous method is a method in which, during the functional test of the second cable bundle, the third cable bundle to be tested is arranged in a third test site and the functional test for the third cable bundle is started, thereby performing at least one functional test on the third cable bundle. In this regard, at least temporarily, at least one functional test is performed on the second and third cable bundles at the same time, and the first cable bundle may also be functionally tested. With such a third test site, the working time of the operator can be organized more effectively, so the above advantages certainly also apply here. In principle, a fourth, fifth or more test sites can also be set, wherein the number of test sites to be set operated by the single operator can be determined according to the amount of time required for the single operator to perform the various tasks associated with each required functional test. According to experience, the longer the functional test of the complete cable bundle takes, the more test sites can be set in theory, because the operator has more time to be inactive. Other parameters that affect the number of test sites are, for example, any reconnection work that may be required during the functional test needs to be performed on the individual cable bundles, which is only an example. It also serves the purpose that, according to a particularly preferred method, after the functional test for each cable bundle has been carried out, each cable bundle is removed from the associated test site and can then be equipped with a new cable bundle again. In this respect, in practice, test systems have been verified which have three or four, up to five, test sites and can be operated by one operator.

[0012] In principle, there are various possibilities for technical function tests of cable bundles, but among them, the electrical function tests and the sealing tests mentioned at the beginning are particularly important. Therefore, according to a particularly preferred method, at least one electrical test device is provided for performing at least one electrical function test, and at least one sealing test device is provided for performing at least one sealing test as a function test. This means that at least one of these function tests can be performed at least temporarily simultaneously on several cable bundles.

[0013] According to a particularly preferred embodiment, several cable bundles to be tested, preferably formed by cable bundles of substantially identical construction, advantageously each have several connectors and at least one penetration component (e.g. a grommet) as components to be tested. In this case, at least one electrical test device has a plug-in connection for a connector of the cable bundle whose electrical properties are to be tested, and the sealing test device has: a plug-in connection for a connector of the cable bundle whose connector sealing is to be tested; and at least one penetration connection for a penetration component of the cable bundle whose penetration sealing is to be tested. This ensures that at least one of these functional tests can be performed on several cable bundles at least temporarily simultaneously.

[0014] For a particularly compact design of the test system, a plug-in connection for the electrical test device can be provided and simultaneously a plug-in connection for the sealing test device can be formed, so that the cable bundle can be subjected to a connector sealing test at least temporarily at the same time as at least one electrical functional test. For example, such a connector sealing test can be a pneumatic test, in which the connector is pressurized with compressed air (negative or positive pressure) and the pressure difference or the volume flow is measured. This makes it possible to achieve an advantageous component and function integration, which is particularly conducive to the desired compact design. In addition, and this is a particular advantage of this embodiment, each cable bundle and all its components to be tested can be connected to the associated test device at the beginning of the functional test, so that all functional tests on the cable bundle can be run in parallel or one after another, and the cable bundle is not removed until all functional tests have been carried out on the components to be tested.

[0015] Alternatively, in the case of separate plug connections on the electrical test device and the sealing test device, provision can be made for the connector sealing test of the specific cable bundle to be carried out with a time delay, preferably after at least one electrical function test of the specific cable bundle. The latter (case of separate plug connections) is particularly advantageous if, for example, technical difficulties may arise with the combined plug connection of the electrical test device and the sealing test device due to a specific technical design of the cable bundle.

[0016] In this particular method using at least one electrical test device and at least one sealing test device, according to a particularly advantageous particular method, it can be provided that, for example, at the beginning of a functional test, in a first step, a first cable bundle to be tested is arranged in a first test site, a connector of the first cable bundle is connected to the plug-in connection of the electrical test device and a penetration assembly of the first cable bundle is connected to the penetration connection of the sealing test device. After the first cable bundle has been connected in this way, an electrical test (especially a low voltage test and a high voltage test as a sequence of electrical tests) and a penetration sealing test can be performed at least temporarily at the same time on the first cable bundle. During the execution of the electrical test and / or penetration sealing test of the first cable bundle, which is preferably automatically run, a second cable bundle to be tested is arranged in a second test site, wherein the connector of the second cable bundle is connected to the plug-in connection of the electrical test device, and the penetration assembly of the second cable bundle is connected to the penetration connection of the sealing test device. After the second cable bundle has been connected in this way, an electrical test (especially a low voltage test and a high voltage test as a sequence) and a penetration sealing test can be performed at least temporarily at the same time on the second cable bundle. Preferably, the electrical test and / or the penetration seal test of the second cable harness is also carried out at least temporarily simultaneously with the functional test (e.g. connector seal test) of the first cable harness. The advantages resulting from this have already been explained in detail in connection with the general procedure for the functional test of the two cable harnesses. They apply here in a similar manner.

[0017] This also applies to another preferred specific embodiment, in which, while the second cable bundle is being electrically tested and / or penetrated and sealed, a third cable bundle to be tested is arranged in a third test site, the connector of the third cable bundle is connected to the plug-in connection of the electrical testing device and the penetration assembly of the third cable bundle is connected to the penetration connection of the sealing test device. After the third cable bundle has been connected in this way, the electrical test (in particular the sequential low voltage test and the high voltage test) and the penetration seal test of the third cable bundle can be carried out at least temporarily at the same time. Here, it is also preferred that the electrical test and / or the penetration seal test of the third cable bundle is also carried out at least temporarily at the same time as the functional test (e.g. the connector seal test) of the second cable bundle, and if necessary, even at least temporarily at the same time as the functional test of the first cable bundle and the second cable bundle.

[0018] The electrical test is particularly preferred as an electrical function test of the cable harness. In particular, in the case of a high-voltage cable harness, such an electrical test is preferably performed as a sequential low-voltage test and a high-voltage test.

[0019] More specifically, low voltage testing includes, for example:

[0020] - Simple connection testing of low voltage and high voltage cable bundles;

[0021] - Only tested for advanced four-wire connections of high voltage cable bundles and for shielded high voltage cable bundles

[0022] shielded;

[0023] - Short circuit test to avoid wrong connection;

[0024] - Other functional tests on electronic components (such as LEDs, communication protocols, resistors, actuators).

[0025] Examples of high voltage tests include:

[0026] -Dielectric breakdown strength testing with various operating voltages (e.g. 4.3kV DC);

[0027] -1kV DC insulation resistance test.

[0028] In this scenario, it is particularly preferred that the electrical test is part of a test procedure which can be performed by means of an electrical testing device, by means of which in a first test step it is determined whether the high-voltage cable bundle to be tested meets the performance requirements for testing using a low-voltage test, and by which in a second test step (temporally after the first test step) it is determined whether the cable bundle to be tested meets the performance requirements for testing using a high-voltage test.

[0029] According to another particularly preferred embodiment, a storage device is provided, which is coupled to at least one test device for transmitting data acquired by at least one test device and / or for transmitting data to at least one test device. This can be done by wire and / or wirelessly. Using such a storage device (which can be designed as a database, for example), all test results and predefined inspection or test parameters can be stored. This enables seamless recording of functional tests.

[0030] It is further preferred that each test site has a detection device by means of which the cable bundle to be tested can be identified. For example, such a detection device can be an optical detection device (such as a camera) which identifies the cable bundle to be tested by means of a scanner function. Of course, RFID technology can also be used at any time. Then, by means of the detection device, an identification signal is preferably generated, which can be sent to a storage device, in which the start of the test of the individual cable bundles newly arranged in the test site and to be tested is registered. RFID is particularly advantageous because in the automotive environment, as a standard, the test data must be stored for 15 years, so that at least for each individually identifiable test item, a server somewhere always has the results ready. This means that if a customer has questions about the cable bundle, the test data can be retrieved later. This is why each cable bundle of the test station preferably has a barcode or RFID with a unique ID, to which all data are assigned.

[0031] Furthermore, according to a particularly preferred embodiment, it can be arranged that, after all functional tests provided for the cable bundle are completed, the test and / or inspection results of the cable bundle are stored in the storage device, and then the cable bundle is taken out of the test site. For example, this can be achieved by taking the cable bundle out of the test site and placing a new cable bundle to be tested in the test site.

[0032] The above-mentioned object is also solved by a device for carrying out a method for functional testing of a cable bundle, in particular a high-voltage cable bundle, the device comprising: a test system, the test system can be equipped with a cable bundle, the cable bundle having a plurality of components to be tested, the test system comprising at least one test device, by means of which different (preferably automatically run) functional tests can be carried out on the components to be tested of the cable bundle, in particular electrical tests and / or sealing tests as functional tests. According to the invention, the test system comprises a plurality of test sites, preferably of substantially identical design, the test sites being equipped with cable bundles in particular sequentially by the same operator, the test system being designed and configured to carry out at least one functional test on several cable bundles at least temporarily simultaneously.

[0033] The advantages resulting from the device are the same as those of the method described above and therefore apply here in a similar manner. In this respect, reference is made to the explanations given above in order to avoid repetitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the following, advantageous embodiments of the invention will be explained in more detail by way of example with reference to the accompanying drawing. It shows:

[0035] Figure 1 According to the prior art, the cable harness is functionally tested at a separate testing station.

[0036] Figure 2a The present invention provides a schematic and exemplary structure of an apparatus according to the invention for carrying out the method according to the invention for functional testing of a cable harness, in particular a high-voltage cable harness, in connection with a first method step of a functional test of several cable harnesses according to the invention.

[0037] Figure 2b is related to the second method step of the functional testing of several cable harnesses according to the invention corresponding to Figure 2a settings.

[0038] Figure 2c is related to the third method step of the functional testing of several cable harnesses according to the invention corresponding to Figure 2a and Figure 2b settings.

[0039] Figure 3 is a schematic, chronologically structured flow chart of an exemplary method sequence for functional testing of several cable harnesses according to the invention. DETAILED DESCRIPTION

[0040] Figure 2a Only an exemplary and schematic structure of an apparatus 1 for a method for functional testing a cable harness is shown. The apparatus 1 has a test system 2 which in this example has three test sites, namely a first test site 3 , a second test site 4 and a third test site 5 .

[0041] The test system 2 further comprises an electrical test device 6 equipped with a test equipment 8 for low voltage test and a test equipment 9 for high voltage test and a sealing test device 7. The sealing test device 7 is equipped with a test equipment 10 for connector sealing test and a test equipment 11 for penetration sealing test.

[0042] The electrical test device 6 and the sealing test device 7 can be part of a common test device or test panel, for example.

[0043] like Figure 2aAs shown, the electrical test device 6 includes a matrix switching circuit (matrix) 12, which has plug-in connections for connectors of the cable bundle for testing the electrical performance of the connectors. In addition, the sealing test device 7 (also shown in the form of a matrix switching circuit 13) has a plug-in connection and a penetration connection, the plug-in connection is used for the connector of the cable bundle whose connector seal is to be tested, and the penetration connection is used for the penetration component of the cable bundle whose penetration seal is to be tested. For example, the penetration component can be a hole ring. For example, for electrical testing, a relay box (relay matrix switching circuit) is used as a matrix switching circuit. For sealing testing, for example, valves can be used similarly to switch between test devices.

[0044] Furthermore, the device 1 comprises a memory device 14 which is coupled via the testing devices 6 , 7 in a signal-transmitting manner for transmitting data acquired by the testing devices 6 , 7 and / or for transmitting data to the testing devices 6 , 7 .

[0045] The test sites 3, 4, 5 each have a detection device 15, 16 and 17, which is designed, for example, as an optical detection device (e.g. a camera with a scanner function), with which a specific cable bundle to be tested in the respective test site is identified, for example, by detecting a barcode, etc. The detection device 15, 16, 17 can generate an identification signal which is transmitted to a storage device, in which the start of the test of the respective cable bundle newly arranged in the test site and to be tested is registered.

[0046] In the following, Figure 2a to Figure 2c Combination Figure 3 Exemplary steps for explaining the method according to the invention in more detail, wherein the cable bundles to be tested are denoted here by reference numerals A, B and C, preferably having the same design and each having several connectors and grommets as penetration components.

[0047] Figure 2a It shows how the operator 18 places the first cable bundle A to be tested in the first test site 3, wherein the detection device 15 automatically registers the cable bundle A and sends a message to the storage device 14 that a functional test is starting in the first test site 3. Here, the connector of the first cable bundle is connected to the plug-in connection of the electrical test device 6, and the penetration component of the first cable bundle A is connected to the penetration connection of the sealing test device 7. Figure 2a and Figure 3As shown, the first cable bundle A is now subjected to electrical testing as an electrical functional test and a penetration seal test is performed substantially simultaneously. For example, if the cable bundle A is a high voltage cable bundle, the electrical test may consist of a simple and advanced connection test and sequential low voltage and high voltage tests, the low voltage test preferably including a short circuit test to avoid incorrect connections and possibly other functional tests of electronic devices such as LEDs, communication protocols, resistors, actuators, etc., and the high voltage test preferably including a dielectric breakdown test with multiple operating voltages (e.g. 4.3 kV DC). Figure 2a As shown by arrows 19 and 20, reference numeral 19 represents an electrical test and reference numeral 20 represents a penetration seal test. Figure 3 The abbreviations have the following meanings:

[0048] LV-A: Connection test and low voltage test of wiring harness A

[0049] HV-A: High voltage test of wiring harness A

[0050] GR-A: Grommet seal test for wiring harness A

[0051] HR-A: Sealing test of harness connector of harness A

[0052] LV-A and HV-A together form the electrical test. The same applies to cable bundles B and C, which are also high voltage cable bundles in this case.

[0053] like Figure 2b As shown, the operator 18 can now insert the second cable bundle B to be tested into the second test site 4 in parallel with the automatic running of the functional tests 19, 20 in the first test site 3. In the second test site 4, the second cable bundle B is then registered by the detection device 16 and a signal is sent to the storage device 14 that the functional test is starting in the second test site 4.

[0054] like Figure 2b As shown, in the first test site 3, electrical testing and penetration sealing tests can be completed, and the connector sealing test 21 can be performed on the first cable bundle A, while at the same time and in parallel, in the second test site 4, the electrical test 19 and penetration sealing test 20 have been performed on the second cable bundle B.

[0055] like Figure 2cAs shown, the operator 18 can now insert the third cable harness C to be tested into the third test site 5 in parallel with the automatically running functional tests in the first test site 3 and the second test site 4. In this third test site 5, the cable harness C to be tested is detected by the detection device 17 and an identification signal is generated, which in turn is transmitted to the storage device 14, in which the start of the test of the cable harness C arranged in the third test site 5 and to be tested is registered.

[0056] Then, the electrical test is started on the third cable bundle C. At the same time, the penetration seal test is started on the third cable bundle C in the third test location 5 .

[0057] In the example shown here, see also Figure 3 , the functional test of the cable bundle A in the first test site 3 has also been completed, so that the test and / or inspection results of the cable bundle A can be stored in the storage device (see Figure 3 and cable bundle A can be removed from test location 3 (see Figure 3 The operator 18 can then insert a new cable bundle to be tested into the first test site 3 (see Figure 3 ), and the functional test in the first test site 3 starts again. At the same time, the electrical test and the penetration seal test have been carried out and completed on the second cable bundle B to be tested in the second test site 4, so that the connector seal test 21 is now carried out on the cable bundle B in the second test site 4. Once completed, the test and / or inspection results of the second cable bundle B are also transmitted to the storage device 14 and stored there ("Save B"), and then the cable bundle B is removed ("Take out B") and the new cable bundle to be tested is placed there ("Place new B").

[0058] At the same time, the electrical test and the penetration seal test have been carried out and completed in the third test site 5, so that the connector seal test (not shown) is now being performed there. After completion, the test and / or inspection results of the third cable bundle C are transmitted to the storage device 14 ("Save C"), the cable bundle C can be removed from the third test site 5 ("Take out C"), and then a new cable bundle to be tested can be placed there ("Place new C").

[0059] The above examples show how the cycle time can be significantly reduced by performing at least partial functional testing on several cable bundles simultaneously. Figure 3 The sequence shown in is to be understood only as an example and actually depends on the specific tests to be carried out in each case.

[0060] Reference numerals list

[0061] 1 Device for carrying out a method for functional testing of a cable harness

[0062] 2 Test system

[0063] 3. First test site

[0064] 4 Second test site

[0065] 5. Third test site

[0066] 6 Electrical test equipment

[0067] 7. Sealing test device

[0068] 8 Test equipment for low voltage testing

[0069] 9 Test equipment for high voltage testing

[0070] 10 Test equipment for connector sealing test

[0071] 11 Test equipment for penetration seal testing

[0072] 12 Matrix switching circuit

[0073] 13 Matrix switching circuit

[0074] 14 Storage Devices

[0075] 15. Detection Device

[0076] 16. Detection device

[0077] 17. Detection Device

[0078] 18 Operator

[0079] 19 Electrical Test

[0080] 20 Penetration Seal Test

[0081] 21 Connector sealing test

Claims

1. A method for functional testing of a cable bundle, in particular a high voltage cable bundle, the method comprising: The functional test is performed using a test system, which can be equipped with a cable bundle, the cable bundle having a plurality of components to be tested, the test system having at least one test device, by means of which different, preferably automatically run functional tests can be performed on the components to be tested of the cable bundle, in particular electrical tests and / or sealing tests as functional tests, characterized in that the test system comprises a plurality of test sites sequentially equipped with the cable bundle so as to at least temporarily perform at least one functional test on some of the cable bundles simultaneously.

2. The method according to claim 1, characterized in that When starting to perform functional tests on a plurality of cable bundles, in a first step, a first cable bundle to be tested is arranged in a first test site, and the functional test for the first cable bundle is started, so that at least one functional test is performed on the first cable bundle. During the functional test on the first cable bundle, a second cable bundle to be tested is arranged in a second test site, and the functional test on the second cable bundle is started, so that at least one functional test is performed on the second cable bundle, and at least temporarily, at least one functional test is performed on the first cable bundle and the second cable bundle at the same time.

3. The method according to claim 2, characterized in that During the functional test on the second cable bundle, a third cable bundle to be tested is arranged in a third test site, and the functional test on the third cable bundle is started, so that at least one functional test is performed on the third cable bundle, so that at least temporarily, at least one functional test is performed on the second cable bundle and the third cable bundle at the same time, preferably at least one functional test is performed on the first cable bundle, the second cable bundle and the third cable bundle at the same time.

4. The method according to any one of the preceding claims, characterized in that After functional testing of each cable bundle has been performed, each cable bundle is removed from the designated test site and a new cable bundle is then provided for the test site.

5. The method according to any one of the preceding claims, characterized in that at least one electrical testing device is provided for performing at least one electrical function test, and at least one sealing test device is provided for carrying out at least one sealing test as a functional test, At least one of these functional tests is thus carried out simultaneously on some cable bundles at least temporarily.

6. The method according to claim 5, characterized in that a plurality of said cable bundles to be tested, preferably formed of cable bundles of substantially identical structure, each comprising a plurality of connectors and at least one penetration component as components to be tested, The electrical testing device comprises a plug-in connection for the connector of the cable harness whose electrical properties are to be tested, The seal test device comprises: a plug-in connection of the connector of the cable bundle for testing the connector seal; and at least one penetration connection of the penetration assembly for testing the penetration seal of the cable bundle, At least one of these functional tests is thus carried out simultaneously on some cable bundles at least temporarily.

7. The method according to claim 5 or 6, characterized in that: The electrical test is performed by the electrical testing device as an electrical functional test, preferably, a low voltage test and a high voltage test are performed sequentially as electrical functional tests, preferably so that the electrical test is an integral part of a test program executed by the electrical testing device, by which in a first test step it is determined whether the high voltage cable bundle to be tested meets the performance of the test using the low voltage test, and by which in a second test step which follows the first test step in time, it is determined by the test program whether the cable bundle to be tested meets the performance of the test using the high voltage test.

8. The method according to any one of the preceding claims, characterized in that A storage device is provided, which is coupled to the at least one testing device for transmitting data acquired by the at least one testing device and / or for transmitting data to the at least one testing device.

9. The method according to claim 8, characterized in that Each of the test sites has a detection device, preferably an optical detection device, by which the cable bundle to be tested is identified, preferably so that the detection device generates an identification signal, which is transmitted to the storage device and in which the start of the test of the cable bundle newly arranged in the test site and to be tested is registered.

10. A device for carrying out a method for functional testing of a cable harness, in particular for carrying out a method according to any of the preceding claims, comprising a test system which can be equipped with a cable harness having a plurality of components to be tested, and wherein the test system comprises at least one test device, by means of which different, preferably automatically running functional tests can be carried out on the components to be tested of the cable harness, the functional tests being in particular electrical tests and / or sealing tests as functional tests, characterized in that The test system comprises a plurality of test sites sequentially equipped with the cable bundles, and is designed and configured to perform at least one functional test on some of the cable bundles at least temporarily at the same time.

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