DE202015003622U1 - Device for testing a cable harness of a motor vehicle - Google Patents

Abstract

Device (100) for testing a cable harness (200) comprising at least one cable (210, 220, 230, 240, 250, 260, 270) and provided with at least two harness connectors (201, 213, 214, 221, 235) the apparatus comprising: at least two device connectors (101, 113, 114, 121, 135) adapted to be coupled to the harness connectors (201, 213, 214, 221, 235), a housing (105) an electrical circuit (190) contained in the housing (105) and providing a plurality of electrical paths (191-192, 191-193) between at least two different device connectors (101, 113, 114, 121, 135), the apparatus (100) comprising at least one electrical current detector (125, 126, 127, 131a, 132a, 133a, 134a, 185a) connected to at least one of the electrical paths (191-192, 191-193) to trace the flow of electric current in the electrical paths (191-192, 191-193) assign, and wherein at least one cable of the cable harness is connected to the at least two device connectors.

Description

TECHNICAL AREA

The technical field relates to the testing of cable harnesses, in particular motor vehicle cable harnesses. More specifically, the present invention relates to a device for quickly locating a fault in the arrangement of a wire harness.

BACKGROUND

Various components of a motor vehicle require power to function. In addition, various automotive components must exchange information and / or commands. Therefore, various cables must be mounted in the motor vehicle. In order to prevent a large number of loose cables being present in the motor vehicle, motor vehicle cables are generally combined in a known manner into one or more cable strands.

In addition, to test an internal combustion engine on a bench, the engine must be able to receive / transmit the basic signals necessary to control the operation of the engine. In general, it is not convenient to connect a complete automotive wiring harness to the engine during the bench test because this is a complex process and motor vehicle wiring harnesses are bulky. Typically, a complete automotive wiring harness is converted into a simplified wiring harness prior to the engine test bench test to reduce the number of cables and place them in the simplest possible configuration. However, during such an operation, a cable placement error may occur and / or a cable may be damaged.

As a result, the engine may receive incorrect inputs during the test bench test, or it may not receive any inputs so that the engine fails the test. At this point, however, operators can not predict if the problem is with the engine or with the altered wiring harness. However, even if an operator determines that the problem lies with the wiring harness, it may be difficult to determine which cable of the wiring harness is malfunctioning. Thus, each cable of the cable harness must be checked manually.

This process is time consuming and complex and leads to an undesirable increase in the time required to test an engine. In addition, testing on the test bench is an expensive process, so wasting time during the test bench test is costly.

An object of the present invention is therefore to reduce the time required to test the cable strands.

Another object of the present invention is to avoid any loss of time during the test bench test due to malfunction of the wiring harness.

SUMMARY

These and other objects are achieved by the present invention by means of a device for testing a motor vehicle cable harness according to claim 1. Further aspects of possible embodiments of the present invention are described in the respective dependent claims.

An apparatus for testing a motor vehicle cable harness having at least one cable and at least two harness connectors comprises, according to one embodiment, at least two device connectors adapted to be connected to the harness connectors. The apparatus is further provided with a housing and an electrical circuit contained in the housing and providing a plurality of electrical paths between at least two different device connectors. In addition, the apparatus includes at least one electrical current detector coupled to at least one of the electrical paths for detecting the flow of electrical current in the electrical paths, wherein at least one cable of the cable harness is connected to the at least two device connectors.

Thanks to this embodiment, it is possible to quickly inspect a wire harness. Ie. After a harness has been connected to the device and after the electrical circuit has been energized, an operator (also referred to as the user of the device) may check which electrical current detectors indicate the flow of electrical current.

If some of the electrical current detectors do not indicate the flow of electrical current, an operator is informed if there is a fault in the wiring harness and there is a fault in the wiring harness.

More specifically, a cable of the wiring harness is connected to two device connectors to form a closed path (ie, a closed loop), whereby the electric current can flow. This will allow us to check quickly whether the continuity of the electrical current through the cable harness, and in particular through at least one cable of the cable harness connected to the device by the device connector, is ensured.

In one embodiment, at least one of the paths is provided with a switch, the device preferably comprising an actuator for the switch.

By opening / closing a switch it can be checked whether a signal is transmitted through the cable harness, for example in a cable of the cable harness, independently of any other signal passing through the harness, e.g. B. in another cable of the cable harness is transmitted.

This allows an operator to check whether, after closing the switch, the correct electrical current detector indicates the flow of current in the corresponding path of the device circuit and in the corresponding cable of the cable harness.

If the correct electrical current detector indicates the flow of current in the corresponding path of the device's circuit, the operator is informed of the correct transmission of the corresponding signal. If a false electrical current detector indicates the flow of electrical current in the corresponding path of the device's circuitry, the operator is informed that the signal (e.g., electrical current) is being transmitted in the harness but is being sent to the wrong destination. If no electrical current detector indicates a flow of electrical current in the corresponding path of the device's circuitry, an operator is informed that no signal is being transmitted in the cable harness.

In this way, an operator can quickly identify a problem in the wiring harness.

In one aspect, the actuator is a manually operable actuator. This allows the operator to choose how to control the device by, for example, selecting the cable harness cable to be tested.

In one aspect, at least one electrical current detector is a visual output detector.

In this way, the operator can quickly see the output of the electric current detector.

In another aspect, at least one electric current detector is a light emitter.

This has proven to be a reliable and cost-effective solution that allows immediate and unambiguous message to the operator.

According to a further aspect, at least one electric current detector is arranged on the housing.

Advantageously, the electrical current detector is provided on the outside of the housing to allow easy reporting to the operator.

In another aspect, the device is provided with battery post connectors.

An advantage of this aspect is that the device can mimic a vehicle battery to power the wire harness. According to another aspect, once connected to the device, the harness itself provides power to the device's circuitry, for example, by connecting a cable of the harness to a power source.

According to a further aspect of the invention, the cable harness comprises a plurality of cables, which are for example intended to be connected to the various components of the engine, and in particular intended to mimic this connection during the test bench tests of the engine, the device is provided with a plurality of connectors for corresponding harness connectors of this cable. Advantageously, this makes it possible to test the various cables of the cable harness by one and the same device in a simple and rapid manner.

In one aspect, the apparatus includes at least one fuel pump connector for at least one fuel pumping cable of the harness. In this way, a wire harness having connectors for a fuel pump can be checked by the apparatus according to the present embodiment.

In one aspect, the device includes a connection port for a terminal of the accelerator position sensor. In this way, a wire harness having connectors for the accelerator pedal position sensor (s) can be checked by the apparatus according to the present embodiment.

In one aspect, the device includes a glow plug detector. In one aspect, the device includes a battery signal detector. Thanks to these aspects, which can be used alone or in combination, it can be checked whether a glow plug signal and / or a battery signal are properly transmitted in a cable harness connected to the device.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, advantages and details will be described, by way of example only, in the following detailed description of embodiments, with reference to the accompanying drawings, in which:

1 a schematic view of an apparatus for testing a motor vehicle wiring harness according to an embodiment of the present invention;

2 and 3 are schematic partial sectional views of an apparatus for testing a motor vehicle wiring harness according to an embodiment of the present invention in operation at two consecutive times.

PRECISE DESCRIPTION

Now, exemplary embodiments will be described with reference to the accompanying drawings without intending to limit the applications and uses.

As shown in the figures, an embodiment of the present invention comprises a device 100 for testing a cable harness 200 ,

A cable harness 200 includes a variety of cables in a known manner 210 . 220 . 230 . 240 . 250 . 260 . 270 that z. B. by means of belts, straps, sleeves, etc. are interconnected and in a variety of harness connectors 201 . 213 . 214 . 221 . 235 end up.

The wiring harness connectors 201 . 213 . 214 . 221 . 235 allow the electrical connection of the wiring harness 200 with external devices and are designed to interact with corresponding connectors of another device, generally (but not exclusively) in a male-female configuration. Exemplary wire harness connectors are (one or more pins) electrical terminals, jacks, brackets, etc.

The cables 210 . 220 . 230 . 240 . 250 . 260 . 270 may be of different types, generally capable of transmitting electrical current, for example in the form of an electrical signal and / or in the form of electrical energy. The cables 210 . 220 . 230 . 240 . 250 . 260 . 270 may include one or more wires. So includes the cable 250 for example, two wires (not shown), and the cable 230 includes four wires, one of which (wire 230a ) in 2 and 3 is shown while two wires 240a . 240b of the cable 240 also in 2 and 3 are shown.

The wires of each cable 210 . 220 . 230 . 240 . 250 . 260 . 270 can be connected to one or more wires from another cable (other cable). These connections are made in a known manner, for example by means of connectors. To simplify the presentation, the connections in 1 not shown in detail, but through the box 205 shown schematically. The box 205 symbolizes the connections between the cables 210 . 220 . 230 . 240 . 250 . 260 . 270 ie in the box 205 For example, the wires of each cable may be connected to one or more wires of another cable (other cable). The box 205 can z. For example, one or more fuses or relays may involve the flow of electrical current between the various cables 210 . 220 . 230 . 240 . 250 . 260 . 270 to control. For example, the box 205 The replica of the main relay of an ECM (electronic engine control unit) of an internal combustion engine, the fuel pump relay, etc. include.

In 2 and 3 becomes schematic the connection between the wire 230a of the cable 230 and the wire 240b of the cable 240 shown.

The cables and wires shown are only a schematic example of the cables and wires of a cable harness 200 , Real cable harnesses typically have a greater number of cables and wires. The illustrated cable harness 200 thus serves only the illustration.

• – handelt es sich bei dem Kabel 210 um ein Kabel, das Energie von einer Fahrzeugbatterie zum Kabelstrang 200 überträgt;
• – handelt es sich bei dem Kabel 220 um ein Kabel, welches das Signal beim Einstecken eines Schlüssels (”Schlüssel-Ein”-Signal) in die entsprechende Fassung in einem Kraftfahrzeugs überträgt;
• – handelt es sich bei dem Kabel 230 um ein Kabel, das die Signale der Gaspedalpositionssensoren überträgt.

In the example shown

• - is the cable 210 around a cable, the energy from a vehicle battery to the harness 200 transfers;
• - is the cable 220 a cable which transmits the signal upon insertion of a key ("key-on" signal) into the corresponding socket in a motor vehicle;
• - is the cable 230 a cable that transmits the signals from the accelerator pedal position sensors.

As mentioned, this is just part of the cable that has a wiring harness 200 can form, there this additional and / or instead of the mentioned cable 210 . 220 . 230 may have various other cables.

The battery cable 210 can with two wires 211 . 212 be provided, each having a battery wire connection terminal 213 . 214 exhibit.

The key-on cable 220 can with a jack 221 be provided to trigger the key-on signal.

The accelerator cable 230 may be connected to a plurality of wires (in the illustrated embodiment, as mentioned, four wires) connected in a terminal of the accelerator pedal position sensor 235 to transmit data to / from an accelerator pedal position sensor.

The energy and the signals (eg the electric current flow) from the cables 210 . 220 and 230 then become the device 100 returned. In the illustrated embodiment, the signals and energy from the cables 210 . 220 and 230 via the connection terminal 201 to the device 100 returned. More precisely, the wiring harness 200 with connection cables 240 . 250 . 260 . 270 provided to electrical energy and / or signals from the cables 210 . 220 . 230 to the connection terminal 201 or vice versa.

As mentioned above, it should be noted that the number of connecting cables 240 . 250 . 260 . 270 can differ from the number shown in the figures.

At the connection terminal 201 in a vehicle (and generally in a motor vehicle system) is a terminal having a plurality of pins that is typically connected to a corresponding connector (eg, a terminal port) of the ECM of an internal combustion engine.

In one embodiment, the device is a housing 105 provided with a variety of device connectors 101 . 113 . 114 . 121 . 135 . 181 . 182 having.

The shape of the device connector 101 . 113 . 114 . 121 . 135 is designed to be compatible with at least a portion of the harness connectors 201 . 213 . 214 . 221 . 235 can interact.

In the illustrated embodiment, a terminal connection opening 101 designed to connect with the connection terminal 201 in a male-female configuration.

Similarly, there is an accelerator pedal opening 135 designed to connect with the accelerator pedal position sensor terminal 235 in a male-female configuration.

A version 121 is designed for the socket 221 a cable of the cable harness to mimic a key-on signal of a vehicle.

Battery terminal connector 113 . 114 are designed with battery wire terminals 213 . 214 co.

A device according to an embodiment of the invention may be configured to cooperate with different types of cable harnesses including a number of like harness connectors 201 . 213 . 214 . 221 . 235 have in common.

In the illustrated embodiment, the device 101 further with fuel pump connectors 181 . 182 Mistake. As a result, cables of a cable harness that transmit a pump signal can also be connected to the device 101 get connected. The cable harness shown in the figure 200 is not provided with such a cable, therefore, be in the harness 200 no fuel pump connectors 181 . 182 used.

In one embodiment, in the housing 105 an electrical circuit 190 contain. In 2 and 3 is for illustrative purposes only a small and simplified part of the circuit 190 shown. The following description also applies to the complete circuit.

The electrical circuit 190 is with a variety of branches 191 . 192 . 193 Mistake.

The connection of a plurality of branches makes it possible to define electrical paths between the various device connectors.

In the simplified views of 2 and 3 There are two paths between the terminal connection opening 101 and the accelerator pedal opening 135 shown. In particular, a first path includes the branches 191 and 192 , and a second path includes the branches 192 and 193 ,

It is obvious that the circuit 190 in possible embodiments may have a greater number of paths between the two mentioned connectors.

In addition, one path may have another (eg larger) number of branches of the electrical circuit 190 exhibit. It is not excluded that a path can consist of a single branch.

As will be explained in more detail below, at least part of the paths of the circuit 190 designed to receive at least one signal / electrical energy of the cable harness 200 from a first to a second device connector 101 . 113 . 114 . 121 . 135 transferred to.

If a wire harness 200 Connected to the two device connectors, a loop is formed so that the signal / electrical energy can be sent back from the above-mentioned second device connector to the first connector.

In other words, the electrical circuit 190 constructed as follows: If a wiring harness 200 with the device 101 can be connected in one or more loops, which in the circuit in the device 101 and in the harness 200 self-formed, electric current flow.

For example, the in 2 represented paths 191 - 192 and 191 - 193 designed to be a signal of an accelerator pedal sensor between the terminal connection opening 101 and the accelerator pedal opening 135 transferred to.

If the in 2 and 3 illustrated cable harness 200 with the connection opening 101 and 135 is connected, a loop is formed comprising: the wire 230a of the cable 230 ; the wire 240b of the cable 240 ; the branches 193 and 191 (ie the aforementioned second path) of the circuit 190 ,

The energy source of the loop 230a . 240b . 193 . 191 has been omitted for the sake of simplicity of illustration; it can be z. B. to act on energy from the battery cable 210 comes.

In one embodiment, at least a portion of the paths are electrical current detectors 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a provided with the appropriate paths of the circuit 190 are coupled.

In 2 and 3 is shown that the detectors for electric current 131 . 132a with the branches 192 respectively. 193 are connected. Thus, the detector is for electric current 131 with the first path mentioned above 191 - 192 coupled while the electric current detector 132a with the second path 191 - 193 is coupled.

If a wire harness 200 with the device 100 connected form the paths of the circuit 190 as mentioned, grinding with the cables of the wiring harness so that electrical signals / energy (ie electrical current) can flow in the loops and thus in the paths. As will be explained later, the detectors for electric current 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a thus be used to ensure the correct transmission of a signal / energy between the wires and the cables 210 . 220 . 230 . 240 . 250 . 260 . 270 of the wiring harness 200 to consider.

• – mit einem Glühkerzendetektor 125, um die Übertragung von elektrischer Energie von der Fahrzeugbatterie zu einer Glühkerze eines Kraftfahrzeugmotors zu prüfen;
• – mit einem Batteriesignaldetektor 126, um die Übertragung von elektrischer Energie ausgehend von der Fahrzeugbatterie zu prüfen;
• – mit einem ECM-Hauptrelais-Detektor 127, um die Übertragung von Signalen zum Hauptrelais eines ECM eines Verbrennungsmotors zu prüfen; in der dargestellten Ausführungsform ist nur ein Detektor dargestellt; in der Realität kann mehr als ein ECM-Hauptrelais-Detektor 127 vorgesehen sein;
• – mit vier Gaspedaldetektoren 131a, 132a, 133a, 134a, um die Übertragung von Signalen von den Drähten der Gaspedalpositionssensoren zum ECM eines Motors zu prüfen;
• – mit einem Kraftstoffpumpen-Detektor 185a, um die Übertragung von elektrischer Energie zu einer Kraftstoffpumpe eines Motors zu prüfen.

In the embodiment shown in the figures, the device 100 provided with:

• - with a glow plug detector 125 to check the transmission of electrical energy from the vehicle battery to a glow plug of an automotive engine;
• - with a battery signal detector 126 to check the transmission of electrical energy from the vehicle battery;
• - with an ECM main relay detector 127 to check the transmission of signals to the main relay of an ECM of an internal combustion engine; in the illustrated embodiment, only one detector is shown; in reality, there may be more than one ECM main relay detector 127 be provided;
• - with four accelerator detectors 131 . 132a . 133a . 134a to check the transmission of signals from the wires of the accelerator pedal position sensors to the ECM of an engine;
• - with a fuel pump detector 185a to check the transmission of electrical energy to a fuel pump of an engine.

In addition to or instead of the above-mentioned electrical current detectors 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a Various other electrical current detectors can be chosen.

The electric current detectors may be detectors of various types. In the illustrated embodiment are light emitter with a corresponding path 191 - 192 . 191 - 193 of the circuit 190 are coupled. When electric current in a path 191 - 192 . 191 - 193 flows, the corresponding detector for electric current lights up 131 . 132a on. In this way, an operator recognizes the device 100 Immediately, whether electric current in a path 191 - 192 . 191 - 193 of the circuit 190 flows.

In various embodiments, not shown, other electrical current detectors may be used. For example, one or more sensors (ammeters, Hall sensors, etc.) may be connected to one or more branches of the circuit, and the data collected by these sensors may be the same User (operator) z. For example, using a monitor.

In embodiments of the present invention, the electrical current detectors are visual output detectors, ie, visually informing the user as to whether it is in the appropriate path of the circuit 190 gives an electric current flow. In other words, an operator can use the "visual output" detectors on the detector to see if it is in the appropriate path 191 - 192 . 191 - 193 of the circuit 190 gives an electric current flow. The above-mentioned light emitters and monitors are thus "visual output" detectors.

In various embodiments, not shown, other electrical current detectors may be used, e.g. B. detectors with acoustic output, so that a user can hear through the detector, if it is in the appropriate path 191 - 192 . 191 - 193 of the circuit 190 gives an electric current flow.

In general, an "electrical current detector" is a component (or group of components) that is capable of controlling the flow of current in a path 191 - 192 . 191 - 193 of the circuit 190 and to provide information about this evidence to the user.

The illustrated embodiment in which the detectors for electric current 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a As a light emitter, preferably LED, formed, has proved to be a particularly effective and cost-effective solution.

There may be one or more switches 190a be provided to one of the branches 191 . 192 . 193 to open and close. Thus, a switch 190a one or more paths 191 - 192 . 191 - 193 of the circuit 190 selectively open and close.

In the illustrated embodiment, the switch 190a with the branch 191 coupled, making it both paths 191 - 192 . 191 - 193 can selectively open / close.

The switches can be activated by appropriate actuators 131b . 132b . 133b . 134b . 122 . 185b the device 101 be operated.

In the simplified view of the circuit 190 from 2 and 3 actuates the actuator 131b the switch 190a , The others in 1 illustrated actuators 132b . 133b . 134b . 122 . 185b are similarly provided with corresponding switches (not shown in detail in the figures) of the circuit 190 connected.

In one embodiment, the device is 100 with an energy connection 107 provided that connects to an external power source (not shown) to the electrical circuit 190 to provide energy. In one embodiment, the power connector includes a transformer to provide the electrical circuit with 12V DC power. In other embodiments, the transformer may be omitted if the power source 12 is capable of delivering V-DC.

In the illustrated embodiment, the energy from the external power source becomes the battery post connectors 113 and 114 directed. Thus, the energy is not supplied directly to the circuit 190 but over the wiring harness 200 ie from the power connection 107 over the battery pole connector 113 . 114 to the cable harness 200 and then from the wiring harness 200 over one or more of the harness connectors 201 . 221 . 235 to the electrical circuit 190 ,

In other, not shown embodiments, the power supply directly to the electrical circuit 190 respectively.

In further, not shown embodiments, the power connections can be omitted, since the electrical circuit 190 through the cable harness 200 directly supplied with energy by z. B. the battery wire terminals 213 . 214 be connected to a real battery, for example, with a battery, as used in a vehicle.

During the application are the connectors 201 . 213 . 214 . 221 . 235 of a cable harness 200 with the appropriate connectors 101 . 113 . 114 . 121 . 135 the device 100 coupled.

According to 2 and 3 is the wiring harness connector 201 with the device connector 101 coupled, and the harness connector 235 is with the device connector 135 coupled.

When the wiring harness 200 and the device 100 connected to each other, form the wires of the cables 210 . 220 . 230 . 240 . 250 . 260 . 270 of the wiring harness 200 and the paths of the circuit 190 one or more loops.

As mentioned above, is in 2 and 3 a loop 230a . 240b . 193 . 191 shown.

Electric power can be supplied via the wiring harness 200 or the device 100 in the electrical circuit 190 and thus fed into the above-mentioned loops. In the illustrated embodiment, the electrical current is from the electrical device connected to a power source (not shown) 100 over the battery cable 210 to the cable harness 200 and then it is connected by one or more of the cable harnesses 201 . 221 . 235 to the electrical circuit 190 recycled.

In 2 and 3 is the energy supply to the electrical circuit 190 not shown.

If present, one or more actuators can 132b . 133b . 134b . 122 . 185b be operated to open / close one or more switches.

According to 2 and 3 can the actuator 131b be pressed to the switch 190a to open / close.

The opening / closing of one or more switches causes the opening / closing of one or more paths between different device connectors 101 . 113 . 114 . 121 . 135 ,

Depending on the configuration of the wires and cables of the wiring harness, one or more loops are closed, and electrical current can flow in the closed loop (s) and thus in the path (s) that is part of the closed loop (FIG. n) is / are.

The detectors for electric current 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a indicate whether electric current is flowing in the corresponding path, ie in the path to which they are connected.

In 3 the following can be seen: when the switch 190a two paths between the device connectors are activated 101 and 135 closed, ie the path that branches 191 . 192 includes, and the path that the branches 191 and 193 includes. Due to the configuration of the wiring harness 200 is only the path 191 - 193 Part of a closed loop, especially the loop 230a . 240b . 193 . 191 ,

As a result, electric current flows in the loop 230a . 240b . 193 . 191 and thus in the path 191 - 193 , The detector for electric current 132a shows the flow of electrical current in the path 191 - 193 at. In the illustrated embodiment, the electric current detector is a light emitter, such that the electric current detector 132a lights up when electric current is in the path 191 - 193 flows.

An operator can therefore determine if the wiring harness 200 is arranged correctly. In fact, should the wires and cables of the wiring harness 200 are properly arranged, a corresponding detector for electrical current indicate the flow of electrical current in the corresponding path of the electrical circuit, if an actuator 132b . 133b . 134b . 122 . 185b is pressed.

• – Wenn der Aktuator 122 betätigt wird, sollte das ECM-Hauptrelais 127 aufleuchten;
• – wenn der Aktuator 131b betätigt wird, sollte der Gaspedaldetektor 131a aufleuchten;
• – wenn der Aktuator 132b betätigt wird, sollte der Gaspedaldetektor 132a aufleuchten;
• – wenn der Aktuator 133b betätigt wird, sollte der Gaspedaldetektor 133a aufleuchten;
• – wenn der Aktuator 134b betätigt wird, sollte der Gaspedaldetektor 134a aufleuchten.

According to the figures, in which the electric current detectors are designed as LEDs, the following should occur after a properly arranged wire harness 200 with the device 100 was connected:

• - If the actuator 122 The ECM main relay should be activated 127 light up;
• - if the actuator 131b is pressed, should the accelerator pedal detector 131 light up;
• - if the actuator 132b is pressed, should the accelerator pedal detector 132a light up;
• - if the actuator 133b is pressed, should the accelerator pedal detector 133a light up;
• - if the actuator 134b is pressed, should the accelerator pedal detector 134a come on.

As mentioned, it is possible that some paths are not provided with a switch so that one or more loops may be closed when a harness is connected to the device. For example, if the wire harness connectors 201 and 221 with the device connectors 101 and 121 should be connected, the glow plug detector 125 and the battery signal detector 126 light up immediately.

If a wiring harness that connects with a connector to the fuel pump connectors 181 . 182 the device 101 is connected to the device itself, the fuel pump detector should 185a light up as soon as the actuator 185b is pressed.

According to the embodiment shown in the figures, the activation of the actuator is illuminated 131b the accelerator pedal detector 132a on. As mentioned, the accelerator pedal should be 131 light up when the wiring harness 200 is arranged correctly. The operator is informed in this way that there is a fault in the wiring harness 200 is present.

In addition, the operator is not only aware of the presence of a fault in the wiring harness 200 but also where the fault lies, ie when transmitting a signal from the accelerator pedal position sensor. More specifically, he is informed that the wires transmitting the signal from an accelerator pedal sensor have been mismatched. Like this from the schematic 2 and 3 It should be noted that in a properly arranged harness the wire 230a of the cable 230 with the wire 240a of the cable 240 and not with the wire 240b be connected, as shown.

Out 1 shows that an operator is the actuator 133b pressed and the current detector 133a lights. This is information that the corresponding accelerator pedal signal is in the wiring harness 200 is properly transmitted.

After the wiring harness connectors 201 and 221 with the device connectors 101 and 121 are connected, the glow plug detector lights up 125 not on while the battery signal detector 126 lights. This informs a user that the harness is 200 the battery signal, but not the glow plug signal transmits properly.

As mentioned above, thanks to the present invention, the operator is informed if there is a fault in the wiring harness 200 and if there is a problem where this problem lies.

In summary, the following can be said: The user (operator), who transmits a signal (or several signals) in the cable harness 200 wants to check, connects the harness 200 with the device 100 and supplies the electrical circuit 190 with energy. If present, an actuator is actuated to close a corresponding switch.

• – Der korrekte Detektor (die korrekten Detektoren) für elektrischen Strom leuchtet/leuchten auf: Das Signal wird im Kabelstrang 200 zum korrekten Ziel übertragen;
• – ein falscher Detektor (falsche Detektoren) für elektrischen Strom leuchtet/leuchten auf: Das Signal wird im Kabelstrang 200 übertragen, aber nicht zum korrekten Ziel, z. B. da einige Drähte falsch miteinander verbunden sind;
• – kein Detektor für elektrischen Strom leuchtet auf: Das Signal wird im Kabelstrang 200 nicht übertragen.

Subsequently, in the device 100 the following situations occur:

• - The correct detector (s) for electric current is lit / lit: The signal is in the wiring harness 200 transferred to the correct destination;
• - a wrong detector (false detectors) for electric current lights up / lights up: the signal is in the cable harness 200 transferred, but not to the correct destination, eg. B. because some wires are wrongly connected to each other;
• - no electric current detector lights up: the signal is in the wiring harness 200 not transferred.

In the foregoing summary and detailed description, at least one exemplary embodiment has been presented; however, it should be noted that there are a large number of modification options. It should also be noted that the exemplary embodiment or exemplary embodiments are only examples and are not intended to limit the scope, applicability, or construction in any way whatsoever. Rather, the foregoing summary and detailed description will provide those skilled in the art with a practical guide to implementing at least one example embodiment, it being understood that various changes may be made in the functions and arrangements of the elements described with reference to an exemplary embodiment without departing from the spirit of the invention Scope of protection as defined in the appended claims and their legal equivalents.

LIST OF REFERENCE NUMBERS

100

Device for testing a motor vehicle cable harness

101

Terminal connection opening

105

Housing of the device

107

Power cable

113

Battery terminal connector

114

Battery terminal connector

121

Socket for socket 221

122

actuator

125

Glühkerzendetektor

126

Battery signal detector

127

ECM main relay detector

131

accelerator detector

131b

Actuator of the switch 190a

132a

accelerator detector

132b

actuator

133a

accelerator detector

133b

actuator

134a

accelerator detector

134b

actuator

135

Accelerator pedal connecting opening

181

A fuel pump connector

182

A fuel pump connector

185a

Fuel pumps detector

185b

actuator

190

electrical circuit

190a

Switch of electrical circuit

191

Branch of electrical circuit

192

Branch of electrical circuit

193

Branch of electrical circuit

200

wire harness

201

connecting terminal

205

Box with connections of harness

210

battery cable

211

battery wire

212

battery wire

213

Battery wire terminal

214

Battery wire terminal

220

Key-on cable

221

Socket of the key-on cable

230

accelerator cable

230a

Wire of accelerator cable

235

Connection terminal of the accelerator pedal position sensor

240

connection cable

240a

Wire of the connection cable 240

240b

Wire of the connection cable 240

250

connection cable

260

connection cable

270

connection cable

Claims (13)

Contraption ( 100 ) for testing a cable harness ( 200 ), which has at least one cable ( 210 . 220 . 230 . 240 . 250 . 260 . 270 ) and with at least two cable harness connectors ( 201 . 213 . 214 . 221 . 235 ), the device comprising: at least two device connectors ( 101 . 113 . 114 . 121 . 135 ) designed to work with the harness connectors ( 201 . 213 . 214 . 221 . 235 ), a housing ( 105 ), an electrical circuit ( 190 ) located in the housing ( 105 ) and a multiplicity of electrical paths ( 191 - 192 . 191 - 193 ) between at least two different device connectors ( 101 . 113 . 114 . 121 . 135 ), the device ( 100 ) at least one electric current detector ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ), which is connected to at least one of the electrical paths ( 191 - 192 . 191 - 193 ) is connected to the flow of electric current in the electrical paths ( 191 - 192 . 191 - 193 ), and wherein at least one cable of the cable harness is connected to the at least two device connectors. Contraption ( 100 ) according to claim 1, wherein at least one of the paths ( 191 - 192 . 191 - 193 ) with a switch ( 190a ) is provided. Device according to claim 2, wherein the device ( 100 ) an actuator ( 131b . 132b . 133b . 134b . 122 . 185b ) for the switch ( 190a ) having. Contraption ( 100 ) according to claim 2 or 3, wherein the at least one actuator ( 131b . 132b . 133b . 134b . 122 . 185b ) is a manually operated actuator. Contraption ( 100 ) according to one of the preceding claims, wherein at least one electric current detector ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ) a detector with visual output ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ). Contraption ( 100 ) according to one of the preceding claims, wherein at least one electric current detector ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ) a light transmitter ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ). Contraption ( 100 ) according to one of the preceding claims, wherein at least one electric current detector ( 125 . 126 . 127 . 131 . 132a . 133a . 134a . 185a ) is arranged on the housing. Contraption ( 100 ) according to one of the preceding claims, comprising battery pole connectors ( 113 . 114 ) to the wiring harness ( 200 ) to provide energy. Contraption ( 100 ) according to one of the preceding claims, comprising at least one fuel pump connector ( 181 . 182 ) for at least one fuel pump cable of the wiring harness ( 200 ). Contraption ( 100 ) according to one of the preceding claims, comprising a connection opening ( 135 ) for a terminal of the accelerator pedal position sensor ( 235 ) of the cable harness ( 200 ). Contraption ( 100 ) according to one of the preceding claims, comprising a glow plug signal detector ( 125 ). Contraption ( 100 ) according to one of the preceding claims, comprising a battery signal detector ( 126 ). Device according to one of the preceding claims, wherein the device connector has a terminal connection opening ( 101 ) for a connection terminal ( 201 ) of the cable harness ( 200 ) having a plurality of pins.

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