KR200291047Y1 - Auto Transaxle Tester - Google Patents

Abstract

The present invention relates to an automatic transmission test apparatus for quickly diagnosing a failure of an automatic transmission system with a simple circuit configuration. A plurality of connectors are selected according to the type of the vehicle transmission system and connect the ECU and the transmission system of the vehicle. 11 to 14); A main cable 20 which receives a signal from the ECU through the connectors 11 to 14 and transmits a signal to the transmission system side; A plurality of hose plugs 70 connected to line pressure check ports on the transmission system to serve as adapters; A plurality of hoses 60 for receiving respective line pressures through line pressure check ports connected through the hose plug 70; A gauge set (50) for displaying respective line pressures on the transmission system through the hose (60); The main cable 20 receives a signal from the ECU or generates a signal required for the test and outputs the corresponding signals to the transmission system side for automatic transmission test, damper clutch operation test, stall test, hydraulic system test and voltage test. And a tester 30 to perform; It is characterized in that it comprises a power plug 40 is connected to the cigarette socket of the vehicle to supply the power required to perform the operation of the tester (30).

Description

Automatic Transmission Test Device {Auto Transaxle Tester}

The present invention relates to an automatic transmission test apparatus for a vehicle, and more particularly, to an automatic transmission test apparatus for faster diagnosis of a failure of an automatic transmission system with a simple circuit configuration.

In general, an automatic transmission of a vehicle automatically performs a clutch action and a transmission action, such as a combination of a fluid coupling and an automatic transmission, a combination of a torque converter and a planetary gear transmission, and mainly a torque converter and a planetary. The combination of a gear type transmission is used.

And, the automatic transmission is determined by the change value of the vehicle speed that is variable according to the driving state of the vehicle and the throttle valve opening amount that is variable according to the driving intention of the driver, and when the shift condition is established in the driving vehicle, the automatic transmission module That is, the transmission control unit (TCU) shifts the gear shift stage of the driving vehicle to the target gear shift stage.

As a device for testing the normal operation of such an automatic transmission, conventionally, a control specification according to actual driving conditions is mainly set by using a computer to test the operation state of the solenoid valve mounted on the valve body of the automatic transmission.

As such, the use of a computer can be cumbersome and difficult for the user to manually set the control specifications according to actual driving conditions. Also, various tests (e.g., damper clutch operation test) are performed for each stage of the vehicle. Test), mechanical system test, hydraulic system test, voltage test, etc.) or control specifications that need to be set according to the type of automatic transmission. There is a disadvantage in that the number of programs is increased and the probability of an error caused by a program of a computer increases.

In addition, the conventional test apparatus performs gear shifts for each stage manually in place of the TCU of the vehicle, and defects in shifting that are difficult to understand by a high-scan, such as low oil pressure, a clutch inside the transmission, It is difficult to check the wear of brakes, seizure of valves in the valve board, and electrical problems outside the transmission, which also has the disadvantage of requiring different computer program control specifications.

In order to solve the problems as described above, the present invention provides an automatic transmission test device that can diagnose and repair whether the internal or external problems faster by diagnosing the failure of the automatic transmission system faster with a simple circuit configuration. , Its purpose is.

In addition, the present invention implements an automatic transmission test apparatus with a simple circuit configuration to perform various tests for each stage regardless of the type of automatic transmission of the vehicle, and performs manual gear shift for each stage in place of the TCU of the vehicle. This makes it easy to check for defects in shifting that are hard to understand by high-scanning.

1 is a view showing the configuration of an automatic transmission test apparatus according to an embodiment of the present invention.

FIG. 2 is a view illustrating components provided in a panel of a tester in FIG. 1 as an example. FIG.

3 is a diagram illustrating an internal configuration circuit of a tester in FIG. 1 as an example.

4A-4D show the solenoid valve operating table in FIG.

5A-5D show the line pressure table in FIG. 1;

Explanation of symbols on the main parts of the drawings

11 ~ 14: Connector 20: Main Cable

30: Tester 40: Power Plug

50: Gauge Set 60: Hose

70: Hose Plug 31: Power Indicator

32-1 to 32-4: Test Probe Access

33: Vehicle Auto Transaxle Type Indicator

34: Solenoid Operation Indicator

35: Selector Knob 36: DCC Switch

37: Test Mode Select Switch

81: input / output terminal 82: transmission type display section

83: test mode selector switch 84: gear stage selector

85: controller 86: driver

87: solenoid operation display unit 88: mode selection switching unit

89: check point 90: DCC switch

Automatic transmission test apparatus according to an embodiment of the present invention for achieving the above object is selected according to the type of the vehicle transmission system a plurality of connectors for connecting the ECU and the transmission system of the vehicle; A main cable receiving a signal from the ECU through the connector and transmitting a signal to the transmission system side; A plurality of hose plugs connected to line pressure check ports on the transmission system to serve as adapters; A plurality of hoses receiving respective line pressures through line pressure check ports connected through the hose plug; A gauge set for displaying respective line pressures on the transmission system through the hose; Through the main cable to receive a signal from the ECU or to generate a signal required for the test outputs the signals to the transmission system side to perform automatic shift test, damper clutch operation test, stall test, hydraulic system test and voltage test With a tester; It is characterized in that it comprises a power plug for supplying the power required to perform the operation of the tester by connecting to the cigarette socket of the vehicle.

Alternatively, the automatic transmission test apparatus according to another embodiment of the present invention receives the solenoid valve operation signal from the ECU of the vehicle, generates and transmits the transmission type selection signal according to the type of the vehicle transmission system, and transmits the corresponding solenoid valve operation signal. An input / output terminal which is transmitted to the transmission system to drive the solenoid valve; A transmission type display unit displaying a type of the transmission system by a transmission type selection signal generated at the input / output terminal; A test mode selection switch unit which generates and transmits a selection mode signal when an operator selects a mode; A gear stage selector configured to generate and transmit a gear stage selection signal when an operator selects a gear stage; A control unit for generating a corresponding solenoid valve operation signal by combining a transmission type selection signal transmitted through the input / output terminal and a gear stage selection signal transmitted from the gear stage selection unit; A drive unit for transmitting the solenoid valve operation signal generated by the control unit to the input / output terminal; A solenoid operation display unit displaying an operation state of each solenoid valve by a solenoid valve operation signal transmitted through the drive unit; And a mode selection switching unit for blocking or transferring the solenoid valve operation signal of the ECU transmitted through the input / output terminal according to the selection mode signal transmitted from the test mode selection switch unit. do. Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention in detail as follows.

As shown in FIG. 1, the automatic transmission test apparatus according to the embodiment of the present invention includes a plurality of connectors 11 to 14, a main cable 20, a tester 30, a power plug 40, It includes a gauge set 50, a plurality of hoses 60, and a plurality of hose plugs 70.

The connectors 11 to 14 connect the main cable 20, a vehicle ECU (ie, a transaxle control module (TCM)) and a transmission system (ie, a solenoid valve connector in a transmission) to each other, and form a transmission. It is selected according to (Type). For example, the connector application table is shown in Table 1 below.

Connector number Transmission type Pin number 1st connector TKDE 026A-ACL4 F4A42 / F4A51-2 10 2nd connector TKDE 026A-ACL1 FA4AEL 9 3rd connector TKDE 026A-ACL3 03-72LE (AISIN FR) 3 4th connector TKDE 026A-ACL5 F5A51-3 10

The main cable 20 connects the connectors 11 to 14 to the tester 30 to exchange signals between the ECU and the transmission system of the vehicle with the testers 30 through the connectors 11 to 14, respectively. Do it.

The tester 30 receives a signal from the ECU of the vehicle through the main cable 20 or generates a signal for testing itself and outputs the corresponding signals to the transmission system side of the vehicle through the main cable 20. It performs automatic shift test, damper clutch operation test, mechanical system test, stall test, hydraulic system test and voltage test. In particular, the corresponding automatic shift test is performed in each stage (i.e., 1 to 4 or 5) in accordance with each transmission type, as shown in the solenoid valve operation table as shown in FIGS. 4A to 4D in the TCM. Check that the solenoid valve is functioning properly. The damper clutch operation test verifies the normal operation of the damper clutch to engage the gears in gears 2, 3, 4 (or 5). The stall test determines the slippage generated in the friction elements of each clutch and brake disc. The hydraulic system test determines the exact cause and system defect of losses occurring within a mechanical or hydraulic system.

Components of the panel of the tester 30, as shown in Figure 2, the power indicator 31, and the test probe access 32 of the plus, minus, solenoid voltage and ATF temperature (32) -1 to 32-4), transmission type indicator 33, solenoid operation indicator 34, selection knob 35 for selecting the stage, DCC switch 36 for selecting the damper clutch test, And a test mode selection switch 37 for selecting a manual shift test mode and an automatic shift test mode. Here, the solenoid actuation indicator 34 may include a first solenoid or an under drive clutch (S1 / UD), a second solenoid or an over drive clutch (S2 / OD), a third solenoid or Second Brake (S3 / 2ND), Fourth Solenoid or Lower Reverse Clutch (S4 / LR), First Solenoid or Under Drive Clutch (S1 / UD) , Solenoid operation indicator such as the fifth solenoid or reduction brake (S5 / RED), damper clutch test (lockup / DCC) is displayed.

The power plug 40 is connected to a cigarette socket of the vehicle to supply power to the tester 30 to perform the operation of the tester 30.

The gauge set 50 displays the line pressure on the vehicle transmission through each of the hoses 60.

The hose 60 connects a line pressure check port on a vehicle transmission connected through the respective hose plugs 70 to the gauge set 50 so that the pressure of each line on the vehicle transmission is set to the gauge set 50. Deliver to 50.

The hose plug 70 serves as an adapter that connects the line pressure check ports on the vehicle transmission to the hose 60.

On the other hand, the internal circuit configuration of the tester 30, as shown in Figure 3, the input / output terminal 81, the transmission type display unit 82, the test mode selection switch unit 83, gear stage selection The unit 84, the control unit 85, the drive unit 86, the solenoid operation display unit 87, the mode selection switching unit 88, the check point unit 89, the DCC switch unit 90 It is provided with.

The input / output terminal 81 receives a solenoid valve operation signal from the ECU of the vehicle through the connectors 11 to 14 connected to the main cable 20, and applies the type of the connectors 11 to 14 selected according to the transmission type. Accordingly, the transmission type is displayed on the transmission type display unit 82, that is, the transmission type selection signal is applied to the transmission type display unit 82 and also to the control unit 85. In addition, the input / output terminal 81 connects the connectors 11 to 14 connected to the main cable 20 to the solenoid valve actuation signal applied through the drive unit 86 or the mode selection switching unit 88. Through the transmission system to drive the solenoid valve.

The transmission type display unit 82 displays the transmission type according to the type of the connectors 11 to 14 connected to the main cable 20 by the input / output terminal 81.

The test mode selection switch unit 83 is a manual shift test mode (that is, a test mode) selected by the test mode selection switch 37 shown in FIG. (Normal Mode)) is informed to the mode selection switching unit 88, that is, a selection mode signal is applied to the mode selection switching unit 88.

The gear stage selection unit 84 informs the control unit 85 of the gear stage selected by the selection knob 35 shown in FIG. 2, that is, the gear stage selection signal is applied to the control unit 85.

The control unit 85 combines the transmission type selection signal applied through the input / output terminal 81 and the gear stage selection signal applied from the gear stage selection unit 84 and are shown in FIGS. 4A to 4D corresponding thereto. The solenoid valve operation signal necessary for the control of the operation of the solenoid valve in the solenoid valve operation table as described above is generated and applied to the drive unit 86.

The drive unit 86 applies an electric signal generated by the control unit 85, that is, a solenoid valve operation signal to the solenoid operation display unit 87 and the input / output terminal 81.

The solenoid operation indicator 87 displays an operation state of each solenoid valve in accordance with a solenoid valve operation signal applied through the drive unit 86.

The mode selection switching unit 88 blocks the solenoid valve operation signal of the ECU applied through the input / output terminal 81 according to the selection mode signal applied from the test mode selection switch unit 83, or the input / Output through the output terminal (81). For example, in the manual shift test mode, the solenoid valve actuation signal of the ECU applied through the input / output terminal 81 is blocked.

The check point unit 89 is provided with a plurality of terminals to check the operation state of each solenoid valve or transmission oil sensor using a scope and a multi-meter.

When the DCC switch unit 90 turns on the DCC switch 36 shown in FIG. 2 to perform a damper clutch test, the DCC switch unit 36 receives a damper clutch test signal by turning on the corresponding DCC switch 36. It passes through 81 to the transmission system, allowing the DCC solenoid valve to be driven.

The test operation for the automatic transmission test apparatus according to an embodiment of the present invention will be described by test type as follows.

First, check and correct the engine coolant, engine oil and ATF level before performing the automatic shift test, and refer to the ATF temperature table as shown in Table 2 below to raise the ATF temperature to the normal operating level. Warm up the engine.

Engine type Transmission type ATF temperature ATF voltage 2.0D F4A42 158 ℉ ~ 176 ℉ 3.2V ± 0.5V 2.5D V6 F4A42 158 ℉ ~ 176 ℉ 3.2V ± 0.5V A6D FA4AEL 158 ℉ ~ 176 ℉ 2V ± 0.5V T8D FA4AEL 158 ℉ ~ 176 ℉ 2V ± 0.5V A3E / A5D FA4AEL 158 ℉ ~ 176 ℉ 2V ± 0.5V FED 03-72LE (AISIN FR) 158 ℉ ~ 176 ℉ RF TCI 03-72LE (AISIN FR) 158 ℉ ~ 176 ℉ 3.5D V6 F5A51-3 158 ℉ ~ 176 ℉ 3.2V ± 0.5V

Then, install each component of the automatic transmission test device in the vehicle, open the engine hood to disconnect the battery cable, remove the air cleaner or battery for ease of operation of the solenoid valve connector, Disconnect the solenoid valve connector from the transmission and refer to the connector application table as shown in Table 1 above to select the connectors 11 to 14 according to the transmission type and connect it with the main cable 20.

At this time, the connector 11 to 14 is a 'Y' shaped connector, the main cable 20 is connected to one port on one side and the ECU (that is, TCM) and transmission system of the vehicle to the two ports on the other side, respectively. (That is, the solenoid valve connector in the transmission) is connected, and the selected connectors 11 to 14 are connected to the 25th of the input / output terminals 81 of the tester 30 to which power is supplied through the main cable 20. By connecting the terminals with the terminals 16 to 21, the transmission type is displayed on the transmission type display unit 82 shown in FIG. 3, for example, a plurality of transmission type display units 82 for each transmission type are displayed. Implemented by LED, when connecting the selected connector (11 to 14) to the input / output terminal 81 through the main cable 20, the terminal corresponding to terminal 25 and the selected connector (11 to 14) (No. 16 ~ No. 21) by connecting the corresponding LED It lights up.

Then, the main cable 20 is passed through the space between the hood panel and the cow top cover of the vehicle, connected to the tester 30, and a power plug connected to the tester 30. 40) to the cigarette socket of the vehicle.

Then, after reconnecting the battery of the vehicle and closing the hood panel of the vehicle, a high-scan for performing the inspection of the engine RPM is connected and the test mode selection switch of the tester 30 is selected as the normal mode. . In this case, in the normal mode, the solenoid valve through the connector 11 to 14 connected to the main cable 20 from the ECU of the vehicle through the terminals 1 to 6 of the input / output terminals 81. The activation signal is applied and the corresponding solenoid valve operation signal is output to the transmission system through terminals 10 to 15.

In addition, the test mode selection switch should be changed while the vehicle's ignition key is turned off, otherwise the solenoid valve of the automatic transmission may be abnormally operated.

Then, after starting the engine, check the idle speed in the parking range by referring to the engine RPM table as shown in Table 3 below.

Engine type Transmission type ATF temperature RPM 2.0D F4A42 800 ± 100 2500 2.5D V6 F4A42 700 ± 100 2500 A6D FA4AEL 800 ± 50 2200-2500 T8D FA4AEL 800 ± 50 2000 to 2500 A3E / A5D FA4AEL 780 ± 50 2000 to 2500 FED 03-72LE (AISIN FR) 800 ± 50 2000-2300 3.5D V6 F5A51-3 700 ± 100 2500

Then, the brake pedal is firmly pressed and the drive range is changed to drive the vehicle, and the TCM is applied to each automatic transmission type by referring to the solenoid valve operating table as shown in FIGS. 4A to 4D. Verify that each solenoid valve in each stage (i.e. from 1st stage to 4th stage or 5th stage) is operating correctly.

Secondly, in the case of the damper clutch operation test, the idle speed is checked at the parking stage by performing the same as the above-described automatic shift test. If the idle speed is within the specification range of Table 3, the transmission lever is opened. After changing to the drive stage, the selection knob 35 of the tester 30 is selected as the first stage, and the solenoid operation indicator 34 of the tester 30 checks whether the state of the solenoid valve is normal.

In addition, when the brake pedal is pressed and the DCC switch 36 of the tester 30 for selecting the damper clutch test is pushed, the damper clutch operates correctly when the engine of the vehicle performs the stop motion. You can judge that you are performing.

Then, after restarting the engine of the vehicle, as shown in the engine RPM table of Table 3, if the engine gradually idles at the normal engine speed, it may be determined that the damper clutch is properly released.

In addition, the selection knob 35 of the tester 30 may be selected in other stages (ie, from 2 stages to 4 stages or 5 stages) and the normal operation of the damper clutch may be tested as described above.

Thirdly, in the case of the stall test, which is a mechanical system test, the idle speed is checked in the parking stage by performing the same as the above-described automatic transmission test, after the brake pedal is firmly pressed and the transmission lever is changed to the drive stage, The selection knob 35 of the tester 30 is selected in one stage, and the solenoid operation indicator 34 of the tester 30 checks whether the solenoid valve is in a normal state.

Then, the tester operator firmly presses the brake pedal with his left foot and then gradually presses the acceleration pedal with his right foot, so that the engine RPM is within the specification range as shown in the engine RPM table in Table 3 above. Check

In addition, the selection knob 35 of the tester 30 is selected in other stages (ie, from 2 stages to 4 stages or 5 stages), and as described above, the engine RPM is as shown in the engine RPM table of Table 3. Check if it is within specification. At this time, in order to find an abnormal part, the normal ranges are compared with the abnormal numbers by referring to the solenoid valve operation table as shown in FIGS. 4A to 4D.

Fourthly, in the case of the hydraulic system test, the air shifter or battery is moved in the same manner as the above-described automatic shift test, and a high-scan is connected to the engine to check the engine RPM. The cable and the solenoid valve connector are separated and the connectors 11 to 14 according to the transmission type are selected and connected to the main cable 20 by referring to the connector application table as shown in Table 1 above.

Then, the power plug 40 connected to the tester 30 is connected to the cigarette socket of the vehicle, the line pressure check port screw is removed from the transmission, and each hose 60 is connected to the corresponding transmission using the hose plug 70. To each line pressure check port on the

Then, the battery cable of the vehicle is reconnected and the vehicle is raised to hang the gauge set 50 using the chain, and the respective hoses 60 are connected to the corresponding gauge set 50.

Accordingly, the test mode selection switch of the tester 30 is selected as the test mode. In this case, the test mode selection switch should be changed while the ignition key of the vehicle is turned off, otherwise the solenoid valve of the automatic transmission may be abnormally operated.

Then, after starting the engine of the vehicle, the idle speed is checked in the parking stage by referring to the engine RPM table as shown in Table 3 above. If the idle speed is within the range described in Table 3, the transmission lever is changed to the drive stage. After that, the selection knob 35 of the tester 30 is selected as the first stage and the solenoid operation indicator 34 of the tester 30 confirms whether the solenoid valve is in a normal state.

Then, after setting the engine RPM as described in the line pressure table for each transmission type as shown in Figures 5a to 5d, the pressure value measured through the gauge set 50 is the standard of the line pressure table Make sure you are in the range of hydraulic pressure values.

In addition, the selection knob 35 of the tester 30 may be selected in other stages (ie, from 2 stages to 4 stages or 5 stages) and the hydraulic pressure value may be checked as described above. At this time, in order to find an abnormal part, the normal stages are compared with the abnormal stages by referring to the line pressure table as shown in FIGS. 5A to 5D.

Meanwhile, the operation of the tester 30 will be described with reference to the circuit diagram of FIG. 3.

First, the solenoid valve operation signal applied from the ECU of the vehicle is connected to the tester through terminals 1 to 6 of the input / output terminals 81 through the connectors 11 to 14 connected to the main cable 20. 30) is entered.

At this time, the connectors 11 to 14 are selected according to the transmission type of the vehicle and connected to the main cable 20. When the selected connectors 11 to 14 are connected, the input / output terminal 81 is By connecting the 25th terminal and the 16th to 21th terminal where the power is supplied, the transmission type selection signal is applied to the transmission type display unit 82 and also to the control unit 85.

Accordingly, the transmission type display unit 82 displays the transmission type by lighting the LED according to the type of the connectors 11 to 14 by the input / output terminal 81.

When the operator selects the mode, that is, when the manual shift test mode or the automatic shift test mode is selected through the test mode selection switch 37 shown in FIG. 2, the test mode selection switch unit 83 selects the corresponding test mode. The mode selection switching unit 88 is informed of the mode selected by the switch 37.

If the automatic shift test mode, the mode selection switching unit 88 is a solenoid of an ECU applied through the input / output terminal 81 by a selection mode signal applied from the test mode selection switch unit 83. The valve operation signal is output to the transmission system through terminals 10 to 15 of the input / output terminals 81 to drive the solenoid valve.

On the other hand, in the manual shift test mode, the mode selection switching unit 88 of the ECU applied through the input / output terminal 81 by the selection mode signal applied from the test mode selection switch unit 83. Shut off solenoid valve actuation signal.

In addition, when the operator selects the gear stage, that is, when the gear stage is selected through the selection knob 35 shown in FIG. 2, the gear stage selection unit 84 recalls the gear stage selected by the corresponding selection knob 35. The controller 85 is informed, that is, a gear stage selection signal is applied to the controller 85.

Accordingly, the control unit 85 combines the transmission type selection signal applied through the input / output terminal 81 and the gear number selection signal applied from the gear stage selection unit 84 and correspond to FIGS. 4A to 4D. The solenoid valve operation signal necessary for the control of the operation of the solenoid valve in the solenoid valve operation table as shown in the figure is generated and applied to the drive unit 86.

Then, the drive unit 86 applies an electric signal generated by the control unit 85, that is, a solenoid valve operation signal to the solenoid operation display unit 87 and the input / output terminal 81 side.

Accordingly, the solenoid operation display unit 87 displays the operation state of each solenoid valve in accordance with the solenoid valve operation signal applied through the drive unit 86.

In other words, in the test mode, when the ECU side of the vehicle is cut off by the mode selection switching unit 88, and power is applied to the gear stage selection unit 84 so that each stage is selected, the control unit 85 Transistor of the drive unit 86 selected by the diode and the port coupler turns on the LED of the solenoid valve corresponding to each stage provided in the solenoid operation display unit 87, and at the same time, The generated solenoid valve operation signal is outputted to the transmission system through terminals 10 to 15 of the input / output terminals 81 to drive the solenoid valve.

In addition, the check point unit 89 provided with a plurality of terminals allows the operation state of each solenoid valve or transmission oil sensor to be checked using a scope and a multi-meter.

In addition, when the DCC switch 36 shown in FIG. 2 is turned on to perform a damper clutch test, the DCC switch unit 90 receives a damper clutch test signal by turning on the corresponding DCC switch 36. It passes through terminal 81 to the transmission system, allowing the DCC solenoid valve to be driven.

As described above, by implementing the automatic transmission test apparatus to diagnose the failure of the automatic transmission system more quickly with a simple circuit configuration, by performing a variety of tests for each stage regardless of the type of automatic transmission of the vehicle In addition, manual gear shifts are performed on behalf of the vehicle's TCU, making it easy to check for defects in shifts that are difficult to understand with high-scan.

Claims (4)

A plurality of connectors 11 to 14 selected according to the type of the vehicle transmission system and connecting the ECU of the vehicle and the transmission system; A main cable 20 which receives a signal from the ECU through the connectors 11 to 14 and transmits a signal to the transmission system side; A plurality of hose plugs 70 connected to line pressure check ports on the transmission system to serve as adapters; A plurality of hoses 60 for receiving respective line pressures through line pressure check ports connected through the hose plug 70; A gauge set (50) for displaying respective line pressures on the transmission system through the hose (60); The main cable 20 receives a signal from the ECU or generates a signal required for the test and outputs the corresponding signals to the transmission system side for automatic transmission test, damper clutch operation test, stall test, hydraulic system test and voltage test. And a tester 30 to perform; And a power plug (40) connected to the cigarette socket of the vehicle to supply power for performing the operation of the tester (30). The method of claim 1, The tester 30 receives a solenoid valve actuation signal from the ECU through the connectors 11 to 14 connected to the main cable 20 and corresponds to a connector 11 to 14 selected according to the type of the transmission system. Input / output terminal 81 for generating and transmitting a type selection signal and transmitting the solenoid valve operation signal to the transmission system through the connectors 11 to 14 connected to the main cable 20 to drive the solenoid valve. Wow; A transmission type display unit (82) for displaying the type of the transmission system by the transmission type selection signal generated at the input / output terminal (81); A test mode selection switch unit 83 generating and transferring a selection mode signal when an operator selects a mode; A gear stage selector 84 which generates and transmits a gear stage selection signal when an operator selects a gear stage; Control unit 85 for combining the transmission type selection signal transmitted through the input / output terminal 81 and the gear stage selection signal transmitted from the gear stage selection unit 84 to generate a corresponding solenoid valve operation signal Wow; A drive unit 86 for transmitting the solenoid valve operation signal generated by the control unit 85 to the input / output terminal 81; A solenoid operation display unit 87 displaying an operation state of each solenoid valve by a solenoid valve operation signal transmitted through the drive unit 86; Mode for interrupting or transmitting the solenoid valve operation signal of the ECU transmitted through the input / output terminal 81 according to the selection mode signal transmitted from the test mode selection switch unit 83 to the input / output terminal 81. Automatic transmission test apparatus characterized in that it comprises a selection switching unit (88). The method of claim 2, The tester 30 includes a check point unit 89 having a plurality of terminals for checking an operation state of each solenoid valve or transmission oil sensor of the vehicle using a scope and a multi-meter; And a DCC switch unit 90 which generates a damper clutch test signal and transmits the damper clutch test signal to the transmission system through the input / output terminal 81 to drive a DCC solenoid valve when the operator performs the damper clutch test. Gearbox testing device made. Input / output terminal that receives solenoid valve operation signal from ECU of vehicle, generates and transmits transmission type selection signal according to the type of vehicle transmission system, and transmits solenoid valve operation signal to corresponding transmission system to drive solenoid valve. 81; A transmission type display unit (82) for displaying the type of the transmission system by the transmission type selection signal generated at the input / output terminal (81); A test mode selection switch unit 83 generating and transferring a selection mode signal when an operator selects a mode; A gear stage selector 84 which generates and transmits a gear stage selection signal when an operator selects a gear stage; Control unit 85 for combining the transmission type selection signal transmitted through the input / output terminal 81 and the gear stage selection signal transmitted from the gear stage selection unit 84 to generate a corresponding solenoid valve operation signal Wow; A drive unit 86 for transmitting the solenoid valve operation signal generated by the control unit 85 to the input / output terminal 81; A solenoid operation display unit 87 displaying an operation state of each solenoid valve by a solenoid valve operation signal transmitted through the drive unit 86; Mode for interrupting or transmitting the solenoid valve operation signal of the ECU transmitted through the input / output terminal 81 according to the selection mode signal transmitted from the test mode selection switch unit 83 to the input / output terminal 81. Automatic transmission test apparatus characterized in that it comprises a selection switching unit (88).