KR100309154B1 - Shift control method of automatic transmission - Google Patents

Abstract

PURPOSE: A shift control method of an automatic transmission is provided to develop control software capable of controlling a new automatic transmission and the existing automatic transmission through a new automatic transmission test control method of outputting a control signal for on/off control of a solenoid valve without performing hydraulic duty control. CONSTITUTION: A shift control method of an automatic transmission comprises steps of performing sub-routine of initializing a register of CPU(Central Processing Unit) generalizing shift control motions of an automatic transmission(S100); performing sub-routine for initializing all variables and constants used in shift control and performing sub-routine for testing motion state of memory temporarily storing data(S200,S300); performing input data renewal sub-routine of renewing data stored in the memory and performing self-failure diagnosis sub-routine of a control device during testing(S400,S500); deciding gear levels according to current speed, opening degree of a throttle valve, and a signal of a shifting lever and performing shift control sub-routine(S600); performing cut-back solenoid valve control sub-routine for forming line pressure(S700); shifting the gear level into desired gear level with performing sub-routine for performing operation/release work of the solenoid valve and outputting the data into a predetermined value(S800); performing sub-routine performing data communication by international data protocol incase of a demand of self-failure diagnosis communication by a user(S900); performing data communication by international data protocol and transmitting data about dual port memory(RAM)(S1000); and performing control by the period of time, re-performing from the memory test, and stopping all tests when the user demands the end of the test(S1100).

Description

Shift control method of automatic transmission

The present invention relates to a shift control method of an automatic transmission for testing an operating state of an automatic transmission for a light vehicle.

In general, the automatic transmission vehicle determines the target shift stage by the shift pattern stored in the memory according to the driving speed of the throttle valve which varies according to the driver's accelerator pedal operation state, and then shifts to the target shift stage when the shift condition is satisfied. Do this.

Therefore, in the automatic transmission vehicle operating as described above, a corresponding solenoid valve is duty controlled according to a duty control signal output from a shift control device (hereinafter referred to as a TCU) for shifting to a shift stage that targets the shift stage. By forming hydraulic pressure in the oil supplied from the oil pump and supplying the brakes and the clutches, the shift is completed.

In addition, as described above, many automatic transmission test control methods have been developed, and thus played an important role in developing a new automatic transmission according to the change of the times.

However, unlike the conventional technology described above, a test control method for developing an automatic transmission that outputs a predetermined control signal for on / off control of a solenoid valve without performing hydraulic duty control has not been developed. Since the test control method of automatic transmission has not been developed for development, detailed test could not be implemented.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a new automatic transmission test control method for outputting a predetermined control signal for on / off control of a solenoid valve without performing hydraulic duty control. The present invention provides a transmission control method of an automatic transmission for developing a new automatic transmission and a control software for controlling the automatic transmission through performance tests of the previously developed automatic transmission.

1 is a block diagram of a control device to which a shift control method of an automatic transmission according to the present invention is applied.

Figure 2 is a flow chart of the main operation of the automatic transmission shift control method according to the present invention.

3 is a flowchart illustrating a CPU register initialization operation of the automatic transmission shift control method according to the present invention.

4 is a flowchart illustrating a parameter initialization operation of the automatic transmission shift control method according to the present invention.

Figure 5 is a flow chart of the input data update operation of the automatic transmission shift control method according to the present invention.

Figure 6 is a flow chart of the self-fixed diagnostic operation of the automatic transmission shift control method according to an embodiment of the present invention.

7 is an operation flowchart of an automatic transmission shift stage control method according to the present invention.

8 is a flowchart of a shift control operation during shifting of a shift control method of an automatic transmission shift stage according to the present invention;

9 is a flow chart of N → D control operation of the automatic transmission shift control method according to the present invention.

10 is a flowchart illustrating a method for controlling an automatic transmission cutback solenoid valve according to the present invention.

11 is a flowchart illustrating a method of controlling a shift stage of an automatic transmission according to the present invention.

12 is a shift pattern diagram of an automatic transmission according to the present invention.

Figure 13 is a state diagram of the solenoid valve operation of the automatic transmission according to the present invention.

Shift control method of the automatic transmission of the present invention for achieving the above object,

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a control device to which a shift control method of an automatic transmission according to the present invention is applied includes driving a vehicle in which a state of a vehicle is changed according to a driving state of a vehicle, and a corresponding output signal is output to output a corresponding electric signal. State sensing means 10 and the signal output from the vehicle driving state sensing means 10 is applied to read and output a predetermined control signal for testing the operating state of the automatic transmission, and outputs data communication and test results A multi-tester which performs data communication with the TCU 20 and data communication protocols with the TCU 20 to read the operation state of the vehicle and the self-diagnosis code stored in the predetermined setting memory of the TCU 20 ( 30) and a personal computer (hereinafter referred to as a PC) 40 for performing data communication with the TCU 20 according to a data communication protocol to monitor a test state of the TCU 20. And shifting according to the shift test control signal of the automatic transmission output from the TCU 20 and turning on the vehicle inspection lamp according to the vehicle inspection request signal output according to the failure of the sensing means in the vehicle driving state. Means (50).

The vehicle driving state detecting unit 10 detects the degree of opening of a throttle valve whose opening / closing state is variable in association with the operation state of the accelerator pedal, and outputs a corresponding signal to the throttle valve opening degree detecting unit 11 and driving of the vehicle. A vehicle speed detector 12 that detects a speed and outputs a corresponding signal, and a shift lever detector 13 that detects a signal that varies according to a driver's shift lever operation state and outputs a predetermined electric signal; To detect the rotational speed of the turbine shaft of the torque converter connected to the input shaft of the transmission and output a corresponding signal, and detect the rotational speed of the crankshaft variable according to the operating state of the engine. The engine speed sensor 15 outputs a corresponding signal.

The driving means 50 is controlled according to a control signal output from the TCU 20, the first drive unit 51 for shifting the gear shift stage to the target gear shift stage, and the vehicle check request signal output from the TCU 20. In accordance with the present invention, the driver includes a second driving unit 52 for lighting a lamp for requesting a vehicle inspection.

The operation state of the shift control method of the automatic transmission according to the present invention by applying the device made by the above-described configuration will be described with reference to FIG.

When the user applies power to the TCU 20, which is an automatic transmission test control device, to test the operating state of the vehicle automatic transmission, the TCU 20 registers a register of a CPU, which is a microprocessor, which controls the shift control operation of the automatic transmission. A subroutine to initialize is performed (S100).

The TCU 20 having initialized the CPU register performs a subroutine for initializing all variables and constants used for shift control, and a subroutine for testing an operation state of a memory for temporarily storing input / output data. Perform (S200, S300).

In addition, an input data update subroutine for newly updating data input and stored in the memory and a self-diagnosis subroutine for ensuring the reliability of the control device during the test are performed (S400 and S500).

The TCU 20 determines the shift stage according to the current vehicle speed, the throttle valve opening degree, and the shift lever (inhibitor) signal when the test apparatus is intact, and shift control for shifting to the determined shift stage. A subroutine is performed (S600).

As the shift control subroutine is performed in the above, the TCU 20 performs the cutback solenoid valve control subroutine for forming the line pressure by controlling the operation of the cutback solenoid valve according to the change in the opening amount of the input throttle valve (S700). ).

In addition, by performing a subroutine for performing the operation / release operation of the solenoid valve according to the on-off state of the target shift stage and the cutback solenoid valve determined above, the shift stage is shifted to the target shift stage, and is detected according to the shift state. The data is output as a predetermined value (S800).

In addition, when a vehicle inspection request occurs due to a failure of a driving state detection means during a test process of an automatic transmission, a user performs data communication according to the international data communication protocol when a self failure diagnosis communication request using the multi tester 30 shown in FIG. A subroutine is performed (S900).

The data communication using the multi tester 30 is possible only in a real vehicle test, and it is possible to monitor whether the detection means signal of the TCU 20 is normal, the generated trouble code and the initialization state, and the monitoring mode is the throttle valve opening amount. (TPS), engine speed, vehicle speed, shift lever, current input of shift stage and solenoid valve driving status, and current data mode (Current Data Mode) to monitor the type of memory (ROM) of the current TCU 20 It is composed of a fault code display mode for displaying and a running data display mode for displaying a generated fault code and a reset related code.

In the above, in the current data mode (Surrent Data Mode), the solenoid valve driving state can monitor the operation state of the air conditioner switch, kick-down switch, accelerator pedal switch, respectively.

The TCU 20 performs a memory (RAM) monitoring subroutine so that when the user wishes to monitor the state of the TCU 20 using the personal computer (PC) 40 shown in FIG. Data communication is performed according to a data communication protocol, and data related to dual port memory (RAM) is transmitted during emulation and data monitoring, which are not shown in the drawing (S1000).

The TCU 20 performing the above-described subroutine performs control for a period of 10 ms, which is a predetermined time in consideration of the optimality of the hydraulic response, and accordingly waits for 10 ms of the predetermined time and then restarts the memory test subroutine S300. In operation S1100, all the tests are stopped when the user requests the test termination.

As shown in FIG. 3, in the CPU register initialization subroutine S100, as the CPU register initialization method, an input / output pod which manages input / output of data is initialized and an interrupt is generated when an interrupt occurs during control. Initialize the relevant port for the external communication, and initialize the related port for performing data communication in accordance with the international data communication protocol when data communication from the outside and return to the main routine (S110, S120, S130).

In the parameter initialization subroutine (S200), the monitoring version initializes the memory (RAM) area in which the fault code is stored when the battery is first connected, and the shift lever is the D stage to make the shift stage 1 speed after the ignition is turned on. It is to control the initial value of the shift and the solenoid valve is to control the 1-speed driving state.It determines the initial connection state of the battery and initializes the memory (RAM) that stores the fault code if the battery is the initial connection state. The gear stage is fixed at 1 speed (S210, S220, S230).

However, when the battery is in the continuous connection state instead of the initial connection state in the S210, the TCU 20 does not perform the step of initializing the memory (RAM), but immediately performs the step of fixing the speed change stage to 1 speed. do.

Therefore, in step S230, the TCU 20 that fixes the shift stage at 1 speed initializes a fault diagnosis variable that stores fault data, initializes all shift related variables, and returns to the main routine (S240, S250).

In S400, the input data update subroutine detects and calculates the opening amount TPS of the throttle valve, which is variable according to the driver's accelerator pedal operation, and configures the calculated throttle valve opening degree variation θ1 as an index. Perform (S410),

After detecting and calculating the engine speed varying according to the engine operating state, a subroutine constituting the calculated engine speed change amount θ2 as an index is performed (S420).

After detecting and calculating a vehicle speed No, which is variable according to the driving state of the vehicle, a subroutine constituting the calculated vehicle speed change amount θ3 as an index is performed (S430).

The throttle valve opening change amount θ1 and the vehicle speed change amount θ3 are performed after detecting a shift lever (inhibitor) position whose position is changed according to the driver's shift lever operation state and performing a subroutine constituting the index θ4. A subroutine for calculating an index is performed (S440 and S450) to update the input data and return to the main routine.

The self-diagnosis subroutine of the (S500), and compares the output signal is variable according to the operation state of the solenoid valve to perform a subroutine for outputting a predetermined failure code and the check request signal when a failure occurs (S510),

The subroutine outputs a predetermined failure code and a check request signal to the second drive unit 52, which is the driving means 50, in the event of a failure, by comparing the output states according to the variable state of the shift lever shifted by the driver. Perform (S520),

Comparing the state of the engine speed sensor which detects the operating state of the engine and outputs a predetermined signal, and outputs a predetermined fault code and a check request signal to the second drive unit 52, which is the driving means 50, when a failure occurs. Perform a subroutine (S530),

The second drive unit 52, which is a driving unit 50, detects a signal varying according to a driving state of the vehicle and compares the state of the vehicle speed sensor that outputs a predetermined electric signal to generate a predetermined fault code and a check request signal when a fault occurs. Performs a subroutine that outputs to (S540),

The second drive unit 52, which is a driving means 50, provides a predetermined fault code and a check request signal in the event of a failure by comparing and determining a signal of a throttle valve opening degree sensor that interlocks and outputs a predetermined signal according to the driver's accelerator pedal operation state. Perform a subroutine to output to (S550),

According to the driver's output request, the fault code stored in the memory flashes the fault code output lamp and performs a subroutine for outputting a predetermined fault code (S560) to input the sensor signal to the TCU 20. And TCU 20 output actuator driving signal, and if there is any abnormality, it saves a predetermined fault code in memory, and flashes the lamp with fault code data stored in user's fault code output request memory. Then return to the main routine

In S600, the shift control subroutine determines the shift stage according to the current vehicle speed, the throttle valve opening amount, and the shift lever (inhibitor) input, and prevents the engine from overrun and checks the shift-related shift prohibition. And, as a subroutine for confirming the shift control of the shift during the shift and performing the final shift,

Performing a subroutine for determining the shift stage according to the throttle opening degree, the vehicle speed, and the shift lever (inhibitor) signal which are varied by the shift pattern shown in FIG. 12 (S610),

Performing a subroutine for preventing overrun of the engine according to the automatic transmission test (S620);

Performing a shift prohibition check subroutine to confirm a shift-related shift prohibition matter (S630);

Performing a shift control subroutine during shifting in which shifting and stopping of the control are determined according to a current time control position when shifting occurs again during shift control (S640);

Step S650 is performed by controlling the solenoid valve 2 according to an input signal according to the driver's shift lever to perform an N → D control subroutine, which is a shift control for securing a shift feeling in a static shift (S650), and returning to the main routine. Consists of

In operation S640, the shift control method during shifting determines whether a shift generation condition is satisfied while shift control is being performed (S641).

When the shifting condition is satisfied again during the shift control, the TCU 20 determines whether the shift control being performed is the upshift shifting speed from 1 to 2 speed as the upshift shifting control. (S642).

When the shift stage is shifted up from the 1st speed to the 2nd speed, the TCU 20 determines whether an upshift shift control for shifting the shift speed from the 2nd speed to the 3rd speed is generated (S643).

When the 2 → 3 upshift shift occurs again during the 1 → 2 upshift shift, the TCU 20 performs shift delay control for preparing the duty output to shift the shift stage to the target shift stage without shift shock. It is determined whether there is (S644).

When the shift delay control is performed after the 2 → 3 upshift shift is generated during the 1 → 2 upshift shift, the TCU 20 performs 2 → during the 1 → 2 upshift shift in the memory map stored in the memory. While outputting a duty control signal for performing the 3 upshift shifting, a predetermined control signal for performing the shift delay control is output to the first driver 51 of the driving means 50 and returned to the main routine (S645). ).

However, when the shift delay control is not performed after the 2 → 3 upshift shift is generated during the 1 → 2 upshift shift in S644, the TCU 20 performs the upshift shift during the normal upshift shift control. The control signal to be outputted to the first drive unit 51 of the drive means 50 and returned to the main routine (S646).

In addition, when the down shift shift occurs during the up shift shift in S643, the TCU 20 transmits a control signal for performing the down shift shift during the up shift shift control to the first driver 51 of the driving means 50. Output and return to the main routine (S647).

When the shift stage is in the downshift shift control after satisfying the condition that the shift occurs again during the shift control in S642, the TCU 20 determines whether the upshift shift has occurred (S648).

When the upshift shift is generated during the downshift shift control, the TCU 20 controls the upshift shift control during the downshift shift control, the control signal for performing the shift control during the delay shift, and the normal. The control signal for performing the upshift shift control during the in-down shift shift is output to the first driver 51 of the driving means 50 and returned to the main routine (S649).

However, when the downshift shift occurs during the downshift shift control in S648, the TCU 20 may include a control signal for performing downshift shift control during downshift shift and a control signal for performing shift shift control during delay shift. The control signal for performing the down shift shift control during the normal down shift shift is output to the first driver 51 of the driving means 50 and returned to the main routine (S699).

The N → D control subroutine, which is the shift control in S650 above, detects the throttle valve opening amount and the vehicle speed when released from the N-range or P-range position according to the driver's shift lever operation, and as shown in Fig. 13, the solenoid valve. By turning on a predetermined time to secure the hydraulic pressure during the shift to improve the shifting feeling, if the N → D shift control condition is satisfied, the TCU 20 determines whether the current N → D control (S651, S652).

In the case where N → D control is currently performed, a control signal for performing ongoing N → D control is output to the first driving unit 51 of the driving means 50 and returned to the main routine (S653).

However, if the current control is not in the N → D control (S652), the TCU 20 determines whether the output throttle valve opening amount, the vehicle speed, the shift lever signal is included in the shift prohibition condition (S654).

When the throttle valve opening amount, the vehicle speed, and the shift lever signal outputted above are included in the shift prohibition condition, the TCU 20 performs a subroutine for ending all shifts and returns to the main routine (S655).

However, when the opening amount of the throttle valve, the vehicle speed, and the shift lever signal output from the step S654 are not included in the shift prohibition condition, the TCU 20 combines the solenoid valves 1 and 2 according to the shift target value according to the shift condition. And adjusting the holding time to perform 1 → 2, 2 → 3 upshift or 3 → 2, 2 → 1, 3 → 1 downshift shift subroutine and return to the main routine (S656).

In the cutback solenoid valve control subroutine (S700), the control method reads the cutback solenoid valve operating condition 2 according to the throttle valve opening amount change rate (θ) with respect to the throttle valve opening amount, and the throttle valve opening amount with respect to the throttle valve opening amount. The cutback solenoid valve operating condition 1 is read according to the change rate θ, and the TCU 20 judges whether the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 read above is satisfied (S710, S720, S730). .

When the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 is satisfied in the above, the TCU 20 transmits a control signal for turning on the cutback solenoid valve for forming the line pressure, the first driving unit of the driving means 50. Output to 51 and return to the main routine (S740).

However, when the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 is not satisfied in step S730, the TCU 20 transmits a control signal for turning off the cutback solenoid valve to the first driving unit of the driving means 50. 51) and return to the main routine (S731).

The solenoid valve motion detection subroutine (S800) for shifting to the determined target shift stage, and extracting control and delay time from the map to determine the operation and release state of the solenoid valve,

It is determined whether the predetermined control section is included in the T0 control section (S810).

When the predetermined control section is included in the T0 control section, the TCU 20 performs the T0 section control and determines whether the T2 control section is being performed (S830).

However, when the predetermined control section is included in the T1 control section in S810, the TCU 20 performs a step S830 to determine whether to perform the T1 section and the T2 control section.

However, when the predetermined control section does not include the T0 or T1 control section, it is determined whether the section T2 is being performed immediately (S830).

Therefore, when the predetermined control section is performing the T2 section, the TCU 20 performs the T2 section and determines whether the T0, T1, and T2 section control has been completed (S840, S850).

When the T0, T1, and T2 section control is completed in the above, the TCU 20 performs a subroutine to end the shift control and returns to the main routine (S860).

However, when the predetermined control section is not the T2 control section or when the control of the T0, T1, and T2 sections is not completed, the control unit returns to the main routine.

The above embodiments are described as the most preferred embodiments, and the present invention is not limited thereto, and the embodiments can be easily described from the above embodiments.

As described above, the present invention provides a new automatic transmission test control method for outputting a predetermined control signal for on / off control of a solenoid valve without performing hydraulic duty control. It is easy to develop control software for controlling a new automatic transmission.

Claims (23)

In the shift control method of the automatic transmission for outputting a predetermined control signal for the on / off control of the solenoid valve without performing the hydraulic duty control, Performing a subroutine for initializing a register of a CPU, which is a microprocessor in charge of shift control operation of the automatic transmission, when a user applies power to the automatic transmission test control device to test an operation state of the vehicle automatic transmission; Performing a subroutine for initializing all variables and constants used for shift control, and performing a subroutine for testing an operation state of a memory for temporarily storing input / output data; Performing an input data update subroutine for newly updating data input for the test and stored in the memory and a self failure diagnosis subroutine of the control device during the test; Determining a shift stage according to a current vehicle speed and a throttle valve opening degree and a signal of a shift lever (inhibitor), and performing a shift control subroutine for shifting to the determined shift stage; Performing a cutback solenoid valve control subroutine for forming a line pressure by controlling the operation of the cutback solenoid valve according to the change in the opening amount of the input throttle valve; A subroutine for performing operation / release operation of the solenoid valve is performed according to the determined target shift stage and the cutback solenoid valve on / off state, and the shift stage is shifted to the target shift stage, and the data detected according to the shift state is predetermined. Outputting a value of? Performing a subroutine for performing data communication by an international data communication protocol when a user requests a self-diagnosis diagnosis communication using a multi-tester when a vehicle inspection request occurs due to a failure of a driving state detecting means during a test process of an automatic transmission; When the user wants to monitor the state of the TCU using a personal computer (PC), performing data communication according to international data communication protocol, and transmitting data related to the dual port memory (RAM) during emulation and data monitoring; ; The control is performed at a predetermined time period in consideration of the optimality of the hydraulic response, and accordingly, after performing the predetermined time, the memory test subroutine is re-executed, and the user stops all the tests when the user ends the test. A shift control method of an automatic transmission, characterized in that. The method according to claim 1, the data communication using the multi-tester is possible only in the real vehicle test and can monitor the normal status of the detection means signal of the TCU and the generated fault code and initialization state, the monitoring mode, A current data mode for monitoring the throttle valve opening amount TPS, the engine speed, the vehicle speed, the shift lever, the input of the shift stage, and the solenoid valve driving state; A fault code display mode for displaying the type of memory (ROM) of the current TCU 20; A shift control method for an automatic transmission, comprising a running data display mode for displaying a generated fault code mill reset code. The shift control method according to claim 2, wherein the solenoid valve driving state in the current data mode includes monitoring an operating state of the air conditioner switch, the kick down switch, and the accelerator pedal switch, respectively. The method according to claim 1, wherein the CPU register initialization subroutine, the CPU register initialization method, initializes the input / output pod that manages the input / output of the data, initializes the associated port for performing the interrupt in the event of an interrupt during the control, In the data communication in the shift control method of the automatic transmission comprising the step of initializing the relevant port for performing data communication according to the international data communication protocol and returning to the main routine. The shift version of claim 1, wherein the monitoring version of the parameter initialization subroutine initializes a memory (RAM) area in which a fault code is stored when the battery is first connected, and shifts the speed to the first stage after the ignition is turned on. It is to control the initial value related to the shift, and to control the solenoid valve in the 1-speed driving state. Determining an initial connection state of the battery and initializing a memory (RAM) for storing a fault code and fixing the shift stage to a first speed when the battery is in an initial connection state; And shifting the shift stage to 1 speed in the above step, initializing a fault diagnosis variable that stores fault data, initializing all shift related variables, and returning to the main routine. The method of claim 5, wherein when the battery is in a continuous connection state instead of an initial connection state, an automatic operation including performing a step of immediately fixing the shift stage to 1 speed without performing a step of initializing a memory (RAM) is performed. Transmission control method of the transmission. The subroutine according to claim 1, wherein the input data update subroutine detects and calculates the opening amount TPS of the throttle valve which varies according to the driver's accelerator pedal operation, and configures the calculated throttle valve opening degree change amount θ1 as an index. Performing the step; Performing a subroutine constituting an index of the engine speed change amount θ2 calculated after detecting and calculating an engine speed variable according to the engine operating state; Performing a subroutine constituting an index of a vehicle speed change amount θ3 calculated after detecting and calculating a vehicle speed No, which is varied according to the driving state of the vehicle and calculated; The throttle valve opening change amount θ1 and the vehicle speed change amount θ3 are performed after detecting a shift lever (inhibitor) position whose position is changed according to the driver's shift lever operation state and performing a subroutine constituting the index θ4. And performing a subroutine for calculating an index, and updating the input data and returning the input data to the main routine. The method of claim 1, wherein the self-diagnosis subroutine comprises the steps of: comparing the output signal which is variable according to the operation state of the solenoid valve and performing a subroutine that outputs a predetermined fault code and a check request signal when a fault occurs; Performing a subroutine for comparing the output state according to the variable state of the shift lever shifted by the driver and outputting a predetermined fault code and a check request signal when a fault occurs; Performing a subroutine that detects an operation state of the engine and compares a state of an engine speed sensor to output a predetermined signal, and outputs a predetermined fault code and a check request signal when a fault occurs; Performing a subroutine that detects a signal varying according to a driving state of the vehicle and compares and determines a state of a vehicle speed sensor for outputting a predetermined electric signal, and outputs a predetermined fault code and a check request signal when a fault occurs; Performing a subroutine for outputting a predetermined fault code and a check request signal in the event of a failure by comparing and determining a signal of a throttle valve opening degree detection sensor which outputs a predetermined signal in association with an accelerator pedal operation state of a driver; According to the driver's output request, the fault code stored in the memory flashes the fault code output lamp and performs a subroutine for outputting a predetermined fault code, so that the sensor signal and the TCU output actuator driving signal are input to the TCU. Determining whether there is an abnormality of the call, storing the predetermined fault code in the memory when an error occurs, and returning to the main routine after outputting the fault code data stored in the user's fault code output request memory by flashing a lamp. Shift control method of the automatic transmission made by. The shift control subroutine of claim 1, wherein the shift control subroutine determines the shift stage according to the current vehicle speed, the throttle valve opening amount, and the shift lever (inhibitor) input, prevents the engine from overrun, and checks the shift-related shift prohibition. , As a subroutine for confirming the shift control during the shift and performing the final shift, Performing a subroutine for determining the shift stage according to the throttle opening degree, the vehicle speed, and the shift lever (inhibitor) signal which are varied by the shift pattern; Performing a subroutine for preventing overrun of the engine according to the automatic transmission test; Performing a shift prohibition check subroutine to confirm a shift-related shift prohibition; Performing a shift control subroutine during shifting which determines the transition of the control and the stop according to the current time control position when the shift occurs again during shift control; An automatic transmission comprising a step of performing a N → D control subroutine for controlling a solenoid valve 2 according to an input signal according to a driver's shift lever operation to secure a shifting feeling during a static shift, and returning to a main routine. Shift control method. The method of claim 9, wherein the shift control method during shifting comprises: determining whether a shift occurs again while the shift control is performed; Determining whether the shift control being performed is an upshift shift control when a shift occurs during the shift control in the step; Determining whether the shift generated during the shift control is an upshift shift when the shift control being performed in the step is an upshift shift; Determining whether shift delay control is being performed when upshift shift control occurs during the upshift shift control in the step; If shift shift control is performed after the up shift shift control is generated during the up shift shift control in the above step, a control for performing shift shift control while outputting a control signal for performing the up shift shift control during the up shift shift control. A shift control method of an automatic transmission comprising a signal output and a return to a main routine. The method according to claim 10, wherein if the shift delay control is not performed after the upshift shift control is generated during the upshift shift control, the automatic shift includes shifting the shift during the normal upshift shift control and returning to the main routine. Transmission control method of the transmission. The automatic transmission according to claim 10, wherein in determining whether a shift control signal is output during shifting, when the downshift shifting occurs during the upshift shifting, the automatic transmission includes performing downshift shifting during the upshift shifting control and returning to the main routine. Shift control method. The method of claim 9, further comprising: determining whether an upshift shift occurs while the downshift shift is performed when the shift control being performed after the shift shifting control is satisfied during the downshift shift control is satisfied; When the upshift shifting occurs during the downshift shifting control, it is stored in the map of the memory to perform the upshift shifting control during the downshift shifting control and the shifting control during the shift delay control, and during the normal downshift shifting. A shift control method of an automatic transmission, comprising returning to a main routine after performing an upshift shift control. The method of claim 13, wherein when downshift shifting occurs during downshift shifting control, downshift shifting control is performed during downshift shifting stored in a memory map, and shift control during shift delay control is performed. A shift control method for an automatic transmission, comprising performing a down shift shift control during the shift and returning to the main routine. The shift control subroutine detects the throttle valve opening amount and the vehicle speed when the shift control subroutine is released from the N range or the P range position according to the driver's shift lever operation to turn on the solenoid valve for a predetermined time to secure hydraulic pressure during shifting. As to improve If the N → D shift control condition is satisfied, determining whether the current is under N → D control; The shift control method of the automatic transmission comprising the step of performing the ongoing N → D control and returning to the main routine when the current N → D control. The method according to claim 15, further comprising: determining whether the output throttle valve opening amount, the vehicle speed, and the shift lever signal are included in the shift prohibition condition when the current is not under N → D control; When the throttle valve opening amount, the vehicle speed, and the shift lever signal output in the above step are included in the shift prohibition condition, a shift control of the automatic transmission comprising performing a subroutine for ending all shifts and returning to the main routine. Way. The method according to claim 16, wherein when the output throttle valve opening amount, the vehicle speed, and the shift lever signal are not included in the shift prohibition condition, the combination and the holding time of the solenoid valves 1 and 2 according to the shift target value are adjusted according to the shift condition. A shift control method for an automatic transmission comprising performing a 1 → 2, 2 → 3 upshift or 3 → 2, 2 → 1, 3 → 1 downshift shift subroutine and returning to the main routine. The method of claim 1, wherein the cutback solenoid valve control subroutine control method reads the cutback solenoid valve operating condition 2 according to the throttle valve opening amount change rate (θ) with respect to the throttle valve opening amount, and the throttle valve opening amount with respect to the throttle valve opening amount. Reading cutback solenoid valve operating condition 1 according to the change rate? To determine whether the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 is satisfied; When the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 is satisfied in the above step, an automatic transmission comprising outputting a control signal for turning on the cutback solenoid valve for forming the line pressure and returning to the main routine. Shift control method. The shift control of the automatic transmission according to claim 18, wherein when the cutback solenoid valve operating condition 1 or the cutback solenoid valve operating condition 2 is not satisfied, a control signal for turning off the cutback solenoid valve is output and returned to the main routine. Way. The solenoid valve motion detection subroutine of claim 1, wherein the shift is performed to the determined target speed change stage, and the control and delay time are extracted from the map to determine the operation and release state of the solenoid valve. Determining whether a predetermined control section is included in the T0 control section; When the predetermined control period is included in the T0 control section, performing the T0 section control and determining whether the T2 control section is being performed; If the predetermined control section is performing the T2 section, performing the T2 section and determining whether the T0, T1, and T2 section control has been completed; If the step T0, T1, T2 section control is completed in the above step, the shift control method of the automatic transmission comprising a subroutine for ending the shift control, and returning to the main routine. 21. The shift control method according to claim 20, further comprising returning to the main routine when the predetermined control section is not the T2 control section or when the control of the T0, T1, and T2 sections is not completed. 21. The shift control method according to claim 20, further comprising: performing a T1 section and determining whether the T2 control section is being performed when a predetermined control section is included in the T1 control section. The shift control method according to claim 22, further comprising the step of determining whether the T2 section is being performed when the predetermined control section does not include the T0 or T1 control section.

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