JPH07248280A - Failure-code erasing device for vehicle and control method thereof - Google Patents

Abstract

PURPOSE: To automatically and efficiently erase the failure code taking into consideration the operating condition of a vehicle without using any special device by providing a counter or the like to count the number of operation of a starter switch of the vehicle on a control part. CONSTITUTION: A failure code erasing device comprises a starter switch IS and a transmission control part 60. When the switch IS is operated, the prescribed value is increased in a counter of the control part 60 to measure the number of operation of the switch IS. When a new failure code is stored in a memory, the value of the counter is initialized. When no new failure code is stored, the control part 60 judges whether or not the number of operation of the switch IS reaches the set value. When the counter value exceeds the set value, the failure code stored in the memory is erased. When the switch IS is operated with the set number of operation, the failure code is automatically controlled to reduce the required time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fault code erasing device for a vehicle such as an automatic transmission vehicle and a control method therefor. After displaying the presence / absence of a failure to the driver by using, for example, the shift control unit (EC
(U) A fault code erasing device for a vehicle for erasing a fault code stored in a memory and a control method thereof.

[0002]

2. Description of the Related Art Regarding a vehicle failure, an automatic transmission vehicle will be exemplified below. Generally, when a failure occurs in an automatic transmission vehicle, the failure code corresponding to the part where the failure occurs is processed so as to be stored (or stored) in the memory of the shift control unit, and then the driver When a maintenance person repairs / maintains a vehicle, the failure code stored in the memory is output to determine the presence / absence of the vehicle failure and its status, and the vehicle is repaired or serviced.

As described above, after the maintenance staff has repaired the part of the vehicle in which the malfunction has occurred by using the malfunction code, the malfunction code stored in the memory in the shift control unit should be erased. If this is not erased, the failure code remains, and the normal part that has already been repaired and is not in failure is always considered as a failure, and the failure status of the vehicle becomes unclear.

In order to solve the above-mentioned problems, conventionally,
(1) When the temperature of the oil for hydraulic control of the automatic transmission has reached a certain temperature or higher from the starting point where the fault code has occurred for a preset number of times or more, the shift control section automatically deletes the fault code The automatic erasing method, or (2) the user manually multi-user tester (multi user t
It uses a manual (forced) erasing method to forcefully erase the fault code stored in memory using (ester).

However, in the first conventional automatic erasing method, the failure code is erased depending on the number of times the temperature of the oil reaches the set temperature. There is a problem that fault codes are accumulated for a long period of time. In addition, the second conventional erasing method requires specific equipment such as a multi-user tester, so that the work is indirect and it is difficult to efficiently erase the fault code.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and problems of the prior art without using any special device for erasing the fault code, and
An object of the present invention is to provide a fault code erasing device for a vehicle such as an automatic transmission vehicle that automatically and efficiently erases a fault code in consideration of the operating state of the vehicle, and a control method thereof. Specifically, it is an object of the present invention to provide a fault code erasing device for a vehicle such as an automatic transmission vehicle and a method for controlling the fault code, which automatically erases the fault code in association with the operation of a start switch of the vehicle. It is in. Another object of the present invention is to automatically delete the failure code according to the driving state of the vehicle,
An object of the present invention is to provide a failure code erasing device for a vehicle such as an automatic transmission vehicle and a control method thereof.

As means for achieving the above-mentioned object,
A first configuration of a vehicle fault code erasing device according to the present invention includes a vehicle start switch that outputs an electrical signal in response to a vehicle start, a memory that stores a vehicle fault code, and an operation of the start switch. And a counter for counting the number of times,
When the start switch is actuated, a predetermined value is increased in the counter for measuring the number of actuations of the start switch in order to erase the failure code stored in the memory, and the failure code stored in the memory is increased. When a new failure code is stored by judging whether or not it has occurred, the counter value is initialized, and when the new failure code is not stored, the counter value and the failure code are erased. Control unit for deciding whether or not the number of actuations of the start switch has reached a corresponding set value, and erases the failure code stored in the memory when the counter value is equal to or more than the set value. Have and.

[0008] As means for achieving the above object,
A second configuration of the vehicle failure code erasing device of the present invention has a predetermined counter for measuring the number of times the vehicle start switch is actuated to erase the failure code stored in the memory in response to the number of times the vehicle is started. Setting a value, and determining the operating state of the start switch, incrementing the counter by +1 when the start switch is activated, and determining whether a failure code is stored in the memory. If a new failure code is stored in the memory, after the counter is initialized, the operating state of the start switch is determined again, and if a new failure code is not stored, the Determining the magnitude relationship between the value of the counter and the set value corresponding to the number of times the start switch has been operated to erase the failure code; and the value of the counter is less than or equal to the set value. If it has the steps of erasing the fault code.

As means for achieving the above-mentioned object,
A third configuration of the vehicle failure code erasing device of the present invention detects an engine speed of a vehicle engine and outputs an electrical signal corresponding to the engine speed, and an engine speed sensing unit of the vehicle. Then, a turbine rotation speed sensing unit that outputs an electrical signal corresponding to it, and an output rotation speed sensing unit that senses the rotation speed output to the transmission of the vehicle and outputs the corresponding electrical signal, A slot valve sensing unit that senses an opening amount of a slot valve of a vehicle and outputs an electrical signal corresponding to the opening amount; and a switch unit that outputs an electrical signal corresponding to a selected state of the slot valve, and (a) It has a memory for storing a vehicle fault code, a timer and a counter, and (b) is set at a predetermined time in the timer for erasing the fault code stored in the memory when power is applied. Then, after setting a predetermined value in the counter, (c) if the failure code stored in the memory indicates a failure of the engine speed sensing portion, input the turbine speed and stop the engine. (D) If a malfunction occurs in the engine speed sensing part and the malfunction occurs in the various sensing parts, the turbine speed and the output speed are sensed to detect the engine speed. It is judged whether or not the engine is stopped. (E) If no failure occurs in the engine speed sensing portion, the engine speed is sensed to determine whether the engine is stopped, and then the engine is stopped. If the opening amount of the throttle valve is equal to or more than the set amount for erasing the fault code, the current state of the gear shift lever and the state of the driving mode are judged, and the gear shift lever is in the first stage in the initial state. , Running If the mode is in economic mode, the counter is set to 1, and if the next gearshift lever has two gears, and if it is in economic mode, the gearshift lever and the gearshift lever are two gears when traveling is judged. When the power mode is set, the counter is set to 2, and when the next gearshift lever has three gears and the traveling mode is the power mode, the gearshift lever and the traveling mode are determined again and the gearshift lever has three gears. Yes, if the economy mode, 3 counter
If the speed change lever is set to 4 and the next speed change lever is in the 4th speed, and the economy mode is selected, the speed change lever and the traveling mode are determined, and the speed change lever is in the 4th speed, and the counter is initialized in the power mode. And a control unit for erasing the failure code.

As means for achieving the above-mentioned object,
The first configuration of the vehicle fault code erasing method of the present invention is to initialize all variables when power is applied and set a counter and a timer to predetermined values, and a vehicle for erasing a fault code. Of the operating state of the starting switch, engine stop, vehicle stop, and whether or not the conditions for the maximum value of the throttle valve opening amount above the set amount are satisfied, and the current gearshift lever is one stage. A first step of deciding that the traveling mode is the economic mode, incrementing the timer by 1 to set the counter to 1 and erasing the fault code when the shift lever is in the first step and in the economic mode; After the completion of one stage, if the speed change lever is in two steps, the economy mode is also in two steps, and the traveling mode is in power mode, the timer is incremented by 1 and the counter is set to 2 to cause a failure. And completing stage second step of erasing the over-de, after the second step completed, a shift lever is three stages,
When the driving mode is the power mode, the speed change lever is the third gear, and the driving mode is the economic mode, the timer is incremented by 1, the counter is set to 3, and the failure code is erased. Step and after completion of the third step, the timer and the counter are initialized when the speed change lever is at the 4th speed, the traveling mode is at the economic mode, and the speed change lever is at the 4th speed and the traveling mode is at the power mode. After that, there is a step of erasing the failure code and ending, and further, a step of determining whether or not the condition for erasing the failure code is satisfied, and a failure of the engine speed sensing portion. If it is, the turbine speed is lower than the set value and it is judged that the engine is stopped, and a failure occurs in the engine speed sensing part and a failure occurs in other various sensing parts. If the engine speed is detected, the engine speed will be determined by detecting the turbine speed and the output speed, and if the engine speed sensing part has not failed, the engine speed will be sensed and the engine will be stopped. And a step of determining the magnitude relationship between the opening amount of the throttle valve and the set amount for erasing the fault code when the engine is stopped.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a vehicle fault code erasing device and a control method thereof according to the present invention will be described with reference to the accompanying drawings.

First, a fault code erasing device for an automatic transmission vehicle and a control method therefor, which is applied to an automatic transmission vehicle, according to a first embodiment of the present invention will be described.

As shown in FIG. 1, the first aspect of the present invention
The configuration of the fault code erasing device for an automatic transmission vehicle according to the embodiment includes a start switch IS and a shift control unit 60 having an input stage connected to the output stage of the start switch IS. The throttle valve sensing unit 10, the engine speed sensing unit 20, the turbine speed sensing unit 30, the output speed sensing unit 40, the mode selection switch CS in the switch unit 50, the inhibitor switch IHS, and the display unit 70 shown in FIG.
And the relationship with the shift control unit 60 will be described as a second embodiment.

The operation of the fault code erasing device for the automatic transmission vehicle according to the first embodiment of the present invention, which comprises the shift control unit 60 and the starting switch IS in the switch unit 50, will be described with reference to the flow chart shown in FIG. The shift control unit 60 includes a microcomputer, an internal memory from which data can be read and written, and a P that stores a processing program.
It has a ROM. The operation of the shift control unit 60 described below is performed as software by loading the processing program stored in the PROM into the microcomputer. Data necessary for the program processing is stored in the internal memory and read from the internal memory. The counter, which will be described below, is realized by increasing or decreasing the contents of a predetermined address in the internal memory by software. Further, when a failure occurs in the automatic transmission vehicle, a failure detection program (not shown) operates to store the failure state in the internal memory.

When the key switch of the vehicle is turned by a user (driver, maintenance staff, etc.) and power is applied, the shift control unit 60 causes the shift switch 60 to operate the start switch (IS) to erase the failure code. A counter for measuring is set as software in the internal memory in the form of a variable (step 110: S110 in FIG. 2).

Next, the shift control unit 60 determines the operating state of the start switch IS by using an electric signal input from the start switch (ignition switch) IS (S120).

When the start switch IS is operating, the shift control unit 60 checks whether or not the internal memory (not shown) is abnormal. In this way, after checking the stored contents of the internal memory, the shift control unit 60 determines whether or not a failure or abnormal state is stored in the internal memory (S140).

If the internal memory stores the failure code in the completed state during the previous running as it is, that is, if a new failure code is not stored, the shift control unit 60 operates. It is determined that no abnormality occurs in the memory, and the set counter is incremented by +1. If the data stored in the internal memory has been converted due to the completion of the previous run, it is determined that an abnormality has occurred in the internal memory and the internal memory is cleared (S
160).

If no abnormality occurs in the internal memory, the counter is incremented by +1 and then the shift control unit 60 determines whether or not a failure code has occurred (S170). When no new failure code is generated, the shift control unit 60 determines the relationship between the counter value that is incremented by +1 and the set value corresponding to the number of times the start switch IS is actuated when the failure code is deleted. To do.

If a new separate fault code is generated, the shift control unit 60 initializes a counter value for measuring the number of times the start switch IS is actuated in order to erase the fault code (S190). , Return to the processing of step 110, and determine the operating state of the start switch IS.

When the relationship between the counter value and the set value is judged and the start switch IS is not operated more than the set number of times and the counter value is smaller than the set value, the process returns to the step 110, The operating state of the start switch IS is determined.

When the starting switch IS operates more than the set number of times and the counter value is more than the set value,
The shift control unit 60 erases the failure code stored in the internal memory and then ends the process (S200, S21).
0).

As shown in FIG. 1, the second aspect of the present invention
According to the embodiment, the configuration of the fault code erasing device for an automatic transmission vehicle includes a throttle valve sensing unit 10 for sensing the opening amount of a throttle valve, an engine speed sensing unit 20 for sensing the engine speed, and a turbine speed sensing unit. 30 and
The output speed sensing unit 40, the start switch IS, the mode selection switch CS, the switch unit 50 having the inhibitor switch IHS, and the various sensing units 10, 20, 3
0, 40, a shift control unit 60 connected to the output stage of the switch unit 50, and a display unit 70 connected to the output stage of the shift control unit 60.

A method of erasing a fault code according to a second embodiment of the present invention is shown in FIGS. 3 and 4 attached herewith, in which one stage is a state A, two stages are a state B and a state C, and a state D.
There are 3 steps to be in the state E and 4 steps to be in the state F and the state G, and the fault code is erased only when the above steps are sequentially performed.

Although the step of erasing the fault code can be easily performed, the reason for performing the step of erasing the fault code is that the desired fault code is erased only when a specific operation is performed so that a simple operation can be performed. This is to eliminate the possibility that the shift control unit 60 does not recognize the wrong code and does not erase the failure code and perform another operation.

The operation of the fault code erasing device for an automatic transmission vehicle according to the second embodiment of the present invention having the above construction will be described with reference to FIGS. When power is applied by the user, the shift control unit 60 counts the time for erasing the fault code and the first timer for measuring the step for erasing the fault code. The timer of No. 2 and the counter for measuring the step for erasing the fault code are set in the form of variables in the internal memory by software (S410).

Next, the time is measured by using the first and second timers, and the shift control unit 60 judges refusal of establishment of the setting condition for erasing the failure code (S420).
~ S490).

In the above case, the shift control unit 60 determines that an ignition fault indicating that a failure occurs in a portion that receives the engine speed has occurred (S430). When the ignition failure has not occurred, the shift control unit 60 determines whether or not there is a failure in the sensing unit that outputs an electrical signal depending on the state of the vehicle (S).
440).

When the ignition failure does not occur and the sensing section does not fail, the shift control section 60 controls the engine speed input to the engine speed sensing section 20 and the first setting. Determine the relationship with the value (S14
0). When the engine speed of the vehicle input to the engine speed sensing unit 20 is lower than the first set value and the engine stops, the shift control unit 60 determines that the opening amount of the throttle valve is in the maximum range. (S490).

However, if an ignition failure has occurred, the shift control unit 60 also determines whether or not there is a failure in the sensing section (S450), and if there is a failure in the sensing section, it is output to the engine. A turbine speed input to a torque converter (not shown) and output through the torque converter is sensed. The output speed sensing unit 40 senses an output speed that the turbine speed is input to the transmission and is output through the transmission, and then converts the output speed into an electrical signal to output to the shift control unit 60. To do.

When the detected turbine speed is higher than or equal to the second set value and the output speed is lower than the second set value, the shift control unit 60 determines that the engine is stopped. It is determined that the throttle valve opening TH is in the maximum range (S490).

That is, the shift control unit 60 determines the relationship between the turbine speed and the second set value when the ignition failure occurs and the sensing section does not fail (S).
480), when the turbine speed is lower than the second set value and the engine is stopped, it is determined that the opening amount of the throttle valve is in the maximum region (S490).

The shift control unit 60 determines that the throttle valve opening amount TH is equal to or larger than the set amount in the maximum region when the condition for stopping the engine is satisfied depending on the presence or absence of each of the failure codes. (S190), if it is determined that the throttle valve opening amount TH falls within the maximum range of the set amount or more, the shift control unit 60 determines that the driver is currently performing an operation to erase the failure code. Then, an operation for erasing the fault code stored in the internal memory is performed.

When a failure occurs in the automatic transmission, the shift control unit 60 causes the shift control unit 6 to display only when the driver or the mechanic selects the shift lever mode through the display unit 70.
Clear faults stored in 0's internal memory.

When the condition for erasing the fault code stored in the internal memory of the shift control unit 60 is satisfied, that is, when the condition for stopping the engine due to the portion where the fault code is generated is satisfied. When the opening amount TH of the throttle valve falls within the maximum range, the shift control unit 60 determines whether the set time has elapsed (S500). If the set time for deleting the failure code has not passed, It is determined whether the set timer is greater than or equal to 1 (S510). When the timer is less than 1 as the initial value, the shift control unit 60 determines the current shift lever and mode selection state.

Generally, the shift lever of an automatic transmission vehicle that shifts to four gears has P, R, N, D, 3, 2 and L gears. Economic mode (economy mode) that ensures low fuel consumption and low noise while ensuring sufficient reliability corresponding to the power performance of the output engine, and power mode (power mode) that enables more sporty driving There are two.

Therefore, it is possible to drive in a desired traveling mode by selecting the economy mode or the power mode by using the mode selection switch according to the driver's selection. When the mode selection switch CS is operated according to the embodiment of the present invention, the power mode (POWER) is selected when the economic mode (ECON) is not set, and the power mode (POWER) is selected.
When ER is not set, the economic mode (ECO
N) is selected.

When the driver operates the gear shift lever, the inhibitor switch IHS interlocked with the gear shift lever is set to the corresponding gear position, and the corresponding electric signal is output to the gear shift control unit 60.

The shift control unit 60 determines that the current position of the shift lever is the "1" th gear (S52).
0), and the shift control unit 60, if the current shift lever is in the "1" stage as shown in the state A shown in FIG. 3 (A), the current traveling mode is the economic mode (ECON). If it is determined that the traveling mode is the economic mode (ECON), the shift control unit 60 determines that the counter is set to 1 and one step for erasing the fault code is completed, After setting the timer to '1' (S
540 to S550), and whether the condition for erasing the fault code is satisfied is determined (S420 to S490).

If the conditions for erasing the fault code are not satisfied in steps S420 to S490,
The shift control unit 60 initializes the timer and the counter (S560 to S570), and then repeats the process from step S420.

When the condition for erasing the fault code by judging whether or not the above condition is satisfied is satisfied, the shift control unit 60
If the timer is greater than 1 in step S510,
It is determined whether or not the current gear shift lever is at D stage, that is, greater than or equal to 4 stage (S580).

If the gear shift lever is smaller than the D gear, the gear shift control unit 60 also determines whether the current gear shift lever is the third gear (S590). It is determined whether or not it is larger (S530). Since the value of the set counter is 1, the shift control unit 60 determines that the current shift lever has two gears (S).
610).

As shown in FIG. 3 (A), initially the gear shift lever is in the L stage as in state A, and when the mode is the economic mode (ECON), the counter and timer are set to 1. After the setting, the state of the shift lever is judged again, and if the shift lever is in the second gear by satisfying the state B of FIG. 3B, it is judged that the shift lever in the previous state is smaller than or equal to the second gear. (S650).

When the current state is the state B shown in FIG. 3 (B), the gear shift lever is in the entire state, that is, as shown in FIG. 60 determines that the mode selection switch CS can be operated (S6
60) When the mode selection switch CS is operated, it is determined that the current traveling mode is the power mode (POWER) (S670).

As shown in FIG. 3B, the power mode (P
If it is not the OWER) but the economic mode (ECON), the shift control unit 60 determines that the previous mode, that is, the mode A in FIG. 3A is the power mode (POWER) (S630), If the mode in the previous state is not the power mode (POWER), the timer is incremented by 1 (S700), and then the step S24 of judging whether or not the condition is satisfied is performed.
The processing is repeated by returning to 0.

After completing the two steps for erasing the fault code as described above, in step S590, the shift control unit 60 determines that the current shift lever has three gears as shown in FIG. 3D. It is determined that the gear shift lever in the previous state is smaller than or equal to three gears (S710), and the previous state is shown in FIG.
As shown in (C), when the number of stages is smaller than that of the second stage and the third stage, it is judged whether or not the mode selection switch CS can be operated (S72).
0), when the mode selection switch CS is operated, it is determined that the current mode is the economic mode (E) (S730).

When the current mode is not the economic mode (E) as shown in FIG. 3D, the shift control unit 60
Determines that the previous state mode is the economic mode (E) (S750). As shown in FIG. 3C, when the previous state mode is not the economic mode (E), the shift control unit 60 also increments the timer by 1 (S700), and then the condition for erasing the failure code is satisfied. The process is repeated by returning to the presence / absence determining stage.

In step S430, the current mode is changed to FIG.
In the economy mode (E) of the state E shown in (A), the shift control unit 60 determines that the counter is 1 (S740). Since the counter value is set to 2 in step S690, if the counter value is not 1, the shift control unit 60 determines that the three steps for erasing the fault code have been completed, and the counter value is set. After setting to 3 (S760), increment the timer again (S6).
90) Return to step S420 of determining whether the condition for erasing the fault code is satisfied, and repeat the operation.

If it is determined in step S580 that the current gearshift lever is larger than four gears as in the state F of FIG. If it is determined that the gearshift lever in the previous state is smaller than or equal to 5 gears (S770), and if the gearshift lever in the previous state is 3rd to 5th gears, that is, smaller than Nth gear as in state E of FIG. Determine whether the mode selection switch can be operated (S
780), if the mode selection switch can be operated, it is determined that the current mode is the power mode (POWER) (S790).

The current mode is the state F in FIG. 4 (B).
If the mode is the economic mode (ECON), the shift control unit 60 determines that the mode in the previous state is the power mode (POWER).
R) is determined (S800), and the previous state mode is the power mode (POWER) as in state E of FIG. 3 (A).
If not, after incrementing the timer again (S69
0), it is determined whether or not the condition for erasing the fault code is satisfied (S420).

When it is determined in step S790 that the gear shift lever is in the D stage and the current mode is the power mode (POWER) as in the state G of FIG. After determining that the counter value is 3 (S810) and the method for erasing the fault code is 3 and the method for erasing the fault code has been completed up to three steps, the shift control unit 60 determines that the current shift lever is 4 If the running mode is the power mode (POWER), it is determined that all the steps for erasing the fault code have been completed, the timer and the counter are initialized, and then the process is terminated (S830 to S840). ).

In step S500, if the timer value is equal to or longer than the set time, or if the condition for erasing the fault code is not satisfied, the shift control unit 60 initializes the timer and the counter and then executes the process. End (S560
~ S570).

When the mode selection switch CS is not actuated, or when the previous step cannot realize the driving mode desired by the user, the shift control unit 60 initializes the timer and the counter, and then returns the failure code. It is determined whether a condition for erasing is satisfied or not and the process is repeated.

In the embodiment of the present invention, the set time of the timer is set to about 10 seconds, and within this 10 seconds, as shown in FIG.
And, the operation of the shift lever and the selection of the mode should be performed as shown in FIG. When the above operation is performed, the failure code stored in the internal memory of the shift control unit 60 is erased.

Although the above embodiments have been described in relation to the shift control unit of the automatic transmission vehicle, the present invention is not limited to the shift control unit and can be applied to erasing the failure code of any device of various vehicles.

[0056]

As described above, according to the present invention, when an automatic transmission vehicle is exemplified, the failure code is automatically controlled when the start switch is operated more than the set number of times. The time required is reduced. Further, in the present invention, since the failure code indicating that a failure has occurred is controlled by using the shift lever and the mode selection switch, the failure code can be erased easily and quickly.

[Brief description of drawings]

FIG. 1 is a block diagram of a failure code erasing device for an automatic transmission vehicle according to first and second embodiments of the present invention.

FIG. 2 is a flow chart (flow chart) of the operation of a fault code erasing control method for an automatic transmission vehicle according to a first embodiment of the present invention.
Is.

FIGS. 3 (A) to 3 (D) are a first part showing a setting state of a gear shift lever and a mode selection switch of a fault code erasing device for an automatic transmission vehicle according to a second embodiment of the present invention. It is a figure.

FIGS. 4 (A) to 4 (C) are a second part showing a setting state of a shift lever and a mode selection switch of a fault code erasing device for an automatic transmission vehicle according to a second embodiment of the present invention. It is a figure.

FIG. 5 is a first partial view of a flowchart showing an operation sequence of a failure code erasing control method for an automatic transmission vehicle according to a second embodiment of the present invention.

FIG. 6 is a second partial view of the flowchart showing the operation sequence of the fault code deletion control method for the automatic transmission vehicle according to the second embodiment of the present invention.

FIG. 7 is a third partial view of the flowchart showing the operation sequence of the fault code erasing control method for the automatic transmission vehicle according to the second embodiment of the present invention.

[Explanation of symbols]

 10 Throttle valve sensing unit 20 Engine speed sensing unit 30 Turbine speed sensing unit 40 Output speed sensing unit 50 Switch unit IS ・ ・ Starting switch CS ・ ・ Mode selection switch IHS ・ ・ Inhibitor switch 60 Shift control unit 70 Display unit

Claims (4)

[Claims] 1. A vehicle start switch that outputs an electric signal in response to a vehicle start, a memory that stores a vehicle failure code, and a counter that counts the number of times the start switch is activated. When the start switch is actuated, a predetermined value is increased in the counter for measuring the number of actuations of the start switch in order to erase the failure code stored in the memory, and the failure code stored in the memory is increased. When a new failure code is stored by judging whether or not it has occurred, the counter value is initialized, and when the new failure code is not stored, the counter value and the failure code are erased. For determining whether or not the number of actuations of the start switch has reached a corresponding set value, and when the counter value is equal to or larger than the set value, the value stored in the memory is stored. A failure code erasing device for a vehicle having a control unit for erasing the failure code. 2. A step of setting a counter for measuring the number of times the starting switch of the vehicle is actuated in order to erase the failure code stored in the memory in response to the number of times of starting the vehicle, to a predetermined value. When the start switch is actuated by determining the operating state of the above, the counter is incremented by +1 to determine whether or not a failure code is stored in the memory, and a new failure code is stored in the memory. In order to erase the counter value and the fault code after initializing the counter if stored, and also to judge the operating state of the start switch and to store a new fault code if not stored. Determining the magnitude relationship with a set value corresponding to the number of times the start switch has been actuated, and erasing the failure code if the counter value is equal to or greater than the set value. Fault code erasing method of a vehicle having the steps. 3. An engine speed sensor for detecting the engine speed of a vehicle and outputting an electrical signal corresponding to the engine speed, and an engine speed sensing unit for sensing the engine speed of a vehicle to detect an electrical signal corresponding to the engine speed. It outputs the turbine speed sensor, the output speed sensor that senses the speed output to the vehicle transmission, and outputs an electrical signal corresponding to the speed, and the opening degree of the slot valve of the vehicle. A switch that has a slot valve sensor that outputs an electrical signal corresponding to it, a vehicle start switch, a mode selection switch, and an inhibitor switch, and that outputs an electrical signal according to these selection states. And (a) a memory for storing a vehicle fault code, a timer, and a counter, and (b) erases the fault code stored in the memory when power is applied. After setting a predetermined time in the timer for setting and a predetermined value in the counter, (c) when the failure code stored in the memory indicates a failure of the engine speed sensing portion, The turbine speed is input to determine whether or not the engine is stopped. (D) The turbine speed is detected when a failure occurs in the engine speed sensing section and the various sensing sections fail. The engine speed is detected by sensing the engine speed and the output speed to determine whether the engine is stopped. (E) If there is no failure in the engine speed sensing part, the engine speed is sensed to stop the engine. If the throttle valve opening amount is equal to or greater than the set amount for erasing the fault code when the engine is stopped, the current shift lever state and the running mode state are determined. In the initial state, if the speed change lever is one step and the traveling mode is the economy mode, the counter is set to 1, and if the next speed change lever is two steps and the economy mode, the If it is determined that the vehicle is traveling and the speed change lever is in the 2nd speed and is in the power mode, the counter is set to 2, and if the next speed change lever is in the 3rd speed and the traveling mode is in the power mode, the speed change lever is set again. Judgment of the driving mode, the speed change lever has 3 speeds, the counter is set to 3 when the economy mode is set, and the next speed change lever has 4 speeds. A fault code erasing device for a vehicle, which has a control unit for erasing a fault code after initializing a counter when the speed change lever is in four stages by judging the traveling mode and the power mode is set. 4. A step of initializing all variables when power is applied and setting a counter and a timer to predetermined values, an operating state of a vehicle start switch for erasing a fault code, and an engine stop. , The stage of judging whether or not the condition of the vehicle stop, the throttle valve opening amount for the maximum value equal to or more than the set amount is satisfied, and the current gear shift lever is one gear and the traveling mode is the economic mode. Then, when the shift lever is in the 1st stage and is in the economic mode, the timer is incremented by 1 and the counter is set to 1 to erase the fault code. After the completion of the 1st stage, the shift lever is set to the 2 stage. In the economic mode, when the speed change lever has two gears, and the traveling mode is the power mode, the timer is incremented by 1, the counter is set to 2, and the second stage of erasing the fault code is completed. And, after the completion of the second step, when the speed change lever is in the third speed, the drive mode is in the power mode and the speed change lever is in the third speed, and the drive mode is the economic mode, increase the timer by one. After completing the third step of setting the counter to 3 and erasing the fault code, after the completion of the third step, the speed change lever is in four steps, the traveling mode is in the economic mode, and the speed change lever is in four steps. Yes, in a vehicle fault code erasing method having a step of erasing and ending a fault code after initializing a timer and a counter when the traveling mode is a power mode, a method for erasing the fault code is provided. The step of judging whether the conditions are met, and the step of judging that the engine is stopped because the turbine speed is lower than the set value if the engine speed sensing part is out of order. If the engine speed sensing part fails and other sensing parts fail, the turbine speed and output speed are sensed to determine that the engine will stop, and the engine speed sensing part If there is no failure, the engine speed is sensed and it is determined that the engine will stop, and the throttle valve opening amount when the engine is stopped is the set amount for erasing the failure code. A method of erasing a fault code for a vehicle, comprising: determining a relationship.