KR20000059088A - Method and apparatus for automobile diagnosis and maintenance using wireless(mobile) data communication and network - Google Patents

Abstract

PURPOSE: A method for supplying vehicle diagnosing services is provided to diagnose vehicles through questions and answers with vehicle owners, by receiving information recorded in electronic control units(ECUs) of the vehicles through ECU communication interfaces, and by transmitting the information to a server through mobile phones. CONSTITUTION: A method for supplying vehicle diagnosing services using mobile phones comprises the steps of: making a user connect to a service web site through a network connector or a mobile phone, or a computer connected to the internet, after purchasing an electronic control unit(ECU) communication interface, and receive a usage authentication to receive a downloaded program of the ECU communication interface; connecting the ECU communication interface with a server(40) of a service system through the mobile phone, to receive a remote diagnosing service; receiving a maintenance service; and receiving an ECU reprogramming service for a recalled vehicle.

Description

Method and apparatus for automobile diagnosis and maintenance using wireless (mobile) data communication and network}

According to the present invention, the information contained in the ECU in a vehicle is transmitted using an ECU communication interface device which does not have some or all of its own diagnostic software and is transferred back to a server existing on the network (eg, a mobile phone). It is not only properly diagnosed through sufficient analysis data in the server and interactive questions / answers with the user, but also introduced to the appropriate maintenance company to solve the problem of the vehicle, or to direct the maintenance company to the location of the broken vehicle. The present invention relates to a vehicle diagnostic and maintenance service method and a device using a mobile communication device and a network.

In addition, the present invention, when the need to change the ECU program of the vehicle already sold in the vehicle manufacturer occurs, but using the system as it is, the method of changing the vehicle ECU program of the user only by reverse the flow direction of the information And to the apparatus.

Existing ECU scan tools store information about each type of vehicle in the ECU scan tool itself (mainly using a different memory card for each type of vehicle), and inform the display device in the ECU scan tool. come. However, this method had to store all vehicle-specific information in a size-limited device such as an ECU scan tool. Therefore, the diagnostic software content in the ECU scan tool was difficult to perform a comprehensive analysis.

In addition, services related to code analysis in ECUs using these ECU scan tools can only be performed by some maintenance companies with expensive ECU scan tools, which cannot be easily used by ordinary automobile users. In other words, since the service can be received only by going to the above-mentioned maintenance company, the users suffered economic and time loss due to the visit.

Also, if you are driving a car, the ECU in the car will inform you of the fault condition through the dash board, but the user will know what kind of fault it is (more specifically, if you need to stop driving immediately and go to a repair shop, etc.). There is a problem that you can drive with anxiety because you can not easily determine whether it is a malfunction that you can go to the shop slowly afterwards. Due to this, there is a problem that even if the car failure can be sufficiently prevented and warned in advance through the dashboard, the user does not know exactly what kind of failure (by driving the vehicle continuously) to cause an accident.

In addition, when a vehicle manufacturer needs to modify the program or data in the ECU for a vehicle that has already been sold, the vehicle owner should visit the workshop directly from the point of view of the car user by having the vehicle owner visit the service company as described above. There was a problem that the economic / time loss occurred, and also the automobile manufacturer's point of view, by putting a lot of maintenance-related personnel in such a task, the economic loss occurs.

An object of the present invention is to solve the above-mentioned problems, the mobile communication means to receive the information recorded in the ECU in the vehicle by using the ECU communication interface device and to send it back to the server on the network (E.g., mobile phone), it can be properly diagnosed through sufficient analysis data in the server, interactive questions / answers with the user, etc. The present invention provides a method and apparatus for car diagnosis and maintenance service using a mobile communication device and a network, which are capable of accessing a location of a failed vehicle.

Another object of the present invention is to use the system as it is, if the necessity to change the ECU program of the vehicle already sold in the vehicle manufacturing company, it is possible to change the vehicle ECU program of the user by only reverse the direction of the flow of information. The present invention provides a method and apparatus for diagnosing and maintaining a vehicle using a mobile communication device and a network.

According to a preferred embodiment of the present invention for achieving the above object, the ECU communication interface device for storing various information of the ECU of the vehicle is connected, and the connection with the ECU communication interface device while being connected to the network A server with a mobile communication device, a server that is also connected to the network and which can use the error codes stored in the vehicle ECU as an input to analyze the state of the vehicle, the user ID, the user mobile communication. Member and vehicle history management database with data such as device information, user model, mileage to date, driving style, commute to work, commute, weekend use, breakdown history, accident history and maintenance history Name, model, year of production, various information of the transmitted ECU, diagnosis (analysis) information, possible error code, ECU program change need vehicle data consisting of the ECU diagnostic history database with error code, number of occurrences, estimated cause, etc., and model, production year, ECU type, change need, change, program size to be changed, change program, etc. ECU diagnosis database including the base, model, year of production, ECU type, ECU information, analysis, additional questions, additional question items, and the cause of the failure according to the additional question, and the name, address and telephone of the workshop. A database of the repair shop consisting of maintenance level, major features, related manufacturing companies, specialty zones, coupons, and the construction of its own homepage, and a communication protocol database for each vehicle type including the vehicle type, production year, ECU type, and protocol type, Maintenance that is notified of the history of the vehicle that needs to be maintained from the server, that is, the vehicle that has expressed the intention of the user It consists of a company characterized by receiving a variety of information of the ECU from the vehicle of the user receives, analyzes, diagnoses and stores the results and provides the repair company and maintenance-related information for repair and ECU at the request of the car manufacturer When the program needs to be changed, there is provided a method and apparatus for car diagnosis and maintenance service using a mobile communication device and a network, wherein the ECU program can be changed by transmitting a corresponding program.

According to the method for diagnosing and maintaining a vehicle using a mobile communication device and a network according to the present invention, an ECU communication interface device storing a communication program for exchanging various information with an ECU of a vehicle is connected to a mobile communication device capable of communication. And determining whether there is an ECU information upload request signal from a user who accesses a website through the mobile communication device, and if the request signal is found, the ECU information uploaded from the user and the ECU diagnosis stored in the database (analysis) Performs a diagnostic process of comparing and displaying a database, and guides maintenance companies and maintenance-related information for repairs.

1 is a schematic diagram of a whole system for diagnosing a vehicle and changing a program using a mobile communication device and a network according to the present invention.

FIG. 2 is a block diagram schematically showing the structure of the ECU communication interface device of FIG.

Figure 3 is a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention and the entire vehicle remote diagnostic service flow diagram in the device

4 is a flowchart illustrating a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention, and a process of purchasing and using an ECU communication interface device and downloading an ECU communication interface device program in the device.

5 is a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention, and a remote diagnostic service flowchart using an ECU communication interface device and a mobile communication device in the device.

6 is a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention, and a maintenance service flowchart in the apparatus thereof.

7 is a flowchart illustrating an ECU reprogramming service process for a vehicle diagnostic and maintenance service method using a mobile communication device and a network and a recall vehicle in the apparatus according to the present invention.

FIG. 8 is a flowchart illustrating a method for diagnosing and maintaining a vehicle using a mobile communication device and a network, and a cache in the apparatus.

<Explanation of symbols for main parts of drawing>

2: automobile 3: ECU

10: communication interface device 20: mobile communication device

22: wireless data communication network 30: wireless data communication server

32: network 40: server

50: database

51: Member and Vehicle History Database

52: ECU diagnostic history database

53: Program change requires vehicle model database

54: ECU information diagnostic (analysis) database

55: Workshop Database

56: vehicle communication protocol database

60: mechanic

1 is a schematic diagram of a complete system used by a user to exchange information with an ECU using an ECU communication interface device, and then to use and exchange information with analysis and change information in a server on a network. Physically, the user is attached to the vehicle 2 and the ECU communication interface device 10 which can exchange information with the ECU 3 inside the vehicle is connected to the network (for example, the Internet) 32 and the ECU communication described above. The mobile communication device 20 which can also be connected to the interface device 10 and, for example, various kinds of information stored in the vehicle ECU 3 while being connected to the radiotelephone, the wireless communication device, and the network 32 are also provided. It is composed of a server 40 having software that can be utilized as an input to analyze the state of the car.

In the above description, the network 32 refers to various commercial networks including the Internet, a wireless data communication network, and the like.

Reference numeral 50 denotes a database, which manages the vehicle history of each user. The field configuration includes user ID, user mobile device information, user model, mileage to date, driving style, usual commute, commute distance, A member and vehicle history management database 51 having data on weekend use, failure history, accident history, maintenance history, etc., and a database for managing the error code occurrence status of vehicles for each company. ECU diagnostic history database 52 with name, model, year of production, various information of ECU transmitted and diagnosis (analysis) information, possible error code, generated error code, frequency of occurrence, estimated cause, etc., and electronic control Regarding the type of vehicle that needs to change the unit program, the field configuration is the type of vehicle, year of production, type of ECU, change need, change contents, program to be changed. ECU Program Change Needed Database (53) consisting of size, change program, etc. and for error code diagnosis of each vehicle type, the field configuration is the type of vehicle, year of production, type of ECU, ECU information, analysis, additional questions, and additional questions. ECU diagnostic database (54), including question items, causes of failures in accordance with additional questions, and field configuration includes workshop name, address, telephone, maintenance grade, key features, manufacturers, propaganda, coupons. It includes a body shop database 55 composed of whether or not to build its own homepage, and a communication protocol database 56 for each vehicle model having a field configuration, a vehicle year, a production year, an ECU type, a protocol type, and the like.

Reference numeral 60 is a maintenance company or a repair shop, and the server 40 is notified of the history of a vehicle that needs to be maintained, that is, a vehicle that has expressed the intention of the user for maintenance.

FIG. 2 is a block diagram schematically showing the structure of the ECU communication interface device 10 in FIG. 1, which is different from the ECU scan tool used in a general workshop, and is greatly differentiated for the following reasons.

1) The error code received from the ECU 3 in the vehicle 2, the vehicle sensor value, the internal variable used by the ECU while controlling various devices, and the like, while being connected to the separate mobile communication device 20, are recalled. An ECU communication module 11 and a mobile communication device connection module 13 are provided as communication means to be transmitted to the mobile communication device 20. The overall device is controlled via the processing module 12. The ECU communication module varies depending on the type of vehicle, but here the connector (not shown) is switched to the general communication port A according to the type of vehicle. At this time, power for operating the ECU communication interface device 10 is supplied through this port A. In addition, the processing module 12 processes the communication with the ECU 3 to obtain various kinds of information of the ECU, store it and transmit it to a computer later, or the ECU change program received from the server 40, etc. 2) It is in charge of the work to send. The mobile communication device connection module 13 connects to the mobile communication device 20 through port B, for example, and transmits the data processed by the processing module 12 to the mobile communication device 20. Reference numeral 17 denotes a display module, which displays a processing result and a processing status. Reference numeral 15 is a memory module, which consists of a nonvolatile storage device such as a flash ROM, which may store software used for communication with a specific vehicle from the beginning, and may be stored in a computer from a server 40 on a network. Alternatively, the communication related program may be downloaded and stored through a mobile communication device or its own network connection device. Also, when various information is transmitted from the ECU 3, it stores and stores it until it is transmitted to the server 40 later. Also perform. Reference numeral 16 denotes an operation input module to receive an operation signal from the user.

2) Like a general ECU scan tool, it has a display module 17 which shows the results of various ECU information (or diagnosis results thereof), but this device may not be installed as an option. In this case, a separate device (monitor, etc.) You can also display via).

3) A network connection device may be built in such a way that the network can be connected to the server without going through the mobile communication device mentioned in 1).

In one embodiment of the present invention, the ECU communication interface device does not have any fault diagnosis-related code therein but has a display device, and can be used as a modem of a general desktop computer when connected to a mobile phone. It is assumed that the communication module is installed in the ECU communication interface device.

As another embodiment of the present invention, the electronic control unit communication interface device can directly control the Internet access module for wireless mobile communication within the mobile phone, provided that the mobile phone can utilize an Internet access protocol for wireless communication (eg, WAP). If possible, the electronic control unit communication interface device can control this to directly establish an Internet connection to a server on the network.

The ECU communication interface device 10 is connected to the vehicle 2 to receive vehicle ECU information, and is connected to the mobile communication device 20 so that the ECU communication interface device 10 receives an error code transmitted from the vehicle 2. The information is transmitted to the server 40 on the network 32 and the diagnostic result is transmitted in real time. Here, the ECU communication interface device 10 includes a protocol related program for communicating with the ECU in a specific vehicle. It is stored in advance or downloaded from the network server 40 which will be introduced later.

In connection with the above operation, the ECU communication interface device moves all the ECU internal information to the memory module in the ECU communication interface device as long as the software inside the ECU allows, that is, the software inside the ECU is programmed to transmit to a specific external device. We can save.

The above data and processing flow are mainly in the form of transmission from ECU in the vehicle to the ECU communication interface device (of course, the electrical signals sent by the ECU communication interface device to the ECU to request data are ignored) or vice versa. Flow charts are possible.

In other words, the ECU communication interface apparatus described above can be used to replace all or part of the program / control data code in the ECU as long as the ECU permits it. Here, the ECU communication interface device pre-downloads the upgraded software of the relevant ECU from the server through the Internet connection (either through a computer, a mobile communication device or through its own network connection device), and stores it in an internal memory module. Shall be.

Hereinafter, the operation in the apparatus according to the present invention will be described in detail with reference to the accompanying drawings. The operation receives the ECU information from the vehicle largely and transmits it to the server on the network through the mobile communication device to diagnose the vehicle status. On the contrary, the information related to the ECU program change is received from the server through the mobile communication device. It is distinguished by the operation of changing the ECU program.

3 is a flowchart illustrating a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention, and an overall vehicle remote diagnosis service in the device, as shown in FIG. Access to the service website through a computer or mobile communication device or its own network connection device connected to the authentication to use and download the ECU communication interface device program (S2). Thereafter, by connecting the ECU communication interface device and the server 40 of the service system through the mobile communication device to receive a remote diagnostic service (S4). After that, the maintenance service (S6) or the ECU reprogramming service for the recall vehicle (S8).

4 is a flowchart illustrating a vehicle diagnostic and maintenance service method using a mobile communication device and a network according to the present invention, and a process of purchasing and using an ECU communication interface device and downloading a ECU communication interface device program in the device. Likewise, the user purchases the ECU communication interface device (S10), connects the ECU communication interface device to the mobile communication device and accesses the remote diagnosis service homepage (S12). After registering and logging in, enter the information required by the service (S14). After that, the service system checks the membership, the ID and the login password, and confirms the information input for the service (S16). If the information input is not confirmed at S16, the process proceeds to the step S14. If the input of the information is confirmed, a database is generated by storing the member information and information necessary for the service (S18). Thereafter, the user requests the ECU communication interface device program download (S20), and the service system transmits and checks the corresponding program, provides a user guide, and updates the database (S22). After that, the user checks the user guide and completes the ECU communication interface device and service preparation (S24).

FIG. 5 is a flowchart of a vehicle diagnosis and maintenance service using a mobile communication device and a network, and a remote diagnosis service flowchart using an ECU communication interface device and a mobile communication device in the device. The telephone and the wireless communication device and the ECU communication interface device and the ECU of the vehicle are connected to each other and prepared for communication (S30). After this, the ECU communication interface device is operated to perform ECU scanning and to start data transmission through a mobile phone or a wireless communication device. At this time, the information of the ECU is stored in the memory of the ECU communication interface device and transmitted to the remote diagnosis service system through a mobile phone or a wireless communication device (S32). Thereafter, the service system checks member information, receives and stores ECU information, and updates the database (S34). After that, the ECU transmits the ECU data reception completion signal to the interface device (S36). Thereafter, the user operates the ECU communication interface device to terminate the communication connection of the mobile phone / wireless communication device and separates the ECU from the ECU communication interface device and the mobile phone / wireless communication device (S38). Thereafter, the service system analyzes ECU data (S40). After that, it is determined whether maintenance is required or whether the vehicle is required for ECU reprogramming (S42). If necessary, the diagnosis database and the database are stored to update the database (S46) if necessary. After analyzing the information, the price information analysis and the ECU program recall related information (S44), the process proceeds to step S46. After that, the service system sends a diagnosis result and various information. When using a mobile phone that is not connected to the Internet, a text message is sent to the user's mobile phone (S48). Thereafter, the user checks the diagnosis result and the information received through the mobile phone / wireless communication device (S50). Thereafter, the user judges whether or not the user wants to check detailed information (S52). If not, the user proceeds to S66. If the user wants to check the information, the user accesses the remote diagnosis service homepage through a computer or a mobile communication device (S54). After logging in to the remote diagnosis service (S56), and then confirms the ID and login password (S58). If the password is not confirmed, the process proceeds to step S56, and if the password is confirmed, if the detailed information search menu is selected (S60), the service system provides detailed information (S62), and the user checks the detailed information. Log out of the remote diagnosis service homepage (S64). After that, the user decides whether to receive maintenance or ECU reprogramming (S66), and if necessary, terminates and receives the maintenance service or ECU reprogramming service for the vehicle to be recalled (S68).

6 is a flowchart of a vehicle diagnostic and maintenance service using a mobile communication device and a network according to the present invention, and a maintenance service flowchart in the apparatus. As shown in FIG. 6, a user makes a maintenance request. Travel request or towing request, and can present customer information (S70). After that, the workshop interviews the customer, checks the information, consults, explains the required maintenance details and maintenance method, and presents the estimated maintenance cost (S72). After that, the user checks the maintenance history / method / expected cost and requests maintenance (S74). After that, the maintenance station performs maintenance, and after completion of the maintenance, the description of the maintenance details and results, and the maintenance cost claim (S76). Then, the user proceeds to the maintenance status / maintenance history / cost confirmation process (S80), if there is no objection to the above confirmation (S80), the maintenance status / maintenance history / cost approval and maintenance payment (S82). If there is any objection to the confirmation contents (S80), an unsatisfactory matter correction request is made (S78), and the step S76 is performed again.

After the above step S82, the workshop informs the remote diagnosis service system (or company) of the customer information and the maintenance related information. The notification method is through the remote diagnosis service homepage, or by fax or telephone (S84). After that, the service system obtains information, examines customer satisfaction, and stores the information to update the database (S86).

FIG. 7 is a flowchart illustrating an ECU reprogramming service process for a vehicle diagnostic and maintenance service method using a mobile communication device and a network, and a recall vehicle in the apparatus, according to the present invention. Connect the device to the mobile communication device and access the remote diagnostic service homepage (S90). After that, the user logs in to the remote diagnosis service (S92), and the service system confirms the user's ID and login password (S94). If it is not confirmed in step S94, the process proceeds to step S92. If it is confirmed, the ECU reprogramming service for the recall vehicle is selected, and information requested by the service is input (S96). . After that, the service system analyzes the inputted information, provides a detailed guide on the reprogramming service purpose, contents, methods, etc., presents a sequential service usage method, and transmits the corresponding ECU program (S98). Subsequently, the ECU program is downloaded and stored in the ECU communication interface device by operating the mobile communication device and the ECU communication interface device according to the sequential usage guide (S100). After that, the service system sends a download completion message and provides all necessary information such as a ECU reprogramming method manual and workshop information (S102). After the user logs out of the remote diagnosis service and disconnects the ECU communication interface device, the ECU program download is completed (S104). After that, the user prepares the communication by connecting the ECU communication interface device with the vehicle ECU (S106). Thereafter, ECU reprogramming is started by operating the ECU communication interface device. Specifically, the ECU program stored in the ECU communication interface device is transmitted and stored in the ECU to update the ECU program (S108). Thereafter, after confirming the completion of communication, the user separates the ECU communication interface device to complete the ECU reprogramming (S110). Then log in to the service homepage and enter the action details and results (S112). The service system stores relevant information and updates the database (S114).

FIG. 8 is a method of diagnosing and maintaining a vehicle using a mobile communication device and a network according to the present invention, and a flowchart of a cache in the apparatus. As shown in FIG. Service system) provides the cost of purchasing ECU communication interface device and provides various information necessary for service and database construction. ①, ECU communication interface device sales and remote diagnosis service, various information and maintenance service related information, ECU reprogramming service and ② relationship between maintenance discount and ECU reprogramming compensation fee. In addition, service systems and automakers are involved in providing ECU reprogramming service fees and databases, purchasing costs, providing ECU programs (for reprogramming), and ⑤, representing ECU reprogramming services and selling databases. In addition, service system and maintenance service provider provide information related to maintenance service, and contribute to customer increase. In addition, the relationship between the customer and the maintenance company is that the customer provides the maintenance fee ⑨ for the maintenance service, and the maintenance operator receives the maintenance fee ⑨ and provides the maintenance service⑩.

In addition, the service system and the mobile communication service provider contribute to the increase of the remote diagnosis service storage fee and mobile communication call ④ through the mobile phone, and the remote diagnosis service fee and content provision fee through the mobile phone ③ and the mobile communication network ③. In addition, customers and mobile service providers pay mobile telecommunication charges (including wireless internet usage fees and remote diagnosis service charges through mobile phones / wireless communication devices) and provide mobile communication services.

Next, an operation of providing a user's other vehicle history information through a general web connection or a wireless Internet connection will be described.

In addition to the contents transmitted from the ECU communication interface device such as the above error code, the user can access the web for general information on his / her history, mileage, average use time and distance related to his / her vehicle, and noise generated by a recently experienced vehicle. By providing the server through a wireless internet connection or through a wireless Internet connection, you can receive comprehensive advice on the current state of the vehicle, and the operating side of the server 40 is based on the current state of each vehicle, major problem areas, and various The current error code statistics, risk analysis statistics, etc. of the vehicle for the vehicle can be made and sold in the form of statistical data to manufacturers, maintenance companies, and insurance companies.

As described above, according to the method and apparatus for diagnosis and maintenance service of a vehicle using a mobile communication device and a network according to the present invention, even in case of an unexpected failure, the user can inspect his own ECU to prevent time loss to the repair shop. It has an effect. In addition, there is an effect that can be easily diagnosed in the moving vehicle. If the ECU program / data change is necessary even for a vehicle already on the market, it can be changed easily by online operation. Therefore, the cost of bringing the vehicle to be changed to the maintenance site and the vehicle to be recalled This can save costs for mails requesting visits to maintenance sites and costs for maintenance personnel responsible for data changes.

In addition, since each car user manages his / her vehicle history online for his car, there is no risk of losing information about the vehicle history by personal error, and if there are many users, statistical information about the actual state of vehicles in operation Information can be easily obtained, making it a good resource for designing new vehicles or new ECUs.

In addition, preferred embodiments of the present invention are posted for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and changes belong to the scope of the claims Should be seen.

Claims (5)

An ECU communication interface device capable of exchanging various information with the ECU of the vehicle, a mobile communication device connected to the ECU communication interface device while being connected to a network, A server having software that is also connected to the network and which can analyze the state of the vehicle by utilizing various information stored in the vehicle ECU as an input, Member and vehicle history management with data such as user ID, user's mobile device information, user model, mileage to date, driving style, commuting route, commuting distance, weekend use, breakdown history, accident history, maintenance history, etc. A database of the ECU diagnostic history, which includes a database, a manufacturer's name, a model, a production year, various information of the transmitted ECU and diagnosis (analysis) information, a possible error code, a generated error code, a frequency of occurrence, and an estimated cause; ECU program consisting of the model, year of production, type of ECU, change need, change, program size to be changed, change program, etc. Vehicle model database, type, year of production, type of ECU, ECU information, analysis, additional questions ECU diagnostic database including presence, additional question item, cause of failure according to additional question, workshop name, address, telephone, maintenance class, major A repair shop database consisting of special points, related manufacturing companies, specialty zones, coupons, building of its own homepage, and a communication protocol database for each car model, including a vehicle type, production year, ECU type, and protocol type, It consists of a maintenance company that is notified of the history of the vehicle that needs to be serviced from the server, that is, the vehicle that the user expressed intention to maintain, characterized in that it receives the various information of the ECU from the user's car to diagnose and notify the result Automobile diagnostic and maintenance service device using a mobile communication device and network, characterized in that to guide the maintenance company and various maintenance-related information for repair. 2. The apparatus of claim 1, wherein the network in the device is one of various commercial networks including the Internet, a wireless data communication network, and the like. The ECU communication interface device for exchanging various information with the ECU of the vehicle is connected to the mobile communication device capable of communication, Determining whether there is an ECU information upload request signal from a user who accesses a website through the mobile communication device; If there is a request signal as a result of the determination, a diagnostic process for comparing and displaying the ECU information uploaded from the user and the ECU information diagnosis (analysis) database stored in the database is performed. A method for diagnosing and repairing a vehicle using a mobile communication device and a network, wherein the repair company and maintenance related information are provided for repair. The method of claim 3, further comprising interactively performing a question with a user that is necessary for a more accurate diagnosis when performing ECU information analysis in the diagnosis process. Maintenance service method. The ECU communication interface device for exchanging various information with the ECU of the vehicle is connected to the mobile communication device capable of communication, The user accesses the web server via the mobile communication device and determines if the user upgrades the program of the ECU when the user model is the vehicle to be upgraded by the ECU. As a result of the determination, if an upgrade is performed, a necessary program will be downloaded to the user's communication interface device. A method for diagnosing and maintaining a vehicle using a mobile communication device and a network, comprising transmitting the correct size of a program to be transmitted and indicating that the transmission is completed.