CN101434221B - Vehicle failure diagnosis apparatus - Google Patents

Abstract

The present invention relates to a failure diagnosis apparatus of a vehicle, the apparatus including: a connector section inputting sensor data and fault code data of the vehicle from an OBD-II connector of the vehicle through a data cable; a microprocessor including a control unit and a memory unit, for calculating and processing data inputted through the connector unit; a display unit and a sound output unit for outputting data calculated and processed by the microprocessor in a screen and sound manner; a 1 st serial port connected to the wireless communication module for transmitting data output from the microprocessor and receiving external data; a 2 nd serial port connected to an external device for transmitting data output from the microprocessor and receiving external data; and an external memory slot for storing data output from the microprocessor to the external memory. According to the above configuration, it is possible to detect an abnormality of the vehicle at an initial stage, prevent the vehicle from being expanded to a failure of another component, reduce maintenance costs, and prevent in advance a risk factor given to the vehicle or a driver.

Description

Vehicle fault diagnosis equipment

Technical field

The present invention relates to a kind of failure diagnosis apparatus (Fault Diagnosis Apparatus forVehicle) of vehicle; Relate in particular to OBD-II (On-Board Diagnosis-II from vehicle; Second generation onboard diagnostic system) adaptor union obtains the sensing data and the failure code data of vehicle, exports the failure diagnosis apparatus of vehicle of current state or the trouble location of vehicle in real time with picture and sound.

Background technology

At present, from the angle changing of automotive environment, maximum variation is the automobile componentization of the swift electronization that can enumerate out vehicle, media product and follows in the providing etc. of raising and plurality of kinds of contents of this vehicle performance.Representative example is the multimedia device of small-size computer that engine and driving device (Transmission), ABS (anti-locking braking system), Air Bag (air bag) etc. are controlled and MP3 player etc.Along with the development of these devices, considerably improved the performance and the safety of vehicle, and improved the comfort feature in driving.

Yet; Therefore and the secondary action that produces as; Produced safety problem by the unusual of various electronic control packages, the problems such as cost burden that produced the safe operation problem by the operational complexity of the multimedia device that takes place under steam and produced the customer by buying device.

At present, though there is the method to know the operation irregularity of most of ordinary electronic device of adhering in the vehicle, exist the average driver in going to inform the device that these are unusual in real time hardly.In addition, most of vehicle uses multimedia equipment to appear with omniselector to be the unified gradually trend in center, but in reality, compares with present vehicle popularity rate, and the employing rate is relatively very low.This is because multimedia devices such as omniselector not only price are very high, and application places is restricted in vehicle interior.

Generally, vehicle fault diagnosis equipment is meant and electronic control package (ECU; Be called ECU below) connect, have or not the device of fault, wherein above-mentioned ECU to comprise that automatic transmission with hydraulic torque converter controls all parts of vehicles such as drive system, brake system, steering swivel system in being controlled at the diagnosis vehicle.

In recent years, utilize advanced Eltec, in vehicle, be provided with various sensors attached to the ECU that comes to confirm easily fault section in the vehicle.Thereby, when carrying out the tracing for troubles of vehicle, above-mentioned ECU is linked to each other with fault diagnosing apparatus for vehicle, check the fault section of vehicle.

These existing fault diagnosing apparatus for vehicle can't know be with vehicle to find before maintenance factory understands failure code in order to know vehicle to have no abnormal, can not take the problem points tackled rapidly so exist.In addition, also exist and to take measure rapidly unusually to the various of generation in service, so be difficult to prevent the problem points of safety misadventure in advance.

Summary of the invention

The present invention proposes in order to solve aforesaid problem points; It is no abnormal that its purpose is to inform in real time not only that vehicle in service vehicle has; And processing and output can know the useful sensor information of current state of vehicle, so that let average driver understand easily.

In addition, its purpose is and the radio communication mold bonded, obtains the special method of dealing with to vehicle abnormality in real time, and obtains required road information of operation and multiple information on services etc. in real time.

Vehicle fault diagnosis equipment of the present invention is each sensing data that obtains vehicle; And the equipment of exporting with the discernible mode of driver; It is characterized in that; This vehicle fault diagnosis equipment comprises: connector portion, and it imports the sensing data and the failure code data of vehicle through data cable from the OBD-II adaptor union of vehicle; The microprocessor that comprises control part and memory section, its computing is also handled the data through above-mentioned connector portion input; Telltale portion and audio output unit, its mode with picture and sound are exported by above-mentioned microprocessor computing and the data after handling; The 1st serial port (Serial Port), it is connected with wireless communication module in order to transmit from the data of above-mentioned microprocessor output and to receive exterior data; The 2nd serial port, it is connected with external device in order to transmit from the data of above-mentioned microprocessor output and to receive exterior data; And external memory slot, it is used for the data storage of exporting from above-mentioned microprocessor to external memory storage.

Above-mentioned vehicle fault diagnosis equipment carries out the transmission of data through CAN or K-Line between the OBD-II of vehicle adaptor union and connector portion.

The memory section of above-mentioned microprocessor is made up of with the nonvolatile memory that stores the failure code data bank the volatile memory of temporary transient storage data.

Above-mentioned vehicle fault diagnosis equipment also comprises: the GPS module that is used to receive these moment data, position data.

Above-mentioned vehicle fault diagnosis equipment also is formed with the keypad portion that is used for the control vehicle failure diagnosis apparatus.

Above-mentioned wireless communication module is CDMA module, gsm module or wireless LAN module.

Said external equipment is PDA or omniselector (Navigation).

If above-mentioned vehicle fault diagnosis equipment does not have the input of the trouble diagnosing button of keypad portion after the startup of vehicle; Then by the microprocessor computing and handle the sensing data of the vehicle that is obtained from the OBD-II adaptor union, and export through telltale portion and audio output unit.

The sensor data are the voltage of tire air pressure, change-speed box oil temperature, engine cooling water temperature and battery.

If above-mentioned vehicle fault diagnosis equipment after the startup of vehicle from the failure code data of OBD-II adaptor union input vehicle; Then with above-mentioned nonvolatile memory in the failure code data of database of storing union relatively, and through telltale portion with audio output unit output failure code parsing content, defective locations and deal with scheme accordingly.

Above-mentioned vehicle fault diagnosis equipment is through the input of keypad portion; Setpoint engine machine oil, antibacterial air filter, tire location, change speed gear box machine oil, drg and the replacement cycle of being with synchronously; If arrive the replacement cycle that sets, then export through telltale portion and audio output unit.

According to said structure; Vehicle fault diagnosis equipment of the present invention can the early detection vehicle unusual; Prevent to expand to the miscellaneous part fault; Thereby can reduce maintenance cost, and inform the state of vehicle in real time, thereby can take precautions against going or the danger factor brought of driver in advance to vehicle to the driver.

In addition; Have the advantage that can carry out the history management of vehicle through external memory storage or wireless communication module etc., and in the maintenance factory of vehicle, only through submitting external memory storage; Also can promptly grasp the trouble location of vehicle, so have the effect that to keep in repair rapidly.

Description of drawings

Fig. 1 is the block diagram of vehicle fault diagnosis equipment of the present invention.

Fig. 2 is the precedence diagram of vehicle fault diagnosis equipment of the present invention.

Accompanying drawing number:

The 10:OBD-II adaptor union

20: microprocessor

21: connector portion

22: control part

23: memory section

24: nonvolatile memory

25: volatile memory

26: external memory slot

27: the 1 serial ports

28: the 2 serial ports

The 29:GPS module

30: telltale portion

40: audio output unit

50: keypad (keypad) portion

60: wireless communication module

70: external device

The specific embodiment

Below, with reference to accompanying drawing, vehicle fault diagnosis equipment of the present invention is described at length.

Fig. 1 is the block scheme of vehicle fault diagnosis equipment of the present invention, and Fig. 2 is the precedence diagram of vehicle fault diagnosis equipment of the present invention.

As shown in Figure 1, vehicle fault diagnosis equipment of the present invention comprises:connector portion 21, and it imports the sensing data and the failure code data of vehicles through data cable from the OBD-II adaptor union 10 of vehicle; Themicroprocessor 20 that comprises control part 22 andmemory section 23, its computing is also handled the data through above-mentionedconnector portion 21 inputs; Telltaleportion 30 and audio output unit 40, its mode with picture and sound is exported by above-mentionedmicroprocessor 20 computings and the data after handling; The 1st serial port 27, it is connected withwireless communication module 60 in order to transmit from the data of above-mentionedmicroprocessor 20 outputs and to receive exterior data; The 2ndserial port 28, it is connected withexternal device 70 in order to transmit from the data of above-mentionedmicroprocessor 20 outputs and to receive exterior data; With external memory slot 26, it is used for the data storage of exporting from above-mentionedmicroprocessor 20 to external memory storage.In addition, further be formed with: theGPS module 29 that is used for the data time of reception, position data; With thekeypad portion 50 that is used for the control vehicle failure diagnosis apparatus.It should be noted that though diagram not also possesses power supply unit (not shown), this power supply unit is in order to make vehicle fault diagnosis equipment work of the present invention, and accepts power supply from Vehicular battery.

OBD-II is one of relevant regulations of the vehicle exhaust emissions of the U.S.; It is the computing machine that is defined as through built-in in the vehicle; Diagnose vehicle exhaust function unit in service or system; Thereby when being judged to be fault, storage failure code (DTC:Diagnostic Trouble Code) is also lighted the rules of Warning light (MIL:Malfunction Indicator Light).Because the initial OBD system in the past that uses only carries out the check of the short circuit of electronic unit and wiring etc.; So not only can't know the situation that causes exhaust to increase because of the improper behavior of thermalization, sensor or the actuator (actuator) of catalyst or oxygen sensor etc.; And owing to be used for the go out form normalisation not as yet of benchmark and institute's canned data of point with diagnostic installation bonded assembly adaptor union, failure code, Warning light; Therefore by vehicle or make manufacturer and need different adaptor unions, and a lot of confusions and inconvenient such as various data that cause needs to be equipped with being used for the resolve fault code.

In order to address these problems; In the OBD-II rules; Adopt the standardized universal diagnostic installation to connect the term and the failure code of adaptor union and communication specification electronic control part; And the project that exhaust increases during by et out of order increases the fault verification benchmark and diagnoses necessary condition etc., corrects.

Based on the checkup item of OBD-II rules be that catalyst, engine catch fire, fuel system, the outflow of air conditioner refrigerant, the leakage of evaporated gas system; Oxygen sensor; EGR (exhaust gas recycle); Thermostat (heat regulator), PCV (Positive Crankcase Ventilation, positive crankcase ventilator) valve, the control that is used in other engines or driving device or diagnotic sensor sum spiral pipe (solenoid).

General adaptor union 10 based on above-mentioned OBD-II rules is formed near the driver's seat lower end of vehicle, and vehicle fault diagnosis equipment of the present invention utilizes data cable to carry out the transmission of data between above-mentioned OBD-II adaptor union 10 and connector portion 21.The transmission of data is the car fault diagnosis standard agreements that utilize ISO9141-2 or KWP2000, carries out through CAN or K-Line.

Above-mentioned ISO9141-2 and KWP2000 are ISO (International Organization forStandardization, International Standardization Organization) and the specified car fault diagnosis standard agreement of SAE (Society of AutomotiveEngineers, the motor-driven IEEE of the U.S.); CAN (Controller Area Network; Controller local area network) be spendable network communication mode in the small-scale scope, it uses the deagnostic communication mode as vehicle of future generation, and speed is 500Kbps～1Mbps; Compare with communication speed in the past; Fast more than 50 times, K-Line is that the vehicle that defines in the OBD rules is used the deagnostic communication line, and it has the speed of 10.4Kbps.

Above-mentionedmicroprocessor 20 comprises control part 22 andmemory section 23; Above-mentioned control part 22 bases are program stored in advance; Computing is also handled the data throughconnector portion 21 or 27,28 inputs of the 1st and the 2nd serial port, temporarily is stored in thevolatile memory 25 ofmemory section 23 by above-mentioned control part 22 handled data, perhaps in the nonvolatile memory that stores the failurecode data bank 24, is stored as file; Based on above-mentioned file, but the historic records of management vehicle.It should be noted that; Also can download sensing data or the failure code data that are stored as the vehicle that in vehicle operating, is obtained of file in the above-mentionednonvolatile memory 24 through external memory slot 26; Perhaps be connected toexternal device 70; Download file, thereby have the information that can both grasp vehicle anywhere, and the advantage of the historic records of management vehicle easily.

Said external memory bank 26 has following advantage: the handled at work data of store car failure diagnosis apparatus in like external memory storages such as SD memory devices; Download the sensing data or the failure code of vehicle; Thereby the individual can be through the computer management historic records; In the maintenance factory of vehicle,, also can promptly grasp the trouble location of vehicle only through submitting external memory storage.It should be noted that, also can pass through computing machine, be connected to corresponding website, externally download the upgrade data of vehicle fault diagnosis equipment of the present invention in the memory device, so that vehicle fault diagnosis equipment is kept up-to-date data.

Above-mentioned vehicle fault diagnosis equipment through with thewireless communication module 60 of above-mentioned the 1st serial port 27 bonded assemblys such as CDMA, GSM or wireless LAN module; Send the data of vehicle fault diagnosis equipment with wireless mode; Thereby can transmit the state with the cooresponding vehicle of these data in real time to the outside, when producing failure code, if utilizewireless communication module 60 to transmit to the outside; Then receive more detailed counte-rplan, can prevent accident in advance.It should be noted that, also can receive Useful Informations such as road or Weather information from the outside, offer the driver through above-mentioned wireless communication module 60.In addition, also can utilizewireless communication module 60, download the internal processes or the failure code data bank of vehicle fault diagnosis equipment, carry out the upgrading of vehicle fault diagnosis equipment in real time with wireless mode.It should be noted that above-mentioned CDMA and gsm module also can be common mobile phones.

Above-mentioned vehicle fault diagnosis equipment through with above-mentioned the 2ndserial port 28 bonded assemblys such asexternal devices 70 such as PDA, omniselector module; Can be used as multimedia equipment uses; Perhaps also can use as navigational aid under steam, when producing failure code, also can inform the driver through audio output unit 40 ortelltale portion 30; Also can above-mentioned the 2ndserial port 28 be connected with computing machine, with the internal processes or the failure code data bank of upgrading vehicle fault diagnosis equipment.

As far as the above-mentioned the 1st and 2serial ports 27,28, also can only form among both, utilize a serial port optionally to connectwireless communication module 60 andexternal device 70.

Has following effect: as stated; Can pass through external memory storage, with the multiple device of the 1st or 2 serial port bonded assemblys, carry out the upgrading of vehicle fault diagnosis equipment, therefore; Can make vehicle fault diagnosis equipment keep up-to-date state; When the failure code data change by the vehicle type of mounting vehicle failure diagnosis apparatus, because the vehicle fault diagnosis equipment of upgrading easily, thereby in other vehicle types, also can easily use.

In above-mentioned vehicle fault diagnosis equipment, also form GPS (Global Positioning System; Global positioning system)module 29; From the satellite data time of reception and position data, can know the correct time and the current location of vehicle, can also know the moving velocity of vehicle.

Aforementioneddisplay device portion 30 is with the data of picture output by above-mentionedmicroprocessor 20 calculation process; As aforementioneddisplay device portion 30, preferably adopt little power consumption, the wide LCD (Liquid CrystalDisplay, Liquid Crystal Display (LCD)) in visual angle; So that the passenger of co-pilot seat also can discern; Owing to might have an accident because of the driver operateskeypad portion 50 when driving,, make the driver directly click the picture of LCD so preferably in LCD, adhere to Trackpad (touch pad).The loud speaker of tut efferent 40 through installing in the vehicle fault diagnosis equipment; With the data of voice output after by above-mentionedmicroprocessor 20 calculation process; Even thereby the driver does not check the picture oftelltale portion 30, also can discern the state of vehicle, tut efferent 40 can also possess circuit output (line out) terminal or light output end except loud speaker; With the audio frequency apparatus direct connection of vehicle, thereby can come output sound with good sound quality more.

Vehicle fault diagnosis equipment of the present invention also possesses startup security module (not shown), when not being when obtaining the driver of authentication, prevents to start vehicle, thereby can prevent that vehicle is stolen.Above-mentioned startup security module is electrically connected with the start-up system of vehicle, and the driver's through taking vehicle fingerprint or iris identification etc. are differentiated the driver who obtains authentication, after authentication finishes, can start vehicle, thereby can prevent that vehicle is stolen.As driver's authentication mode, be not only above-mentioned fingerprint or iris identification, also can be password input mode; In order to tighten security; The preferred mixing adopted multiple authentication mode, and considers the situation of the vehicle that a plurality of people drive, and preferably can register a plurality of drivers.

It should be noted that, also can the mounting distance determination sensor, when the rear of vehicle is retreated; Distance between mensuration and the object; According to the distance of vehicle when retreating and between the object, make height or the sound generating period of sound different through audio output unit 40, to inform the driver; Perhaps also can also possess rear rang sensor (not shown), but through 30 visual identification ground output of telltale portion and the distance between the object of rear view of vehicle.

In addition, can also possess driving range computing module (not shown), in vehicle for the first time behind the mounting vehicle failure diagnosis apparatus through going for the first time; Analyze the operating range of vehicle and from the reception value of fuel determination sensor, the per minute rotating speed (RPM) of analyzing average consumprion and vehicle goes from the second time of vehicle perhaps based on the consumption of fuel of speed; Reception value through the fuel determination sensor; Consumption of fuel is calculated and exported to the distance that shows drivable according to moving velocity of vehicle etc., in real time; And constantly upgrade driving range; When the driver is not able to do in time filling fuel,, inform that the driver injects fuel through sound or picture.

Preferably with above-mentioned startup security module, rear rang sensor and driving range computing module as option, let the buyer of vehicle fault diagnosis equipment optionally buy installation, to alleviate buyer's burden according to expense.

One example of precedence diagram of the work of vehicle fault diagnosis equipment when Fig. 2 is the operation of expression vehicle; If connect the power supply of vehicle fault diagnosis equipment; Then import the sensing data of vehicle in real time to vehicle fault diagnosis equipment through connector portion 21 from above-mentioned OBD-II adaptor union 10; If the driver is no abnormal in order to know that vehicle has, and push the diagnostic button of keypad portion 50, then the control part 22 of microprocessor 20 perceives this push action; Various sensors through above-mentioned OBD-II adaptor union 10 scanning vehicles come perception whether to export failure code.If do not export failure code; Then, export the no problem situation of vehicle to the driver with sound or picture, if perceive failure code through telltale portion 30 or audio output unit 40; The control part 22 of then above-mentioned microprocessor 20 is searched cooresponding therewith failure code from the failure code data bank that above-mentioned nonvolatile memory 24 is stored; Through sound or picture export vehicle defective locations, defective content and with the cooresponding scheme of dealing with of defective, it should be noted that, also can pass through wireless communication module 60; With transmission failure code data such as vehicle management servers, obtain the cooresponding therewith detailed scheme of dealing with.

If to above-mentioned vehicle fault diagnosis equipment energized; And the driver does not push the diagnostic button of keypad portion; Then vehicle fault diagnosis equipment comes computing by the control part 22 of above-mentionedmicroprocessor 20 and handles the sensing data of the various sensors of the vehicle of importing in real time from OBD-II adaptor union 10; And export with picture or sound, if the sensor values of the vehicle that is in operation is greater than pre-set threshold, then with sound or picture warning driver; Cause driver's attention; Even the driver does not push the diagnostic button of keypad portion, if be in operation the input fault code, then the control part 22 ofmicroprocessor 20 also can be searched cooresponding therewith failure code from the failure code data bank that above-mentionednonvolatile memory 24 is stored; Defective locations through sound or picture output vehicle, defective content, with the scheme of dealing with of this defective response; It should be noted that, also can send the failure code data with vehicle management server etc., obtain the cooresponding therewith detailed scheme information of dealing with throughwireless communication module 60.

In the acceptance in service of common vehicle and handle from the sensing data of the various sensors of the vehicle of OBD-II adaptor union 10 inputs; And export so that the driver can discern with picture or sound; If the driver pushes the diagnostic button ofkeypad portion 50 or at the input fault code in service of vehicle; Then handle accordingly therewith, inform this situation to the driver.

The sensing data of above-mentioned vehicle is voltage, tire air pressure, change-speed box oil temperature, engine cooling water temperature of battery etc.; When these data are applied to actual product; Also can change; If but the unfamiliar driver of the structure of vehicle is informed the multiple sensors value, then might increase the weight of confusion, so preferably only export aforesaid basic sensor values.It should be noted that, also can more specifically understand from the driver of the sensing data of vehicle fault diagnosis equipment output,, optionally export various sensing datas through the operation ofkeypad portion 50 towards hope.

In addition; The driver is through the operation ofkeypad portion 50; After the replacement cycle of each consumable store of store car,, then export to the user with picture or sound when the replacement cycle of being stored that arrives each consumable store; Replacing before using up in the life-span of each consumable store, thus the situation that the fault because of consumable store in service that can in advance prevent vehicle can't operational vehicle.In above-mentioned content, each consumable store are engine oils, antibacterial air filter, and tire location, change speed gear box machine oil, drg is with synchronously etc., but is not limited thereto, and preferably can store a greater variety of consumable store.

Claims (11)

1. vehicle fault diagnosis equipment, this equipment is each sensing data that obtains vehicle, and with the equipment that the discernible mode of driver is exported, it is characterized in that,

This vehicle fault diagnosis equipment comprises:

Connector portion (21), it imports the sensing data and the failure code data of vehicle through data cable from the OBD-II adaptor union (10) of vehicle;

The microprocessor (20) that comprises control part (22) and memory section (23), its computing is also handled the data through above-mentioned connector portion (21) input;

Telltale portion (30) and audio output unit (40), its mode with picture and sound are exported by above-mentioned microprocessor (20) computing and the data after handling;

The 1st serial port (27), it is connected with wireless communication module (60) in order to transmit from the data of above-mentioned microprocessor (20) output and to receive exterior data;

The 2nd serial port (28), it is connected with external device (70) in order to transmit from the data of above-mentioned microprocessor (20) output and to receive exterior data; With

External memory slot (26), its be used for from the data storage of above-mentioned microprocessor (20) output to external memory storage,

Wherein the failure code data of vehicle fault diagnosis equipment are sent to the outside through wireless communication module (60); With reception and from the cooresponding scheme information of dealing with of exterior failure code; And through the failure code data bank or the internal processes of wireless communication module (60) download vehicle fault diagnosis equipment, with the vehicle fault diagnosis equipment of upgrading in real time.

2. vehicle fault diagnosis equipment according to claim 1 is characterized in that,

Above-mentioned vehicle fault diagnosis equipment carries out the transmission of data through CAN or K-Line between the OBD-of vehicle II adaptor union (10) and connector portion (21).

3. vehicle fault diagnosis equipment according to claim 2 is characterized in that,

The memory section (23) of above-mentioned microprocessor (20) is made up of the volatile memory (25) of temporary transient storage data and the nonvolatile memory (24) that stores the failure code data bank.

4. vehicle fault diagnosis equipment according to claim 3 is characterized in that,

Above-mentioned vehicle fault diagnosis equipment also comprises: be used for data and the GPS module (29) of the position data time of reception.

5. vehicle fault diagnosis equipment according to claim 4 is characterized in that,

Above-mentioned vehicle fault diagnosis equipment also is formed with the keypad portion (50) that is used for the control vehicle failure diagnosis apparatus.

6. vehicle fault diagnosis equipment according to claim 5 is characterized in that,

Above-mentioned wireless communication module (60) is CDMA module, gsm module or wireless LAN module.

7. vehicle fault diagnosis equipment according to claim 6 is characterized in that,

Said external equipment (70) is PDA or omniselector.

8. vehicle fault diagnosis equipment according to claim 7 is characterized in that,

If above-mentioned vehicle fault diagnosis equipment does not have the input of the trouble diagnosing button of keypad portion (50) after the startup of vehicle; Then by microprocessor (20) computing and handle the sensing data of the vehicle that is obtained from OBD-II adaptor union (10), and export through telltale portion (30) and audio output unit (40).

9. vehicle fault diagnosis equipment according to claim 8 is characterized in that,

The sensor data are the voltage of tire air pressure, change-speed box oil temperature, engine cooling water temperature and battery.

10. vehicle fault diagnosis equipment according to claim 9 is characterized in that,

If above-mentioned vehicle fault diagnosis equipment after the startup of vehicle from the failure code data of OBD-II adaptor union (10) input vehicle; Then the failure code data of database with the middle storage of above-mentioned nonvolatile memory (24) compares union, and resolves content, defective locations and deal with scheme accordingly through telltale portion (30) and audio output unit (40) output failure code.

11. vehicle fault diagnosis equipment according to claim 10 is characterized in that,

Above-mentioned vehicle fault diagnosis equipment is through the input of keypad portion (50); Setpoint engine machine oil, antibacterial air filter, tire location, change speed gear box machine oil, drg and the replacement cycle of being with synchronously; If arrive the replacement cycle that sets, then export through telltale portion and audio output unit.

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