JP2020083138A - Vehicle electronic control device and diagnostic system - Google Patents

Abstract

To provide a vehicular electronic control device and a diagnostic system capable of suitably performing inspection such as vehicle inspection by using a DTC.SOLUTION: A vehicle electronic control device 5 includes a vehicle storage section 23, a vehicle acquisition section 27, a vehicle determination section 29 and a vehicle processing section 31. The vehicle storage section 23 stores a DTC that is a failure code indicating an abnormality of a vehicle 3. When an inspection tool 7 makes a request for reading out a specific DTC used for determination of the state of the vehicle 3, the vehicle acquisition section 27 acquires, from the inspection tool 7, first time information indicating the time of final reception of specific DTC information from a management server 9 and acquires second time information indicating the time of the reading-out request. The vehicle determination section 29 compares the times indicated by the first time information and the second time information with each other, and determines whether a lapsed time that is a time interval of the times indicated by both of the time information is a predetermined determination time or longer. The vehicle processing section 31 performs processing in accordance with the determination result.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a vehicle electronic control device mounted on a vehicle and a diagnostic system including the vehicle electronic control device and an inspection tool.

Conventionally, OBD is known as a function of an on-vehicle electronic control device (that is, a vehicle electronic control device). OBD is an abbreviation for On-board Diagnostics. This OBD detects that some kind of abnormality has occurred in various sensors, actuators, etc. mounted on the vehicle, and records a failure code corresponding to the abnormality. Hereinafter, the failure code is also referred to as DTC. DTC is an abbreviation for Diagnostic Trouble Code.

Further, in recent years, various maintenance work support devices that support vehicle maintenance work using DTC have been proposed. For example, there is known a device that acquires a DTC from a vehicle using an inspection tool (that is, a scan tool), diagnoses the state of the vehicle from the DTC, and performs necessary processing according to the diagnostic result. For example, see Patent Document 1 below.

JP, 2005-81849, A

The DTC described above indicates an abnormality such as the past of the vehicle. Therefore, in the future, for example, in the automobile inspection registration system (that is, vehicle inspection), it is possible to use this DTC for the inspection of the state of the vehicle, but sufficient examination is necessary.

Then, when the case where DTC is used for vehicle inspection as described below was examined, it was found by the inventor of the present application that the following problems exist.
For example, among DTCs, it is conceivable that a predetermined DTC indicating a failure that does not meet the safety standards of the Road Transport Vehicle Act is defined as a specific DTC, and if this specific DTC is read by an inspection tool, the vehicle inspection is rejected. That is, when the specific DTC is stored in the vehicle electronic control unit, it is possible to make the vehicle inspection fail.

When the vehicle inspection is performed as described above, the following system can be considered.
Information such as the specific DTC and its version (that is, specific DTC information) is stored in the management server of the specific DTC management mechanism. Then, at the time of vehicle inspection, the management server is accessed in advance from the inspection tool to acquire and update the specific DTC information, and then the inspection tool inspects whether the specific DTC has occurred in the vehicle.

As a usage environment of this inspection tool, for example, assuming a small maintenance shop, a standalone type that can be realized with a relatively inexpensive configuration that is used as a single inspection tool without always connecting to the management server is considered. Be done.

When this inspection tool is used as a stand-alone type, the specific DTC information stored in the inspection tool needs to be updated by accessing the management server, and thus it is necessary to update it regularly.

However, if the specific DTC information is not updated for some reason, the vehicle inspection may not be performed accurately based on the latest specific DTC information. For example, when a vehicle inspection is performed based on old specific DTC information that is not the latest specific DTC information, a vehicle that originally failed vehicle inspection may be passed.

One aspect of the present disclosure is to provide an electronic control device for a vehicle and a diagnostic system that can suitably perform an inspection such as a vehicle inspection using the DTC.

a) One aspect of the present disclosure is a vehicle electronic control device (5) mounted on a vehicle (3), which includes a storage unit (23), an acquisition unit (27), a determination unit (29), and a processing unit ( 31) and.
The storage unit stores a DTC, which is a failure code indicating a vehicle abnormality.

When there is a request from the inspection tool (7) to read out a specific DTC that is a specific failure code used to determine the vehicle state from the inspection tool (7), the acquisition unit outputs the specific DTC information including the specific DTC from the inspection tool. The first time information indicating the time of last reception from the management server (9) is acquired, and the second time information indicating the time of the read request is acquired.

The determination unit compares the timings indicated by the first timing information and the second timing information, and determines whether the elapsed time, which is the time interval between the timings indicated by both timing information, is equal to or longer than a predetermined determination time.
The processing unit performs processing according to the determination result.

With such a configuration, when the inspection tool issues a read request for the specific DTC, the first time information and the second time information are acquired, and the elapsed time indicated by both time information is determined by the predetermined determination. It is determined whether or not it is time or longer, and processing is performed according to the determination result.

Therefore, it is possible to determine whether or not the specific DTC information received from the management server is excessively old in terms of time, and it is possible to perform appropriate processing according to the determination result.
For example, when the specific DTC information is old, it is possible to take measures such as requesting the inspection tool to update to the latest specific DTC information.

As a result, when the latest specific DTC information is updated, it is possible to reliably determine the state of the vehicle. Therefore, it is possible to reliably determine whether the vehicle inspection passes or fails.

b) Another aspect of the present disclosure is a diagnostic system (13) including a vehicle electronic control unit and an inspection tool.
The vehicle electronic control unit is mounted on a vehicle and stores a DTC which is a failure code indicating an abnormality of the vehicle.

The inspection tool receives the specific DTC information including the specific DTC which is a specific failure code used for determining the state of the vehicle from the DTC, stores the specific DTC information from the management server, and finally receives the specific DTC information from the management server. The first time information indicating the time when the operation is performed is stored.

Further, the vehicle electronic control device includes an acquisition unit, a determination unit, and a processing unit.
The acquisition unit acquires the first time information from the inspection tool and the second time information indicating the time of the read request when the inspection tool issues a read request for the specific DTC.

The determination unit compares the timings indicated by the first timing information and the second timing information, and determines whether the elapsed time, which is the time interval between the timings indicated by both timing information, is equal to or longer than a predetermined determination time.
The processing unit performs processing according to the determination result.

With such a configuration, the same effect as that of the above-described one aspect of the present disclosure can be obtained.
It should be noted that the reference numerals in parentheses described in this column and in the claims indicate the correspondence with the specific means described in the embodiments described below as one aspect, and do not indicate the technical scope of the present disclosure. It is not limited.

The block diagram which shows the vehicle inspection system of 1st Embodiment. The block diagram which shows the vehicle electronic control unit of 1st Embodiment. The block diagram which shows the inspection tool of 1st Embodiment. The sequence diagram which shows the procedure of communication between the vehicle electronic control unit and inspection tool of 1st Embodiment. The flowchart which shows the process of the inspection tool with respect to the management server of 1st Embodiment. The flowchart which shows the process of the inspection tool with respect to the vehicle electronic control apparatus of 1st Embodiment. The flowchart which shows the process of the vehicle electronic control apparatus with respect to the inspection tool of 1st Embodiment. The flowchart which shows the process of the inspection tool with respect to the vehicle electronic control apparatus of 2nd Embodiment. The flowchart which shows the process of the vehicle electronic control apparatus with respect to the inspection tool of 2nd Embodiment. The block diagram which shows the vehicle inspection system of 2nd Embodiment.

Embodiments of the present disclosure will be described below with reference to the drawings.
[1. First Embodiment]
[1-1. overall structure]
First, an overall system (that is, a vehicle inspection system) including the diagnostic system of the first embodiment will be described.

As shown in FIG. 1, a vehicle inspection system 1 according to the first embodiment is an electronic control unit (that is, a vehicle electronic control unit) 5 mounted on a vehicle 3 and an inspection electrically connected to the vehicle electronic control unit 5. The tool 7 and the management server 9 connected to the inspection tool 7 via the Internet are provided. In the following, the electronic control unit may be referred to as an ECU.

Here, an example is shown in which the vehicle ECU 5 and the inspection tool 7 are connected by the cable 11, but they may be connected by wireless. The diagnostic system 13 is configured to include the vehicle ECU 5 and the inspection tool 7.

In the vehicle inspection system 1 described above, processing for vehicle inspection and the like are performed as follows.
First, of the DTCs that are the failure codes indicating the abnormality of the vehicle 3, a predetermined DTC indicating a failure that does not satisfy the safety standard of the Road Transport Vehicle Act is defined as a specific DTC. When this specific DTC is read by the inspection tool 7 from the vehicle ECU 5, the vehicle inspection is rejected.

That is, when the DTC provided with the safety standard is set as the specific DTC and the specific DTC is stored in the vehicle ECU 5, the vehicle inspection is rejected.
Specifically, the information such as the specific DTC and the version thereof, that is, the specific DTC information that is the information regarding the specific DTC is stored in the management server 9 of the specific DTC management mechanism. At the time of vehicle inspection or the like, the inspection tool 7 accesses the management server 9 to acquire and update the specific DTC information, and then the inspection tool 7 inspects the vehicle 3 for occurrence of the specific DTC. ..

The environment in which the inspection tool 7 is used in the vehicle inspection system 1 is, for example, a stand-alone type in which the inspection tool 7 alone is used independently without always connecting to the management server 9, assuming a small maintenance shop. It is adopted.

When this inspection tool 7 is used as a stand-alone type, that is, when the inspection tool 7 alone is used to inspect the occurrence of a specific DTC, or when it is determined whether the vehicle inspection has passed or failed, the specific DTC information is inspected. It must be stored in the tool 7. Therefore, the specific DTC information needs to be updated by accessing the management server 9 as described later.

[1-2. Each configuration]
Next, each component of the diagnostic system 13 and the like of the first embodiment will be described in detail.
<Vehicle electronic control unit>
As shown in FIG. 2, the vehicle ECU 5 is an electronic control unit centered on a microcomputer that constitutes the vehicle arithmetic processing unit 21, and some abnormality occurs in various sensors, actuators, etc. mounted on the vehicle while the vehicle 3 is running. It has an OBD function to detect the fact that it has done.

Specifically, the vehicle ECU 5 includes a vehicle calculation processing unit 21 that performs various calculations, a vehicle storage unit 23 that stores various data, a vehicle connector 25 that is a connection terminal to the outside, and the like. Although not shown, the vehicle calculation processing unit 21 is composed of a CPU, a ROM, a RAM, and the like. The vehicle connector 25 is connected to a connector (not shown) at one end of the cable 11.

The vehicle storage unit 23 is a rewritable non-volatile memory such as a flash memory, and when an abnormality of the vehicle 3 is detected, the DTC corresponding to the abnormality is recorded.

The vehicle calculation processing unit 21 has a vehicle acquisition unit 27, a vehicle determination unit 29, and a vehicle processing unit 31 as a functional configuration realized by the CPU executing a program.
When the inspection tool 7 requests the vehicle acquisition unit 27 to read out a specific failure code (that is, a specific DTC) used to determine the state of the vehicle from the DTC, the inspection tool 7 determines that the inspection tool 7 includes the specific DTC. First time information (for example, first time stamp) indicating the time when the DTC information was last received from the management server 9 is acquired. At the same time, the second timing information (for example, the second time stamp) indicating the timing of the read request is acquired based on the time information by the timer (not shown).

As is well known, the time stamp is a record that serves as proof that electronic data existed at a certain time (here, the last received time or the read request time).

As the specific DTC information, in addition to the specific DTC, for example, version information of the specific DTC information, vehicle information regarding the type of the vehicle 3 subject to vehicle inspection, ECU information regarding the ECU mounted on the vehicle 3, communication protocol, etc. , Specific DTC definition and the like.

The vehicle determination unit 29 compares the timings indicated by the first timing information and the second timing information, and determines whether the elapsed time, which is the time interval between the timings indicated by both timing information, is equal to or greater than a predetermined determination time. To do.
The first time stamp information and the second time stamp information include the first time stamp and the second time stamp indicating the time itself. Further, as the first time information, information of the update time when the specific DTC information is updated, that is, a first time stamp indicating the update time, and/or a unique information such as version information of the specific DTC information that can specify the update time Information is given.

The vehicle processing unit 31 performs the following processes (1) and (2) according to the result of the above-described determination. That is, the processing content is changed according to the determination result, and necessary processing is performed.
(1) For example, when the elapsed time is equal to or longer than the determination time, the inspection tool 7 is requested to update the specific DTC information.

Alternatively, when the elapsed time is equal to or longer than the determination time, a negative response for rejecting the read request may be transmitted or no response may be made.
(2) When the elapsed time is less than the determination time, the specific DTC or the DTC including the specific DTC (for example, all DTCs) is transmitted to the inspection tool 7.

Then, the transmission information indicating the transmitted information and the transmission time information indicating the transmission time of the transmitted information are stored in the vehicle storage unit 23.
The vehicle ECU 5 is configured so that the transmission information and the transmission time information can be read by a request from the outside such as the inspection tool 7.

<Inspection tool>
As shown in FIG. 3, the inspection tool 7 can be operated by a display 33 that performs various displays, a tool electronic control unit (that is, a tool ECU) 35 that controls the operation of the inspection tool 7, and a manual operation of an operator. The operation unit 37, the tool communication unit 39 for communicating with the management server 9, and the tool connector 41 to which the connector 12 (see FIG. 1) at the other end of the cable 11 is connected.

The tool ECU 35 includes a tool calculation processing unit 43 that performs various calculations and a tool storage unit 45 that stores various data.
Although not shown, the tool calculation processing section 43 is composed of a CPU, a ROM, a RAM and the like. The tool calculation processing unit 43 performs control such as requesting and acquiring the specific DTC information from the management server 9 or requesting and acquiring the specific DTC from the vehicle ECU 5. To do.

The tool storage unit 45 is a rewritable nonvolatile memory such as a flash memory, and stores the specific TDC information acquired from the management server 9 and the first time information when the specific TDC information was last received. It is configured. The specific DTC acquired from the vehicle ECU 5 is also stored.

The tool communication unit 39 is a communication device that wirelessly communicates with the management server 9 via the Internet. The tool communication unit 39 is not normally connected to the management server 9, but is connected to the management server 9 when necessary by an operator's operation, and downloads the latest specific DTC information, for example.

In other words, the inspection tool 7 is a stand-alone type, and is not used by always connecting to the management server 9 online but using it offline.
The various functions of the vehicle ECU 5 and the tool ECU 35 are realized by the CPU executing the programs stored in the non-transitional physical recording medium. In this example, the vehicle storage unit 23 and the tool storage unit 45 correspond to the non-transitional substantive recording medium storing the program. By executing this program, the method corresponding to the program is executed. The vehicle ECU 5 and the tool ECU 35 may each be configured by one microcomputer, or may be configured by a plurality of microcomputers.

Further, the method of realizing each processing executed by the vehicle ECU 5 and the tool ECU 35 is not limited to software, and one or a part of the functions thereof may be realized by using one or more hardware. For example, when the above function is realized by an electronic circuit which is hardware, the electronic circuit may be realized by a digital circuit including a large number of logic circuits, an analog circuit, or a combination thereof.

[1-3. Control processing]
First, the outline of the processing performed by the vehicle inspection system 1 will be described.
As shown in FIG. 4, for example, at the time of vehicle inspection, the inspection tool 7 first requests the vehicle ECU 5 to read (A) a specific DTC and (B) specific DTC information from the management server 9 first. Send the time information of.

When the vehicle ECU 5 receives the read request of the specific DTC from the inspection tool 7, the vehicle ECU 5 acquires the first time information transmitted from the inspection tool 7 and also uses the current time from the timer as the time of the read request of the specific DTC. 2. Obtain the time information.

Further, the vehicle ECU 5 determines whether or not the elapsed time of the timing indicated by the first timing information and the second timing information is equal to or longer than the determination time. If the time is longer than the determination time, the inspection tool 7 is requested to update the (C) specific DTC information.

When the inspection tool 7 receives a request for updating the specific DTC information from the vehicle ECU 5, the inspection tool 7 notifies the content thereof. For example, the fact that the request is made is displayed on the display 33, or the operator is informed that the request is made by sound or voice.

When the worker recognizes from the above notification that there is a request for updating the specific DTC information from the vehicle ECU 5, the operator operates the inspection tool 7 to download the latest specific DTC information from the management server 9, The specific DTC information is updated and stored.

Therefore, thereafter, the inspection tool 7 is used again to perform the above-described processes (A) and (B).
On the other hand, when the elapsed time is less than the determination time, it is considered that the specific DTC information is the latest information, and the vehicle ECU 5 transmits (D) all DTCs including the specific DTC to the inspection tool 7, for example. Perform processing to

Therefore, the inspection tool 7 that has received all the DTCs including the specific DTC inspects the presence or absence of the specific DTC, displays the inspection result on, for example, the display 33, and stores the inspection result in the tool storage unit 45.

Next, the processes performed by the vehicle ECU 5 and the inspection tool 7 will be specifically described.
<Process in inspection tool>
(A) Processing of the inspection tool 7 for the management server 9 In the inspection tool 7, as shown in FIG. 5, in step 100, an operation of the operation unit 37 requests the management server 9 to update the specific DTC information. .. In addition, in FIG. 5, step is described as S. Hereinafter, the same applies to each drawing.

In the following step 110, the updated specific DTC information is acquired from the management server 9. That is, the latest specific DTC information is downloaded.
In the following step 120, the updated specific DTC information and the first time information (that is, the first time stamp) indicating the time when the specific DTC information is received are stored in the tool storage unit 45, and this processing is once performed. To finish.

(B) Process of Inspection Tool 7 for Vehicle ECU 5 In the inspection tool 7, as shown in FIG. 6, in step 200, the vehicle ECU 5 is requested to acquire a specific DTC.

In step 210, the first timing information is transmitted to the vehicle ECU 5.
In the following step 220, it is determined whether or not there is a request for updating the specific DTC information from the vehicle ECU 5. If an affirmative judgment is made here, the routine proceeds to step 230, while if a negative judgment is made, the routine proceeds to step 240.

In step 230, since there is a request for updating the specific DTC information, that is notified, and this processing is once terminated. For example, the display 33 displays that there is an update request, or notifies by voice or the like.

On the other hand, in step 240, since there is no request for updating the specific DTC information, the specific DTC information is regarded as the latest, and the specific DTC transmitted from the vehicle ECU 5 is acquired.
It should be noted that, here, when a request for acquiring the specific DTC is made, the vehicle ECU 5 sets the specific DTC when the determination condition for transmitting the specific DTC described later (that is, the condition less than the determination time of S330) is satisfied. Although all DTCs including the specified DTCs are transmitted, only specific DTCs may be transmitted. For example, when making an acquisition request for a specific DTC, it is possible to specify what DTC is to be transmitted, such as “only specific DTC” or “all DTC including specific DTC”.

In the following step 250, it is checked whether or not the DTC acquired from the vehicle ECU 5 has a specific DTC.
In the following step 260, the inspection result is notified. For example, when there is a specific DTC, the specific DTC and its definition are displayed on the display 33 or notified by voice or the like. Further, it may be notified that the vehicle inspection has failed.

When there is no specific DTC, the display 33 indicates that there is no specific DTC, or a voice or the like is used. Further, it may be notified that the vehicle inspection has been passed.
<Processing in vehicle electronic control unit>
In the vehicle ECU 5, as shown in FIG. 7, in step 300, it is determined whether or not there is a read request for the specific DTC from the inspection tool 7. If an affirmative judgment is made here, the routine proceeds to step 310, while if a negative judgment is made, this processing is once terminated.

In step 310, the first time stamp, which is the first time information, is acquired from the inspection tool 7.
In the following step 320, the second time stamp which is the second time information which is the current time is acquired from its own timer.

In the following step 330, an elapsed time which is a time interval between the time indicated by the first time information and the time indicated by the second time information is obtained, and whether this elapsed time is a predetermined judgment time (for example, one month) or more. Determine whether or not. If an affirmative judgment is made here, the routine proceeds to step 340, while if a negative judgment is made, the routine proceeds to step 350.

In step 340, since the elapsed time is long, it is considered that the specific DTC information is not the latest information, and the inspection tool 7 is requested to update the specific DTC information, and the present process is temporarily terminated.

On the other hand, in step 350, since the elapsed time is short and the specific DTC information is regarded as the latest, all DTCs including the specific DTC are transmitted to the inspection tool 7. Note that only the specific DTC may be transmitted.

In the following step 360, the vehicle storage unit 23 stores the first time information, the second time information, the information transmitted to the inspection tool (that is, transmission information), and the transmission time information indicating the time when the transmission information is transmitted, This process ends once.

[1-4. effect]
The following effects can be obtained in the first embodiment.
(1a) In the first embodiment, when there is a read request for a specific DTC from the stand-alone type inspection tool 7, the first timing information and the second timing information are acquired, and both timing information indicates. It is determined whether the elapsed time is equal to or longer than a predetermined determination time.

Even if the stand-alone type inspection tool 7 is used, this determination makes it possible to determine whether the specific DTC information received from the management server 9 is old (that is, not the latest version) in terms of time. Therefore, it is possible to take appropriate measures according to the determination result.

For example, when the specific DTC information is old, it is possible to take a measure such as requesting the inspection tool 7 to update to the latest specific DTC information.
As a result, when the operator updates the latest specific DTC information, the state of the vehicle 3 can be reliably determined based on the latest specific DTC information. Therefore, it is possible to reliably determine whether the vehicle inspection passes or fails.

(1b) In the first embodiment, when the elapsed time is equal to or longer than the determination time, a negative response for rejecting the read request may be transmitted. Alternatively, no response may be made without sending a negative response.

The worker can know whether the specific DTC information received from the management server 9 is old, even by such negative response or no response, and therefore appropriate measures can be taken thereafter.
That is, in the case of a negative response or no response, the update to the latest specific DTC information can be performed on the assumption that it is the same as the update request to the latest specific DTC information.

[1-5. Correspondence of wording]
In the first embodiment, the vehicle 3 corresponds to the vehicle, the vehicle electronic control unit 5 corresponds to the vehicle electronic control unit, the inspection tool 7 corresponds to the inspection tool, the diagnostic system 13 corresponds to the diagnostic system, and the vehicle The storage unit 23 corresponds to the storage unit, the vehicle acquisition unit 27 corresponds to the acquisition unit, the vehicle determination unit 29 corresponds to the determination unit, and the vehicle processing unit 31 corresponds to the processing unit.

[2. Second Embodiment]
[2-1. Differences from the first embodiment]
Differences between the second embodiment and the first embodiment will be described below. Note that the other points are the same as those in the first embodiment. The same components as those in the first embodiment are designated by the same reference numerals.

In the second embodiment, the inspection tool 7 reads the specific DTC-related information stored in the vehicle ECU 5 to verify the validity of the OBD inspection.
Here, the specific DTC-related information is the information (that is, transmission information) of the DTC that responded to the inspection tool 7 in the past and the time stamp (that is, transmission time information) at that time. Further, the validity of the OBD inspection is the validity of the inspection using the specific DTC. That is, it means the validity of the vehicle inspection using the specific DTC.

The details will be described below.
<Process of inspection tool>
In the inspection tool 7, as shown in FIG. 8, in step 400, the specific ECU related information stored in the vehicle storage unit 23 is requested to the vehicle ECU 5.

In the following step 410, the specific DTC related information transmitted from the vehicle ECU 5 in response to the request for the specific DTC related information is acquired.
In the following step 420, the validity of the OBD inspection is verified, and this processing is once performed.

The contents of the verification of the validity of this OBD inspection include, for example, confirming the presence or absence of a specific DTC and displaying the confirmation result. The validity of the OBD inspection may be verified manually.

<Process of vehicle electronic control unit>
In the vehicle ECU 5, as shown in FIG. 9, in step 500, it is determined whether the inspection tool 7 requests the specific DTC-related information. If an affirmative judgment is made here, the routine proceeds to step 510, while if a negative judgment is made, this processing is once terminated.

In step 510, the specific DTC-related information is transmitted to the inspection tool 7, and this processing is once terminated.
[2-2. effect]
In addition to the effects (1a) and (1b) of the first embodiment, the second embodiment has an advantage that it can be verified at a later date whether the vehicle inspection performed using the inspection tool 7 was appropriate.

[3. Third Embodiment]
The third embodiment is basically the same as the first embodiment, and therefore the differences will be mainly described below. Note that the other points are the same as those in the first embodiment. The same components as those in the first embodiment are designated by the same reference numerals.

As shown in FIG. 10, the vehicle inspection system 1 according to the third embodiment includes an inspection tool 7, a vehicle electronic control unit 5, a personal computer 51, and a management server 9.
The inspection tool 7 does not include the tool communication unit as in the first embodiment, but includes the connector 55 connected to the cable 53. Although the cable 53 connects the personal computer 51 and the inspection tool 7 by wire, it may be connected wirelessly.

The personal computer 51 is configured to connect to the management server 9 via the Internet. Therefore, by operating the personal computer 51, the specific DTC information can be downloaded from the management server 9 to the personal computer 51. Further, the specific DTC information can be transmitted from the personal computer 51 to the inspection tool 7, and the specific DTC information can be stored in the inspection tool 7.

As described above, in the third embodiment, the inspection tool 7 is not provided with the tool communication unit, and the external communication device (that is, the personal computer 51) having the function of the tool communication unit is used to communicate with the management server 9. .. That is, the external communication device and the inspection tool 7 are connected by wire or wirelessly so that the inspection tool 7 functions similarly to the inspection tool 7 of the first embodiment.

The third embodiment has the same effects as the first embodiment. Further, there is an advantage that the inspection tool 7 can be simplified.
Instead of the personal computer 51, for example, a terminal such as a smartphone that can be connected to the Internet can be adopted. That is, a communication terminal such as a smartphone can be adopted as the external communication device.

[4. Other Embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and various modifications can be implemented.

(1) In the above-described embodiment, the inspection tool is used to perform the inspection of the specific DTC and the pass/fail judgment of the vehicle inspection. However, an application that can realize the same function as the inspection tool is provided on a communication terminal such as a smartphone or a personal computer. It may be stored, and a communication terminal such as a smartphone, a personal computer, or the like may have the same function as the inspection tool of the above embodiment.

(2) Further, when a well-known VCI is connected to the port of the connector of the vehicle ECU, the inspection tool, the communication terminal such as the smartphone, the personal computer, or the like is configured to communicate with the VCI, thereby realizing the above-described embodiment. The same effect as can be obtained. Note that VCI is an abbreviation for Vehicle Communication Interface.

(3) A plurality of functions of one constituent element in the embodiment may be realized by a plurality of constituent elements, or one function of one constituent element may be realized by a plurality of constituent elements. .. Further, a plurality of functions of a plurality of constituent elements may be realized by one constituent element, or one function realized by a plurality of constituent elements may be realized by one constituent element. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above-described embodiment may be added or replaced with respect to the configuration of the other above-described embodiment.

(4) In addition to the electronic control devices described above, a system having the electronic control device as a component, a program for causing a computer to function as the electronic control device, and a non-transitional actual state of a semiconductor memory or the like in which the program is recorded The present disclosure can be realized in various forms such as a recording medium and an electronic control method.

3: Vehicle, 5: Vehicle electronic control device, 7: Inspection tool, 13: Diagnostic system, 23: Vehicle storage unit, 27: Vehicle acquisition unit, 29: Vehicle determination unit, 31: Vehicle processing unit

Claims (8)

A vehicle electronic control unit (5) mounted on a vehicle (3), comprising:
A storage unit (23) configured to store a DTC which is a failure code indicating the abnormality of the vehicle;
When there is a request from the inspection tool (7) to read out a specific DTC which is a specific failure code used to determine the state of the vehicle among the DTCs, the inspection tool outputs specific DTC information including the specific DTC. An acquisition unit (27) configured to acquire the first time information indicating the time of the last reception from the management server (9) and the second time information indicating the time of the read request;
The first timing information and the second timing information are compared with each other, and it is determined whether the elapsed time, which is the time interval between the timings, is equal to or longer than a predetermined determination time. The determined determination unit (29),
A processing unit (31) for performing processing according to the result of the determination,
A vehicle electronic control device comprising: The vehicle electronic control device according to claim 1,
When the elapsed time is equal to or longer than the determination time, it is configured to request the inspection tool to update the specific DTC information.
Vehicle electronic control unit. The vehicle electronic control device according to claim 1,
When the elapsed time is equal to or longer than the determination time, a negative response that rejects the read request is transmitted, or no response is configured.
Vehicle electronic control unit. The vehicle electronic control device according to any one of claims 1 to 3,
When the elapsed time is less than the determination time, the specific DTC or the DTC including the specific DTC is configured to be transmitted to the inspection tool.
Vehicle electronic control unit. The vehicle electronic control unit according to claim 4,
Configured to store transmission information indicating the transmitted information, and transmission time information indicating a transmission time of the transmitted information,
Vehicle electronic control unit. The vehicle electronic control device according to claim 5, wherein
The transmission information and the transmission time information are configured to be readable by a request from the outside,
Vehicle electronic control unit. The vehicle electronic control device according to any one of claims 1 to 6,
As the first time information, information on the update time when the specific DTC information is updated and/or unique information that can specify the update time is used.
Vehicle electronic control unit. A vehicle electronic control device mounted on a vehicle, configured to store a DTC which is a failure code indicating an abnormality of the vehicle;
Of the DTCs, specific DTC information including a specific DTC that is a specific failure code used for determining the state of the vehicle is received from a management server and stored, and the specific DTC information is finally received from the management server. An inspection tool configured to store first time information indicative of time,
Is equipped with
The vehicle electronic control unit,
When there is a read request for the specific DTC from the inspection tool, the first time information is acquired from the inspection tool and the second time information indicating the time of the read request is acquired. And the acquisition unit
The first timing information and the second timing information are compared with each other, and it is determined whether the elapsed time, which is the time interval between the timings, is equal to or longer than a predetermined determination time. Determination unit,
A processing unit that performs processing according to the result of the determination,
Diagnostic system with.

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