Information collection device, information collection system, information collection method, and storage medium storing program

1. An information collection device comprising a hardware processor and a communication unit that communicates with a control device installed at a vehicle, the hardware processor being configured to:

send a message in a specific way to the control device, the control device being in a test mode;

receive from the control device a determination result about a state of the control device which has been determined based on the message sent in the specific way;

send another message in a usual way to the control device in a case in which the determination result indicates that the state of the control device is normal; and

receive, from the control device, anomaly information relating to communication in the control device, in response to the other message sent in the usual way.

2. The information collection device of claim 1 , wherein the hardware processor:

sends the message to the control device outside of a predetermined communication method as the specific way, and

receives from the control device a determination result in which the state of the control device has been determined to be normal based on the message sent outside of the predetermined communication method.

3. The information collection device of claim 2 , wherein the hardware processor:

in a case in which the determination result based on the message sent outside of the predetermined communication method indicates that the state of the control device is normal, sends the other message to the control device using the predetermined communication method as the usual way, and

receives the anomaly information from the control device as a result of the state of the control device having been determined to be normal based on the message sent using the predetermined communication method.

4. The information collection device of claim 1 , wherein the hardware processor:

sends to the control device an invalid message as the message sent in the specific way, and

receives from the control device a determination result in which the state of the control device has been determined to be normal based on the invalid message.

5. The information collection device of claim 4 , wherein the hardware processor:

in a case in which the determination result based on the invalid message indicates that the state of the control device is normal, sends a valid message as the other message sent in the usual way, and

receives the anomaly information sent from the control device as a result of the state of the control device having been determined to be normal based on the valid message.

6. The information collection device of claim 1 , wherein, in a case in which the hardware processor is acquiring the anomaly information in a case in which the state of the control device is anomalous, the hardware processor discards the anomaly information.

7. An information collection system comprising the information collection device of claim 1 and a control device that controls a vehicle, wherein the information collection system is configured to:

when the control device is in the test mode: diagnose the control device in a case in which safety of the vehicle will not be affected, and

execute a process to determine the state of the control device based on the messages received from the information collection device.

8. The information collection system of claim 7 , wherein the control device executes a process to prohibit driving of the vehicle in the test mode.

9. The information collection system of claim 7 , wherein the control device, in a case in which the vehicle which is stopped moves during the diagnosis in the test mode, stops the test mode and allows usual driving of the vehicle.

10. An information collection method by which an information collection device connected to a control device installed at a vehicle collects information about the control device by communicating with the control device, the information collection method comprising a computer performing a process of:

sending a message in a specific way to the control device that is in a test mode;

receiving from the control device a determination result about a state of the control device which has been determined based on the message sent in the specific way;

sending another message in a usual way to the control device in a case in which the determination result indicates that the state of the control device is normal; and

receiving, from the control device, anomaly information relating to communication in the control device, in response to the other message sent in the usual way.

11. A non-transitory storage medium storing a program by which an information collection device connected to a control device installed at a vehicle collects information about the control device by communicating with the control device, the program being executable by a computer to perform a process comprising:

sending a message in a specific way to the control device that is in a test mode;

receiving from the control device a determination result about a state of the control device which has been determined based on the message sent in the specific way;

sending another message in a usual way to the control device in a case in which the determination result indicates that the state of the control device is normal; and

receiving, from the control device, anomaly information relating to communication in the control device, in response to the other message sent in the usual way.