| 摘要 |
PROBLEM TO BE SOLVED: To provide a relay device that can prevent unauthorized reprogramming of an ECU.SOLUTION: A G/W-ECU is connected with an ECU via an in-vehicle LAN and also connected with an external tool via another communication path other than the in-vehicle LAN, and relays transmission and reception of frames between the ECU and the external tool. In addition, the G/W-ECU is in a state in which reprogramming of the ECU by the external tool is prohibited, but if operation in accordance with an authentication procedure is performed to an operation part of its own vehicle, it permits relaying a reprogramming frame. Further, if operation in accordance with the authentication procedure is performed, a frame to be relayed is not limited to a reprogramming frame. In addition, a frame to be relayed is registered in advance, and if operation in accordance with the authentication procedure is performed, it permits relaying a reprogramming frame according to this. Some frames (basic relay frames) may be relayed regardless of presence or absence of the authentication procedure. |
