ELECTRONIC CONTROL UNIT, COMMUNICATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a vehicle system's electronic control unit capable of establishing more highly reliable communication between a sub electronic control unit and a main electronic control unit and capable of reducing a communication load related to a communication channel between the main electronic control unit and another electronic control unit.SOLUTION: An electronic control unit for communicating with a main electronic control unit comprises a communication section. When a first communication channel for communication with a plurality of external devices has become in a predetermined state, the communication section communicates with the main electronic control unit through a second communication channel for communication with the main electronic control unit.SELECTED DRAWING: Figure 1