Honda Motor Co., Ltd.
COMMUNICATION CONTROL SYSTEM

Abstract:

A communication control system includes: first/second control unit configured to control vehicle; first relay unit communicatively connected to the first control unit and having input unit to which data signal from diagnostic unit diagnosing state of the vehicle is input; second relay unit communicatively connected to the second control unit; first communication line communicatively connecting the first relay unit and the second relay unit; and second communication line disposed in parallel to the first communication line and communicatively connecting the first/second relay units. The data signal input to the first relay unit includes identification information. The first relay unit controls flow of data so that the data signal input to the first relay unit is transmitted through the second communication line when the data signal input to the first relay unit includes the identification information set to be communicated through the second communication line.