DTC C1646-81: CAN Message Failure - TCU: General Description

CAN communication consists of LOW line and HIGH communication line so that each control modules (EMS, Cluster, YRS, ESP/ESC, etc.) can exchange information.

BSD system receives vehicle speed or YAW RATE (body tilt) information from the received messages, decides whether or not to activate alarm, and receives turn signal information and control lighting or flashing of BSD indicator LED in case of alarm.