Table 1. Communication Table Sender Receiver Signal Line Main Body ECU (Multiplex Network Body ECU) Clearance Warning ECU Assembly Destination information signal CAN Communication Line ECM Clearance Warning ECU Assembly Shift position signal CAN Communication Line Combination Meter Assembly Clearance Warning ECU Assembly Vehicle speed signal CAN Communication Line Clearance Warning ECU Assembly Combination Meter Assembly Sonar information signal Clearance sonar indicator illumination request signal CAN Communication Line Clearance Warning ECU Assembly Radio Receiver Assembly Sonar information signal CAN Communication Line Radio Receiver Assembly Multi-display Assembly Video signal Digital