General Information: General Description
WARNING: This page is about a different car, the 2015 Hyundai Sonata. However, it is still accessible from the selected car via links, so may be relevant.
The AHB ECU (Electronic Control Unit) sends requirement data, such as maximum capability of booster pressure, to the HECU and MCU, HCU... through CAN Bus line. The HCU orders making proper braking force to AHB ECU, regarding regenerative braking of MCU.
The Can hardware is installed in AHB ECU.