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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 91 (Hybrid Control System (HEV)) >> Description and Operation >> Description >> Notes

Description and Operation: Description: Notes

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The HCU (Hybrid Control Unit) controls whole hybrid systems and is connected with each control modules (ECM, TCM, MCU, BMS ECU etc.) by CAN interface. In addition this system uses the brake switch and Clutch Pressure Sensor (CPS) signals for controlling the hybrid system.

NOTE: CAN interface is divided into hybrid and chassis CAN lines.
Fig 1: Hybrid Control System Connection Diagram
G10590648Courtesy of HYUNDAI MOTOR AMERICA

The HCU controls power & torque distribution of the engine and motor, regenerative brake, and fail-safe mode based on the vehicle information, driver's demand, engine information and high voltage battery information.

Fig 2: Hybrid Control Unit Communication Diagram
G10590649Courtesy of HYUNDAI MOTOR AMERICA