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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 84 (HEV Control System Diagnosis (HEV)) >> DTC P1A77: Check Generator Belt >> General Information >> General Description

General Information: General Description

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The HCU starts Engine through the Generator (HSG) and charges high voltage battery especially when SOC (State of Charge) is low. In case of mode changes from EV mode to HEV mode, the Generator (HSG) belt will be operated suddenly. With this reason, it needs to pay attention to this belt operation when checking belt.