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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 80 (Active Air Flap Diagnosis (HEV)) >> DTC U0101: Lost Communication With TCM >> General Information >> General Description

General Information: General Description

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AAF (Active Air Flap) have High and Low line in the CAN communication which receives each vehicle condition from EMS, FATC, TCU, MCU and LDC. With this informations, AAF controls Motor properly.