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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 120 (Air Conditioning System Diagnosis (HEV)) >> DTC B1687: Engine Coolant Temperature Sensor Circuit - CAN Signal >> General Information >> General Description

General Information: General Description

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On start up, the A/C Control Unit will Specified the Engine Temperature Sensor (ETS) signal through the CAN line. If the Engine Temperature is low the A/C Control Unit will change to DEF Mode.