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Home >> Hyundai >> 2012 >> Elantra GLS, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Key Unit >> DTC B1625: ECM Communication Data Failure >> General Information >> General Description

General Information: General Description

Smartkey Module communicates with PCM/ECM through the serial communication line. If PCM/ECM requests authentication from Smartkey Module after IG ON, Smartkey Module check authentication with transponder then, sends this signal to PCM/ECM whether authentication is O.K or not.