General Information

Smart Key Unit
B1625 ECM Communication Data Failure - General Information

Component inspection





General Description

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

DTC Description

Smartkey Module sets DTC B1625 if Data from ECM is error such as check sum error, Data Frame error, ID Unknown error, Data length error and Time out error.

DTC Detecting Condition





Diagnostic Circuit Diagram