DTC B15C4: Airbag Signal Malfunction/Not Input [10/2014 - ]: Description

If the DCM (Telematics Transceiver) detects an error in communication between the DCM (Telematics Transceiver) and the airbag ECU assembly as a result of the DCM (Telematics Transceiver) self check, this DTC will be set.

DTC No.	DTC Detection Condition	Trouble Area
B15C4	DCM (Telematics Transceiver) detects an error in signals from airbag ECU assembly when engine switch is on (IG).	Airbag system Wire harness or connector Airbag ECU assembly DCM (Telematics Transceiver)