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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Safety Connect System - Diagnostic Codes (2 Of 2) & Symptom Tests >> Safety Connect System >> DTC B15C4: Airbag Signal Malfunction/Not Input [10/2017 - 10/2020] >> Description

DTC B15C4: Airbag Signal Malfunction/Not Input [10/2017 - 10/2020]: 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 stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C4 Airbag Signal Malfunction/Not Input DCM (Telematics Transceiver) detects an error continuously for 10 seconds in the signal from airbag ECU assembly when power switch is on (IG).
  • Airbag system
  • Harness or connector
  • Airbag ECU assembly
  • DCM (Telematics Transceiver)