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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Body Control Module (BCM) (1 Of 2) >> DTC B2002-49: Electrical Supply Unit (ESU) Internal Malfunction [(BCM)] >> Outline

DTC B2002-49: Electrical Supply Unit (ESU) Internal Malfunction [(BCM)]: Outline

DTC B2002:49 (BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Electrical supply unit (ESU) internal malfunction
Detection condition  
  • The body control module (BCM) detects the electrical supply unit (ESU) internal malfunction.
Fail-safe Not applicable
Possible cause  
  • Electrical supply unit (ESU) malfunction
  • Body control module (BCM) malfunction
System wiring diagram Not applicable
Connector diagram Not applicable
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