DTC B1477-96: Backup Power Supply Internal Malfunction (BCM): Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1477:96 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Backup power supply internal malfunction
Detection condition	The body control module (BCM) detects the backup power supply internal malfunction.
Fail-safe	Not applicable
Possible cause	Backup power supply malfunction Body control module (BCM) malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable