Without Seat Weight Sensor Control Module: 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 B0052:11 (BCM) (US) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Passenger-side buckle switch circuit malfunction
Detection condition	The Sophisticated Airbag Sensor (SAS) control module detects a short to ground in the passenger-side buckle switch circuit for a continuous 2 times. Preconditions The passenger-side seat belt is unfastened.
Fail-safe	Not applicable
Possible cause	Passenger-side buckle switch connector or terminal malfunction Sophisticated Airbag Sensor (SAS) control module connector or terminal malfunction Passenger-side buckle switch malfunction Short to ground in passenger-side buckle switch signal circuit Sophisticated Airbag Sensor (SAS) control module malfunction Body control module (BCM) malfunction
Courtesy of MAZDA MOTORS CORP.