DTC B0053-11: Rear Buckle Switch (LH) Circuit 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 B0053:11 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Rear buckle switch (LH) circuit malfunction |
| Detection condition |
- The electrical supply unit (ESU) detects a short to ground in the rear buckle switch (LH) circuit for a continuous 2 times.
Preconditions
- The rear seat belt (LH) is unfastened.
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| Fail-safe |
Not applicable |
| Possible cause |
- Rear buckle switch (LH) connector or terminal malfunction
- Electrical supply unit (ESU) connector or terminal malfunction
- Rear buckle switch (LH) malfunction
- Short to ground in rear buckle switch (LH) signal circuit
- Electrical supply unit (ESU) malfunction
- Body control module (BCM) malfunction
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 Courtesy of MAZDA MOTORS CORP.
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