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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (On-Board Diagnostic - Body Control Module) >> DTC B126A-13: Front Door Lock-Link Switch (LH) Lock Circuit Malfunction >> Notes
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DTC B126A-13: Front Door Lock-Link Switch (LH) Lock Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
Description  Front door lock-link switch (LH) lock circuit malfunction
Detection condition 
  • BCM detects an open circuit in the front door lock-link switch (LH) lock circuit with the front door lock-link switch (LH) locked.
Fail-safe  Not applicable
Possible cause 
  • Front door latch and lock actuator (LH) connector or terminal malfunction
  • Open circuit in wiring harness between the following:
    • Front door latch and lock actuator (LH) terminal J-Body ground
  • Front door lock-link switch (LH) malfunction
  • BCM connector or terminal malfunction
  • Open circuit in wiring harness between the following terminals:
    • Front door latch and lock actuator (LH) terminal D-BCM terminal 2A
  • BCM malfunction
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