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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (On-Board Diagnostic - Rear Body Control Module (RBCM)) >> DTC B11DA-16: Front Door Key Cylinder Switch (LH) Circuit Malfunction >> Notes

DTC B11DA-16: Front Door Key Cylinder Switch (LH) Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
System malfunction location  Front door key cylinder switch (LH) circuit malfunction
Detection condition 
  • With the front door key cylinder switch (LH) off, the rear body control module (RBCM) detects front door key cylinder switch (LH) voltage of 4 V or less. 
Fail-safe  -
Possible cause 
  • Front door latch and lock actuator (LH) connector or terminal malfunction
  • Front door key cylinder switch (LH) malfunction
  • Rear body control module (RBCM) connector or terminal malfunction
  • Short to ground in wiring harness between rear body control module (RBCM) terminal 3H and front door latch and lock actuator (LH) terminal H
  • Rear body control module (RBCM) malfunction
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