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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 163 (On-Board Diagnostic - Connectivity Master Unit) >> DTC B116A-11; Microphone Circuit Malfunction >> Notes

DTC B116A-11; Microphone Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE

Description Microphone circuit malfunction
Detection condition
  • The connectivity master unit detected a short to ground in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe function Not applicable
Possible cause
  • Microphone connector or terminal malfunction
  • Connectivity master unit connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Connectivity master unit terminal 1S and microphone terminal A
      • Connectivity master unit terminal 1T and microphone terminal B
  • Microphone malfunction
  • Connectivity master unit malfunction
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