LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (On-Board Diagnostic - Connectivity Master Unit) >> DTC B116A-12: Microphone Circuit Malfunction >> Notes

DTC B116A-12: Microphone 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.
Description Microphone circuit malfunction
Detection condition 
  • The connectivity master unit (CMU) detected a short to power supply in the microphone circuit for 5 s or more  with the ignition switched ON (engine off or on).
Fail-safe  Not applicable
Possible cause 
  • Microphone connector or terminal malfunction
  • Connectivity master unit (CMU) connector or terminal malfunction
  • Short to power supply in wiring harness between the following terminals:
    • Connectivity master unit (CMU) terminal 1S and microphone terminal A
    • Connectivity master unit (CMU) terminal 1T and microphone terminal B
  • Microphone malfunction
  • Connectivity master unit (CMU) malfunction
G10938096