DTC B1A32-12: Microphone Signal Circuit Malfunction: Outline

DTC B1A32-12: (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Microphone signal circuit malfunction
Detection condition	The audio amplifier detects a short to power supply in the microphone signal circuit for 30 s.
Fail-safe	Not applicable
Possible cause	Microphone connector or terminal malfunction Audio amplifier connector or terminal malfunction Short to power supply in microphone signal circuit Microphone malfunction Audio amplifier malfunction Connectivity master unit (CMU) malfunction
Courtesy of MAZDA MOTORS CORP.
1: Except e-SKYACTIV EV/e-SKYACTIV R-EV 2:e-SKYACTIV EV/e-SKYACTIV R-EV