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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Telematics Unit Diagnosis (Except HEV) >> DTC B2860: Microphone Fail >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • MIC is not physically connected.
  1. Open in mic circuit.
  2. Short to ground of mic circuit
  3. Faulty mic
  4. Faulty TMU (MTS) Module
Enable Conditions
  • Ignition ON.
  • Battery voltage is between 9V and 16V.
  • MIC path must be turned to TMU by pushing room-mirror 3 button. (IVR recommended)
Threshold Value
  • The threshold value is going to be given according to the final MIC specification and estimation result for 3 situations: MIC open circuit, common connection and short circuit.
Diagnosis Time
  • 200ms after MIC path change.