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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 78 (Telematics Unit Diagnosis (HEV)) >> DTC B2860: Microphone Fail >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC strategy
  • MIC is not physically connected
  1. Mic disconnection due to microphone shortage, line disconnection, or all sorts of mic problem.
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
  • MIC in Voltage: above 2.55V
Diagnosis Time
  • 200ms after MIC path change
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