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Home >> Mazda >> 2024 >> 3 Carbon Turbo, 4D Hatchback >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> On-Board Diagnostic - Connectivity Master Unit (2 Of 3) >> DTC B1A22-13: Dab Antenna Amplifier Signal Circuit Malfunction >> 4SD >> Outline

DTC B1A22-13: Dab Antenna Amplifier Signal Circuit Malfunction: 4SD: Outline

DTC B1A22-13: (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE (4SD)

System malfunction location DAB antenna amplifier signal circuit malfunction
Detection condition
  • The remote tuner (RT) detects an open circuit in the DAB antenna amplifier signal circuit or a disconnection with the DAB antenna amplifier.
Fail-safe Not applicable
Possible cause
  • Remote tuner (RT) connector or terminal malfunction
  • DAB antenna amplifier feeder malfunction
    • Open circuit in DAB antenna amplifier signal circuit
  • DAB antenna amplifier malfunction
  • Remote tuner (RT) malfunction
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