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Home >> Mazda >> 2024 >> 3 Carbon Turbo, 4D Hatchback >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> On-Board Diagnostics - CMU (2 Of 2) >> Diagnostic Assist Function [CMU] >> Diagnostic Test Menu >> Antenna connection status verification

Antenna connection status verification

  1. Launch the diagnostic assist function. (See ACTIVATION PROCEDURE .)
  2. Select in the following order from the diagnostic assist function initial screen.
    1. [Diagnostic Test]
    2. [Antenna Connection Status]
  3. Verify the connection status of each antenna according to the following table.
    DIAGNOSTIC RESULT

    Indication on center display Diagnostic result Content/action
    AM/FM Antenna 1 Connected No problem
    Open Open circuit in antenna amplifier power supply circuit
    • Inspect the following:
      • Antenna amplifier power supply circuit related DTCs (See DTC TABLE [CMU] .)
      • Antenna amplifier power supply circuit related symptom troubleshooting (See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM] .)
      • Antenna amplifier (Refer to [ANTENNA AMPLIFIER INSPECTION] in service information.)
      • Open circuit in antenna amplifier power supply circuit
    Short Short circuit in antenna amplifier power supply circuit
    • Inspect the following:
      • Antenna amplifier power supply circuit related DTCs (See DTC TABLE [CMU] .)
      • Antenna amplifier power supply circuit related symptom troubleshooting (See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM] .)
      • Antenna amplifier (Refer to [ANTENNA AMPLIFIER INSPECTION] in service information.)
      • Short circuit in antenna amplifier power supply circuit
    - Not equipped with glass antenna
    AM/FM Antenna 2 Connected No problem
    Open Open circuit in antenna amplifier power supply circuit
    • Inspect the following:
      • Antenna amplifier power supply circuit related DTCs (See DTC TABLE [CMU] .)
      • Antenna amplifier power supply circuit related symptom troubleshooting (See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM] .)
      • Antenna amplifier (Refer to [ANTENNA AMPLIFIER INSPECTION] in service information.)
      • Open circuit in antenna amplifier power supply circuit
    Short Short circuit in antenna amplifier power supply circuit
    • Inspect the following:
      • Antenna amplifier power supply circuit related DTCs (See DTC TABLE [CMU] .)
      • Antenna amplifier power supply circuit related symptom troubleshooting (See SYMPTOM TROUBLESHOOTING [ENTERTAINMENT SYSTEM] .)
      • Antenna amplifier (Refer to [ANTENNA AMPLIFIER INSPECTION] in service information.)
      • Short circuit in antenna amplifier power supply circuit
    - Not equipped with glass antenna
    DTV Antenna 1 Connected No problem
    Open Open circuit in front TV antenna circuit
    Short Short circuit in front TV antenna circuit
    - Not equipped with front TV antenna
    Antenna 2 Connected No problem
    Open Open circuit in front TV antenna circuit
    Short Short circuit in front TV antenna circuit
    - Not equipped with front TV antenna
    DTV Antenna 3 Connected No problem
    Open Open circuit in rear TV antenna circuit
    Short Short circuit in rear TV antenna circuit
    - Not equipped with rear TV antenna
    Antenna 4 Connected No problem
    Open Open circuit in rear TV antenna circuit
    Short Short circuit in rear TV antenna circuit
    - Not equipped with rear TV antenna
    DAB Antenna 2 Connected No problem
    Open Open circuit in glass antenna circuit
    Short Short circuit in glass antenna circuit
    - Not equipped with glass antenna
    Antenna 2 - Because it is not equipped, [-] is constantly displayed.
    SiriusXM Antenna 1 - Because it is not equipped, [-] is constantly displayed.
  4. Ends the diagnostic assist function. (See ENDING PROCEDURE .)