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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Cellular, Entertainment, And Navigation - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B1A97 or B1A98 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON/Vehicle in Service Mode. Infotainment system ON, mute OFF.
  2. Verify clear audio is heard from each speaker, adjusting fade and balance controls to test each speaker individually.
    • If audio is inoperative from one or more speakers, or the audio emitted is not clear 

      Refer to Circuit/System Testing.

    • Go to next step: If clear audio is heard from all speakers 
  3. All OK. A fault is currently not present and may be an intermittent condition.
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