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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 >> Radio Information Display Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Verify no DTCs are present.
    • Go to next step: If no DTCs are present 
  2. Ignition ON/vehicle in service mode, infotainment system ON, verify the Info Display shows an image.
    • If the Info Display does not show an image. 

      Refer to Circuit/System Testing.

    • Go to next step: If the Info Display does show an image. 
  3. All OK
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