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Home >> Cadillac >> 2019 >> CTS Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Media Disc Player Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no DTCs are present.
    • Go to next step: If no DTCs are present 
  2. Using a known good compact disc, verify the A33 Media Disc Player loads the disc.
    • If the A33 Media Disc Player does not load the disc 

      Replace the A33 Media Disc Player.

    • Go to next step: If the A33 Media Disc Player loads the disc 
  3. Verify the infotainment system successfully plays the audio from the disc.
    • If the infotainment system does not play the audio from the disc. 
    1. Attempt to playback audio from another disc
      • If audio cannot be played from any disc, replace the A33 Media Disc Player.
    • Go to next step: If the infotainment system plays the audio from the disc. 
  4. Verify the A33 Media Disc Player ejects the disc.
    • If the A33 Media Disc Player does not eject the disc 

      Replace the A33 Media Disc Player.

    • Go to next step: If the A33 Media Disc Player ejects the disc 
  5. All OK. Refer to Diagnostic Aids.
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