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Home >> Cadillac >> 2017 >> XTS Livery >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B12A7: Optical Media Drive Internal Electronic Failure/Optical Media Drive Build Variant not Programmed >> Circuit/System Verification
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Circuit/System Verification

B12A7 39

  1. Ignition ON.
  2. Verify DTC B12A7 39 is not set.
    • If DTC B12A7 39 is set 

      Replace the A33 Media Disc Player.

    • If DTC B12A7 39 is not set 
  3. All OK.

B12A7 45

  1. Ignition ON.
  2. Verify DTC B12A7 45 is not set.
    • If DTC B12A7 45 is set 
    1. Program the A33 Media Disc Player.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the A33 Media Disc Player.
      • If the DTC does not set
    3. All OK.
    • If DTC B12A7 45 is not set 
  3. All OK.
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