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Home >> Cadillac >> 2014 >> XTS Base >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 25 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B12A7 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2013 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.

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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