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Home >> Cadillac >> 2017 >> XTS Base >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B1280: Rear Seat Entertainment Input Signal Circuit Signal Amplitude < Minimum >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify no other DTCs are set.
    • If no other DTCs are set. 
  3. Ignition ON, rear seat entertainment system ON.
  4. Verify both rear seat displays turn on with the system.
    • If one screen only does not turn on 

      Refer to Circuit/System Testing- One Screen Inoperative

    • If both screens do not turn on 

      Refer to Circuit/System Testing- Both Screens Inoperative

    • If both screens turn on with the system. 
  5. Source media from the rear video displays to the front radio display.
    • If media is not seen on front radio display 

      Refer to Circuit/System Testing- Front Radio Display Inoperative

    • If media is seen on front radio display 
  6. All OK.
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