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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Pedestrian Protection System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC B391E or B392F: Night Vision Camera >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC B391E 3A or B391E 66 is not set.
    • If the DTC is not set 
  3. Verify DTC B391E 3B, B391E 59 or B391E 7F is not set.
    • If DTC is set 
    1. Replace the B276 Night Vision Camera
    2. Verify DTC B391E 3B, B391E 59 or B391E 7F is set after replacing the B276 Night Vision Camera.
      • If the DTC does not set

        All OK.

      • If the DTC is set
    3. Replace the K172 Night Vision Control Module.
    • If the DTC is not set 
  4. Verify DTC B391E 31, B391E 34, B391E 36, B391E 38 or B391E 39 is not set.
    • If DTC is set 

      Replace the B276 Night Vision Camera

    • If the DTC is not set 
  5. Verify DTC B391E 55, B391E 56, B391E 61, B391E 62 or DTC B391E 63 is not set.
    • If DTC is set 

      Replace the B276 Night Vision Camera

    • If the DTC is not set 
  6. Verify DTC B391E 54 is not set.
    NOTE: Allow the vehicle to cool if the ambient temperature is excessive before proceeding with this diagnostic procedure. The camera will not operate with internal temperatures higher than 176°F (80°C)
    • If DTC is set 
    1. Allow the camera to cool.
    2. Clear the DTC. Verify the DTC does not set.
      • If the DTC is set, replace the B276 Night Vision Camera
      • If the DTC does not set
    3. All OK.
    • If the DTC is not set 
  7. Verify DTC B391E 00, B391E 03, B391E 04, B391E 07, B391E 08, B391E 0B, B391E 74, B392F 03, B392F 07 or B392F 0B is not set.
    • If DTC is set 
    1. Physically cycle each connection of the B276 Night Vision Camera cable.
    2. Verify DTC B391E 00, B391E 03, B391E 04, B391E 07, B391E 08, B391E 0B, B391E 74, B392F 03, B392F 07 or B392F 0B is set after cycling the cable connections.
      • If the DTC does not set

        All OK.

      • If the DTC sets after cycling the cable connections
    3. Replace the K172 Night Vision Control Module to B276 Night Vision Camera cables.
    4. Verify DTC B391E 00, B391E 03, B391E 04, B391E 07, B391E 08, B391E 0B, B391E 74, B392F 03, B392F 07 or B392F 0B is set after replacing the cables.
      • If the DTC does not set

        All OK.

      • If the DTC sets after replacing the cables
    5. Replace the B276 Night Vision Camera
    6. Verify DTC B391E 00, B391E 03, B391E 04, B391E 07, B391E 08, B391E 0B, B391E 3A or B391E 74 is set after replacing the B276 Night Vision Camera.
      • If the DTC does not set

        All OK.

      • If the DTC is set
    7. Replace the K172 Night Vision Control Module.
    • If the DTC is not set 
  8. All OK.
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