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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 232 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Content Theft Deterrent Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF.
  2. Verify each indicator/message transitions between the ajar and closed state while opening and closing each vehicle door, hood, and rear compartment.
    • If the indicator/message does not change 

      Refer to Vehicle Access.

    • Go to next step: If each indicator/message changes 
  3. Completely lower the driver door window and close all vehicle doors, ignition OFF.
  4. Arm the content theft deterrent system by locking the door with the keyless entry transmitter.
  5. Verify the scan tool Content Theft Deterrent Alarm Status parameter is Armed.
    • Go to next step: If Armed 
  6. Without disarming the system, reach in through the open driver window and open the driver door.
  7. Verify the scan tool Content Theft Deterrent Alarm Status parameter is Alarm.
    • If not Alarm 

      Replace the K9 Body Control Module.

    • Go to next step: If Alarm 
  8. All OK.
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