Content Theft Deterrent Malfunction

Content Theft Deterrent Malfunction

Diagnostic Instructions

* Perform theDiagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* ReviewStrategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview)provides an overview of each diagnostic category.



Circuit/System Description

The content theft deterrent (CTD) system is a software based system in which the body control module (BCM) actively monitors certain inputs to determine if unauthorized vehicle access is being attempted. Based on inputs such as the door ajar switches, , and the hood ajar switch (if equipped), the BCM determines whether a CTD alarm is warranted. If unauthorized access is being detected, the BCM will pulse the vehicle horn and flash the turn signals as a means of theft deterrence.


Reference Information
Schematic Reference

Theft Deterrent System Schematics (Theft Deterrent System Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Content Theft Deterrent (CTD) Description and Operation (Content Theft Deterrent (CTD) Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)for scan tool information


Circuit/System Verification

1. Individually open and close each vehicle door while observing the door ajar indicator/message. The indicator/message should accurately transition between the door ajar and door closed state when each door is opened and closed.

• If the door ajar indicator/message does not properly transition when each door is opened and closed, refer toDoor Ajar Indicator Malfunction (w/o AN3) (Door Ajar Indicator Malfunction (w/o AN3))Door Ajar Indicator Malfunction (w/AN3) (Door Ajar Indicator Malfunction (w/AN3)) .

2. Completely lower the driver door window and close all vehicle doors.
3. Ignition OFF, arm the CTD system using the keyless entry system by pressing the transmitter LOCK button twice. Verify the scan tool CTD Status parameter displays Armed.

• If the parameter does not equal the specified value, refer toKeyless Entry System Inoperative (Keyless Entry System Inoperative) .

4. Without disarming the system, reach in through the open driver window, unlock and open the driver door. Verify the scan tool CTD Status parameter displays Alarm Active.

• If the parameter does not equal the specified value, replace the BCM.

5. With the door open, verify the vehicle horn is pulsing and the exterior lamps are flashing.

• If the horn is not pulsing, refer toHorns Malfunction (Horns Malfunction) .
• If the exterior lights are not flashing, refer toTurn Signal Lamps and/or Indicators Malfunction (Turn Signal Lamps and/or Indicators Malfunction) .




Repair Instructions

Perform theDiagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Control Module References (Programming and Relearning)for BCM replacement, setup and programming