Content Theft Deterrent Malfunction

Content Theft Deterrent Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of each 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, the trunk ajar switch, and the drivers door key cylinder switch, 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 exterior lights as a means of theft deterrent.

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. Ignition ON, 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 to Door Ajar Indicator Malfunction (Door Ajar Indicator Malfunction).

2. Open and close the trunk while observing the trunk ajar indicator/message. The indicator/message should accurately transition between the trunk ajar and trunk closed state when the trunk is opened and closed.

• If the trunk ajar indicator/message does not properly transition when the trunk is opened and closed, refer to Trunk Ajar Indicator Malfunction (Trunk Ajar Indicator Malfunction).

3. Insert the vehicle key into the driver door key cylinder and rotate the cylinder between the idle and unlock positions. Verify the scan tool LF Key Cylinder Lock Switch parameter cycles between Idle and Unlock.

• If the scan tool parameter does not cycle between the specified parameters, refer to Content Theft Deterrent (CTD) Does Not Disarm with Key Lock (Content Theft Deterrent (CTD) Does Not Disarm with Key Lock).

4. Completely lower the driver door window and close all vehicle doors.
5. Ignition OFF, arm the CTD system using the keyless entry system by pressing the keyless entry transmitter LOCK button twice.
6. With the door open, verify the vehicle horn is pulsing and the exterior lamps are flashing.

• If the horn is not pulsing, refer to Horns Malfunction (RPO L26/LY7) (Horns Malfunction)Horns Malfunction (RPO LS4) (Horns Malfunction).
• If the exterior lights are not flashing, refer to Turn Signal Lamps and/or Indicators Malfunction (Turn Signal Lamps and/or Indicators Malfunction).