Content Theft Deterrent Malfunction

Content Theft Deterrent Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.

Circuit/System Description

The content theft deterrent 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 rear compartment ajar switch, and the hood ajar switch, the BCM determines whether a content theft deterrent alarm is warranted. If unauthorized access is being detected, the BCM will pulse the vehicle horn and flash the exterior lamps as a means of theft deterrence.

Diagnostic Aids

The scan tool BCM Content Theft Deterrent Trigger History 1, 2, and 3 parameters can be used to help isolate an intermittent unwanted content theft deterrent alarm. These parameters are a rolling history of the previous three causes of a theft deterrent alarm. If all three parameters are indicating the same alarm trigger, the indicated input should be the starting point when diagnosing an intermittent concern.

Reference Information
Schematic Reference

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

Component Connector End Views (Connector End Views By Name)
Description and Operation

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

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

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, hood, and rear compartment while observing their respective ajar indicator/message. The indicator/message should accurately transition between the ajar and closed state when each access is opened and closed.

• If the indicator/message does not properly transition when each access is opened and closed, refer to the appropriate symptom diagnostic below:

* Door Ajar Indicator Malfunction (Door Ajar Indicator Malfunction)
* Trunk Ajar Indicator Malfunction (Trunk Ajar Indicator Malfunction)

2. Completely lower the driver door window and close all vehicle doors.
3. Ignition OFF, arm the content theft deterrent system by locking the door with the keyless entry transmitter. Verify the scan tool BCM Content Theft Deterrent Alarm Status parameter is Armed.

• If not the specified value, refer to Keyless Entry System Malfunction (Keyless Entry System Malfunction).

4. Without disarming the system, reach in through the open driver window and open the driver door. Verify the scan tool BCM Content Theft Deterrent Alarm Status parameter is Alarm.

• If not the specified value, replace the K9 body control module.

Repair Instructions

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

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