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 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 theft deterent 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 1-2 Shift Solenoid (SS) Valve (MN5)

Description and Operation

Theft Systems Description and Operation Theft Systems

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 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 liftgate while observing the rear access indicator/message. The indicator/message should accurately transition between the rear access open and rear access closed state when the trunk is opened and closed.

• If the rear access indicator/message does not properly transition when the liftgate is opened and closed, refer to Liftgate Ajar Indicator Malfunction Liftgate Ajar Indicator Malfunction.

3. Completely lower the driver door window and close all vehicle doors.

4. Ignition OFF, arm the theft deterent system using the keyless entry system by pressing the transmitter LOCK button twice. Verify the scan tool CTD Status parameter displays Armed.

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

5. 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 not the specified value, replace the BCM.

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 Horns Malfunction.

• If the exterior lights are not flashing, refer to Headlamps Malfunction Headlamps Malfunction.

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