Content Theft Deterrent (CTD) Alarm Mode Inoperative (With RPO UA2)

Content Theft Deterrent (CTD) Alarm Mode Inoperative (With RPO UA2)

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

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 Trunk ajar switch, the BCM determines whether a CTD alarm is warranted. If unauthorized access is being detected, the BCM will pulse the vehicle horn, flash the turn signals, and sound the theft deterrent alarm as a means of theft deterrent.

Circuit/System Testing

1. Ignition ON, while opening and closing each vehicle door, verify that the applicable scan tool door ajar switch parameter cycles between Door Closed and Door Ajar.

• If the scan tool parameter does not cycle between the specified values, refer to Door Ajar Indicator Malfunction. Door Ajar Indicator Malfunction

2. Ignition ON, while opening and closing the rear compartment lid open, verify the TRUNK AJAR switch parameter cycles between TRUNK AJAR and TRUNK CLOSED.

• If the scan tool parameter does not cycle between the specified values, refer to Trunk Release Inoperative (Convertible) Trunk Release Inoperative (Coupe).

3. Ignition OFF, disconnect the harness connector at the Hood Ajar Switch.
4. Test for less then 1 ohm of resistance between the ground circuit terminal B and ground

• If greater than the specified range, test the ground circuit for an open/high resistance.

5. Ignition ON, verify a test lamp between the signal circuit terminal A and ground.

• If the test lamp does not illuminate, test the signal circuit for a short to voltage or an open/high resistance. If circuit tests normal, replace the BCM.

6. Test for infinite resistance between terminal A and terminal B of the hood ajar switch.

• If not the specified value replace the switch.

7. Reconnect the harness connector at the hood ajar switch.
8. 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 to Keyless Entry System Inoperative (Passive) Keyless Entry System Inoperative (Active). Keyless Entry System Inoperative (Passive) Keyless Entry System Inoperative (Active)

9. Ignition OFF, observe the intrusion sensor message display on the DIC. The message should switch between INTRUSION SENSOR ON and INTRUSION SENSOR OFF when arming and disarming.

• If not the specified value, refer to Intrusion Sensor Inoperative. Intrusion Sensor Inoperative

10. Completely lower the driver door window.
11. Ignition OFF, arm the CTD system using the keyless entry system by pressing the transmitter LOCK button twice.
12. Without disarming the system, reach in through the open driver window, unlock and open the driver door. Verify the scan tool Content Theft Mode parameter displays Pre Alarm or Alarm.

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

13. With the door open, verify the vehicle horn is pulsing and the turn signal lamps are flashing.

• If the horn is not pulsing, refer to Horns Inoperative. Horns Inoperative
• If the turn signal lamps are not flashing, refer to Turn Signal Lamps and/or Indicators Malfunction. Turn Signal Lamps and/or Indicators Malfunction

Repair Instructions

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

Refer to Programming and Relearning.Programming and Relearning