When armed, the content theft deterrent (CTD) system is designed to deter vehicle
content theft by pulsing the horns and exterior lamps for approximately 30 seconds
when an unauthorized vehicle entry is detected. However, the CTD system does not affect
engine starting.
An unauthorized entry can be any of the following with the CTD system armed:
• | Forced entry into the passenger compartment |
• | When any door is opened without first using the key to unlock the vehicle
or receiving an UNLOCK command from a valid keyless entry transmitter. |
The components of the system are:
• | Remote control door lock receiver (RCDLR) |
• | Body control module (BCM) |
• | Power door lock switches |
Arming the CTD System
Use the following procedure in order to arm the system:
- Place the shift lever in Park (P).
- Turn OFF the ignition.
- Open any door.
Important: The system is not armed if the doors are
locked manually; the power door lock switch or remote keyless entry transmitter must
be used to arm the content theft deterrent (CTD) system.
- Lock the doors with either the power door lock switch or the LOCK button on
the transmitter. The system is in standby mode and will not begin the arming timer
until all doors are closed.
- The system will begin the arming timer immediately after the last door
is closed. This delay is shown by the theft LED indicator ON STEADY. When the indicator
transitions to OFF, the system is armed. After the theft LED indicator transitions
to OFF, the theft LED will begin to flash slowly.
Locking the Vehicle Without Arming the CTD System
Locking the vehicle may be accomplished without arming the content theft deterrent
(CTD) system. Use of the manual door locks or using the key to lock the doors will
lock the vehicle but will not arm the CTD system.
Disarming an Armed System/Silencing an Alarm
If system arming has been requested by the power door lock switch or the keyless
entry transmitter, it must be disarmed.
Important: Using the power door unlock switch or manually
unlocking the doors does not disable the content theft deterrent (CTD) arm mode. Also,
disconnecting the battery or pulling fuses does not disable the arm mode, as the body
control module (BCM) stores the CTD mode status in memory.
• | To disarm the CTD system in standby mode, perform one of the following: |
- | Press either power door unlock switch. |
- | Use the key to unlock either front door. |
- | Press the UNLOCK button on the keyless entry transmitter. |
- | Insert a valid key into the ignition and switch to the ON position. |
• | To disarm the CTD system in the armed mode: |
- | Use the key to unlock either front door. |
- | Press the UNLOCK button on the keyless entry transmitter. |
- | Insert a valid key into the ignition and switch to the ON position |
• | To disarm the CTD system when activated (alarming mode). |
- | Use the key to unlock either front door. |
- | Press the UNLOCK button on the keyless entry transmitter. |
- | Insert a valid key into the ignition and switch to the ON position. |
CTD Circuit Description
The following is a description of each component used in the content theft deterrent
(CTD) system:
Remote Control Door Lock Receiver (RCDLR)
The keyless entry system can arm and disarm the CTD system. When the remote
control door lock receiver (RCDLR) receives a door lock or unlock signal from the
transmitter, the RCDLR sends a message via serial data to the body control module
(BCM) to perform the appropriate arm/disarm functions.
Door Ajar Switches
The CTD system uses the door ajar switches in the door latch assemblies as one
method to activate the alarm. The BCM monitors all door ajar switches via a discrete
input from each door latch assembly or door jamb switch. If the BCM receives a ground
signal from any door ajar switch when the CTD system is armed, the BCM will activate
the alarm.
Body Control Module (BCM)
The CTD system is an internal function of the BCM which utilizes serial data
and various switch input information to perform CTD functions. When the BCM detects
an unauthorized entry, it activates the horns and exterior lamps. The BCM has 4 basic
modes (disarmed, standby, armed, and alarm) for operating the CTD system. The different
modes are described below.
- The BCM has the CTD system in a disarmed mode until the following conditions
are detected:
• | Ignition key turned to the OFF position. |
• | Doors locked by either the power door lock switch or the LOCK button on
the keyless entry transmitter. |
- The BCM enters the standby mode when the above conditions are detected
and a vehicle door is open. In standby mode, the BCM commands the theft LED to flash
quickly. If all the doors are closed and the LOCK button on the transmitter is used,
the BCM enters the delayed mode.
- When the last door is closed, the BCM enters the armed mode. In armed
mode, the BCM commands the theft LED to flash slowly.
- When the BCM detects a forced entry, the BCM enters the alarm mode. The
BCM activates the horns and exterior lamps for 30 seconds. This is followed
by a 3 minute time-out with the horn no longer active. If no new intrusions
are detected after the time-out, the horn is not active. The system must be disarmed
or the intrusion condition removed after the time-out for the system to exit alarm
mode.
Driver Door Key Switch
The driver door key switch is an integral part of the driver door lock cylinder
and provides a discrete input to the BCM. The BCM utilizes each this input to disarm
the CTD system. Inserting a key and turning to the UNLOCK position will disarm the
CTD system.
Power Door Lock Switches
The power door lock switches are used to either arm or disarm the CTD system.
Pressing the LOCK position will cause the CTD to arm after all doors are closed. Pressing
the UNLOCK position will disarm the CTD system only if still in stand-by mode.
Important: The CTD system can be armed with the windows
or sunroof open.
Inputs
The BCM monitors the following inputs:
• | Door lock switch - Driver and Passenger |
• | Transmitter LOCK/UNLOCK buttons, serial data message from the RCDLR |
Outputs
The BCM controls the following: