The content theft deterrent (CTD) system, when armed, 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 being unlocked by using the key to unlock
either of the front doors or the UNLOCK command from a keyless entry transmitter |
The components of the system are:
• | Remote Control Door Lock Receiver (RCDLR) |
• | The body control module (BCM) |
• | Front Door Lock Cylinder Switches |
• | Power Door Lock Switches |
Arming the CTD System
Use the following procedure in order to arm the system:
- Place the shift lever in P (park).
- 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 keyless entry transmitter must be used to arm the CTD system.
- Lock the doors with the power door lock switch or the LOCK button on the transmitter.
The system is in standby mode and will not start the arming timer until
all doors are closed.
- The system will arm approximately 30 seconds from the time that 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 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 RCDLR,
it must be disarmed.
Important: Using the power door unlock switch or manually unlocking the doors does not
disable the CTD arm mode. Also, disconnecting the battery or pulling
fuses does not disable the arm mode, since the BCM stores the CTD mode
status in memory.
• | To disarm the CTD system in standby mode (theft LED flashing and door(s)
open), 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. |
• | To disarm the CTD system in the armed mode: |
- | Use the key to unlock the either front door. |
- | Press the UNLOCK button on the keyless entry transmitter. |
• | 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. |
CTD Circuit Description
The following is a description of each component used in the 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 the RFA link to the BCM in
order 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 body control module (BCM) monitors
all door ajar switches via a discrete input from each door ajar switch.
If the BCM receives a ground signal from a door ajar switch when the CTD
system is armed, the BCM activates the alarm.
Body Control Module (BCM)
The CTD system is an internal function of the body control module (BCM) which
utilizes 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 5 basic modes (disarmed, standby, delayed, 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 transmitter |
- The BCM enters the standby mode when the above conditions are detected.
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 delayed mode for 30
seconds. In delayed mode the BCM commands the theft LED to illuminate ON steady.
- After 30 seconds, the BCM enters the armed mode. In armed mode, the
BCM commands the theft LED to flash slowly. Any forced entry activates the alarm
mode.
- 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.
Front Door Lock Cylinder Switches
The door lock cylinder switches located in the driver and passenger doors
are a discrete input to the BCM. The BCM utilizes each of these inputs 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 and the 30 second delay period has elapsed. Pressing the unlock
position will disarm the CTD system only when in the STANDBY mode.
Shock Sensor
The shock sensor sensitivity has been set to comply with various local regulations
requiring vehicle contact to set off the alarm. It can be adjusted if more or less
sensitivity is desired. If sensitivity is increased too much, it may give false
alarms caused by gusts of wind or other natural events that may shake the vehicle.
To adjust, remove the label covering the adjustment knob and adjust as desired.
Turn clockwise to increase sensitivity. Turn counterclockwise to decrease sensitivity.
Different levels of shock are required on the various body panels and windows to
activate the sensor, depending on the material (plastic, steel or glass) and distance
from the shock sensor.
Important
The CTD system can be armed with the windows or sunroof open.
Inputs
The BCM monitors the following inputs:
• | Driver and passenger door ajar switches |
• | Driver and passenger power door lock/unlock switches |
• | Front door lock cylinder disarm switches |
• | Transmitter LOCK/UNLOCK buttons, message from the remote control door
lock receiver (RCDLR) via the RFA link. |
Outputs
The BCM controls the following :