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 five 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 :