Content Theft Deterrent (CTD) System
The theft deterrent system on this vehicle is comprised of 2 separate systems. The systems are the PASSLOCK system and the content theft deterrent (CTD) system. These systems are described and diagnosed separately within this section. The CTD system provides the theft deterrent by sounding the horn and flashing the daytime running lights when there is an unauthorized vehicle entry or there is tampering detected.
Body Control Module (BCM)
The body control module (BCM) monitors several inputs in order to arm and disarm the CTD system. The BCM controls the alarm function outputs. When the BCM detects an unauthorized entry (any door or the trunk lid opened), the BCM applies ground to the horn and the DRL relays. The BCM will send messages to the security indicator in the instrument cluster through the class 2 serial data link. The BCM has the following modes for operating the CTD system. The more detailed descriptions are below.
| • | Disarmed state |
| • | Ready-to-arm |
| • | Arm initiated state |
| • | Arm delay state |
| • | Armed state |
| • | Pre-alarm state |
| • | Alarm state |
| • | Tampered state |
The BCM has the following discrete inputs in order to monitor the CTD system:
| • | Ignition 1 |
| • | Driver door jamb switch |
| • | Passenger door jamb switch(es) |
| • | The rear compartment lamp switch |
Door Jamb Switches
The theft deterrent system uses the door jamb switches as a method to activate the alarm. If the BCM detects any door opening before the BCM receives a disarm input, the alarm mode activates.
Keyless Entry System
The BCM is also the receiver for the keyless entry system. When the BCM receives a door lock or an unlock signal from the keyless entry transmitter, the BCM performs one of the following functions:
| • | Locks the doors and enters the arm initiated state |
| • | Unlocks the doors and enters the ready-to-arm state |
Disarmed State
The CTD system will be in the disarmed state when the ignition switch is in the LOCK (off) position and all of the doors are closed. The BCM will request the security indicator to remain off.
Ready -- To -- Arm State
The CTD system will be in the ready -- to -- arm state when the ignition switch is in the LOCK (off) position and any of the doors open. The BCM will request the security indicator to remain off.
Arm Initiated State
The CTD system will be in the arm initiated state when the ignition switch is in the LOCK (off) position, any of the doors remain open, and the BCM detects a lock command from the keyless entry transmitter. The BCM will request the security indicator to remain off.
Arm Delay State
The CTD system will enter the arm delay state when the ignition switch is in the LOCK (off) position, the BCM receives a lock command from the keyless entry transmitter, and all of the doors are closed. The CTD system will also enter this state from the arm initiated state when all of the doors are closed. If the trunk or any of the doors are opened within 10 seconds, the vehicle will reenter the arm initiated state. During this time period, the BCM will request the security indicator to flash.Otherwise the vehicle will enter the armed state in 10 seconds.
Armed State
The CTD system will enter the armed state after the 10 second delay of the arm delay state, unless the BCM detects any door or the trunk lid opening within that time. The BCM monitors the inputs (listed above) in order to determine whether to activate the alarm or to disarm the system. The BCM will request the security indicator to flash slowly.
Pre-Alarm State
If any of the doors or the trunk lid are opened without a valid unlock signal from the keyless entry transmitter, the CTD system will enter the pre-alarm state for 10 seconds. The BCM will request the security indicator to remain on and the horn to chirp for those 10 seconds. The BCM will then request the security indicator to flash slowly. Pressing any of the keyless entry transmitter buttons or starting the vehicle with a valid PASSLOCK key within that 10 second time period will disarm the CTD alarm.
Alarm State
The CTD system will enter the alarm state from the pre--alarm state after the 10 second timer expires. The horn, the interior lamps, and the daytime running lights (DRLs) will alternate off and on for approximately two minutes or until any valid transmitter signal or a valid PASSLOCK data signal is received by the BCM. The BCM will request the security indicator to flash slowly.
Tampered State
After the two minute alarm state the vehicle will enter a standby mode if either the door(s) or the trunk lid remains open. If the door(s) or trunk lid is closed anytime after an alarm, the vehicle enters the tampered state. The CTD will continue to monitor the door and trunk inputs after an initial 60 second delay. A re-entry into the vehicle without properly disarming the vehicle will enable the alarm for 30 seconds without a pre-alarm warning. The CTD system will change from the alarm state to the off state if any of the transmitter buttons are pressed. The vehicle can only be entered by the transmitter unlock function. A door lock key will not disable the alarm. The BCM will request the security indicator to flash slowly.
Remote Panic Alarm/Vehicle Locator State
The CTD system will enter the remote panic alarm/vehicle locator state when the panic button on the key fob is pressed. When the panic button is pressed, the BCM sounds the horns and flashes the headlamps. The remote panic alarm/vehicle locator state can by disabled by pressing the panic button on the transmitter again or the system will time out after 30 seconds.
