CTD System Components
Door Jamb Switches
The CTD system uses the door jamb switches in the door lock assembly
as one method to activate the alarm. The Driver Door Module (DDM) monitors
all door jamb switches via a class 2 input from the other door modules.
If the rear integration module (RIM) receives a class 2 message from the
DDM that a door is open and the CTD system is armed, RIM activates the
alarm.
Hood Ajar Switch (export)
When the hood is opened the switch closes. When the RIM detects the
hood ajar switch in a closed condition and the CTD system is armed, the RIM
activates the alarm.
Rear Compartment Tamper Switch
The rear compartment lid is equipped with a lock cylinder tamper switch.
Any rotation or in/out movements caused by a forced entry, result in the switch
closing. When the RIM detects the rear compartment tamper switch in a closed
condition and the CTD system is armed, the RIM activates the alarm.
Remote Function Actuator (RFA) Module
The RFA system can arm and disarm the CTD system. When the RFA module
receives a door lock or unlock signal from the transmitter, the RFA module
sends a class 2 message to the RIM to perform the appropriate arm/disarm
functions.
Rear Integration Module (RIM)
The CTD system is an internal function of the Rear Integration Module
(RIM) which utilizes class 2 serial data and various switch input information
to perform CTD functions. When the RIM detects an unauthorized entry
it commands the Dash Integration Module (DIM) to activate the horns and
exterior lamps via the class 2 serial data line. The RIM has five basic
modes (disarmed, standby, delayed, armed, and alarm) for operating the CTD
system. The different modes are described below.
- The RIM has the CTD system in a disarmed mode until the following
conditions are detected:
• | The ignition key turned to the OFF position. |
• | The doors are locked by either the power door lock switch or the
LOCK button on the transmitter. |
- The RIM enters the standby mode when the above conditions are
detected. In standby mode the RIM commands the instrument cluster to flash
the SECURITY indicator via the class 2 serial data line. (If all the
doors are closed and the LOCK button on the transmitter is used, the
RIM enters the delayed mode (step 3).
- When the last door, rear compartment lid, or hood (export) is
closed, the RIM enters the delayed mode for 30 seconds. In delayed mode the
RIM commands the instrument cluster to illuminate (stop flashing) the
SECURITY indicator via the class 2 serial data line.
- After 30 seconds, the RIM enters the armed mode. In armed mode
the RIM commands the instrument cluster to turn off the SECURITY indicator
via the class 2 serial data line. Any forced entry activates the alarm
mode.
- When the RIM detects a forced entry, the RIM enters the alarm
mode. The RIM commands the DIM to activate the horn and exterior lamps for
30 seconds, via a class 2 message. This is followed by a three 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.
Important: The CTD system can be armed with the windows or sunroof open.
Inputs
The RIM monitors the following inputs:
• | Driver and passenger door ajar switches, class 2 message from
the Drive Door Module |
• | Driver and passenger power door lock/unlock switches, class 2
message from the Driver Door Module |
• | Driver door lock cylinder switch, class 2 message from the Driver
Door Module |
• | Hood ajar switch (export only), class 2 message from the DIM |
• | Rear compartment tamper switch, circuit 305 (BLK) |
• | Transmitter LOCK/UNLOCK buttons, class 2 message from the (RFA) |
Outputs
The RIM commands the DIM to control the following via a class 2 message: