Content Theft Deterrent (CTD)

CONTENT THEFT DETERRENT (CTD) DESCRIPTION AND OPERATION

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. After the initial 30 second timer had expired, the lamps will continue to flash for an additional 90 seconds. Some export vehicles may also use a separate theft deterrent alarm as an alarm sounding device. However, the CTD System does not affect engine starting.

An unauthorized entry can be any of the following with the CTD system armed:
- When any door is opened without being first unlocked by an UNLOCK command from a keyless entry transmitter, a passive unlock from a keyless entry transmitter, or a manual unlock via the door key cylinder
- Forced entry into the rear compartment
- Forced entry into engine compartment
- Battery disconnection
- The rear integration module (RIM) receives a non-OFF power mode request without first receiving a valid engine control module (ECM) fuel continue message.

The components of the system are:
- Door modules
- Inclination sensor (RPO UA2)
- Instrument panel module (IPM)
- Intrusion sensor (RPO UA2)
- Hood ajar switch
- Rear integration module (RIM)
- Remote control door lock receiver (RCDLR)
- Theft deterrent alarm (RPO UA2)

Arming the CTD System
Use the following procedure in order to arm the system:
1. Place the shift lever in park (P).
2. Turn OFF the ignition.
3. Open and close any door.
4. Lock the doors with an active press of the vehicle door lock switch or the keyless entry transmitter LOCK button. Passive vehicle locking, if enabled, will also arm the content theft deterrent (CTD).

Disarming An Armed System/Silencing An Alarm
If system arming has been requested by the power door lock switch or the transmitter, it must be disarmed.

IMPORTANT: Using the power door unlock switch does not disable the content theft deterrent (CTD) arm mode. Also, disconnecting the battery or pulling fuses does not disable the arm mode, since the rear integration module (RIM) stores the CTD mode status in memory.

- To disarm the CTD system in the armed mode:
- Press the UNLOCK button on the keyless entry transmitter.
- Enter the vehicle passively with a correct keyless entry transmitter.
- Unlocking the vehicle using the door key cylinder
- Pressing the Off/Acc/Start button with a valid key fob within the vehicle

- To disarm the CTD System when activated (alarming mode).
- Press the UNLOCK button on the transmitter.
- Enter the vehicle passively with a correct keyless entry transmitter.
- Unlocking the vehicle using the door key cylinder
- Pressing the Off/Acc/Start button with a valid key fob within the vehicle
- Using OnStar to disable an alarm mode

CTD Circuit Description
The following is a description of each component used in the Content Theft Deterrent (CTD) System:

Door Modules
Each vehicle door has a respective door module. The door modules monitor each door ajar switch signal and communicates their status to the rear integration module (RIM) via serial data. If content theft deterrent (CTD) is in an armed state and a door ajar signal is received by the RIM from a door module, CTD will enter alarm mode.

Inclination Sensor (RPO UA2)
The inclination sensor is monitored by the RIM. The inclination sensor monitors the inclination of the vehicle. This sensor is only equipped on vehicles with RPO UA2. Instances where vehicle inclination may be seen is during unauthorized jacking up of the vehicle or towing of the vehicle. If the CTD is in the armed mode and vehicle inclination is detected, CTD will enter the alarm mode.

Instrument Panel Module (IPM)
The instrument panel module (IPM) is used by the CTD to control light and horn pulsing during the alarm mode. When CTD is in alarm mode, the RIM sends a serial data message to the IPM to pulse the lights and horn. Though the IPM is lighting master, it only physically controls the front vehicle lighting. When an alarm mode is received by the IPM, the IPM will send a serial data message to the RIM, which physically controls the rear vehicle lighting, to pulse the rear lamps.

Intrusion Sensor (RPO UA2)
The intrusion sensor is monitored by the RIM. The intrusion sensor is a shock sensor which monitors forceful entry or movement within the vehicle. This sensor is only equipped on vehicles with RPO UA2. If the CTD is in the armed mode and vehicle intrusion is detected, CTD will enter the alarm mode.

Hood Ajar Switch
The hood ajar switch is used to monitor unauthorized entry into the vehicles underhood area. The RIM monitors the hood ajar switch when in the armed mode. If the hood is seen to be ajar when the CTD is in the armed mode, CTD will enter the alarm mode.

Rear Integration Module (RIM)
The CTD System is an internal function of the RIM which utilizes serial data and various switch inputs information to perform CTD functions. When the RIM detects an unauthorized entry, it will activate the horns, exterior lamps, and on some export vehicle, the theft deterrent alarm. The RIM has basic modes, disarmed, armed, and alarm, for operating the CTD System. The different modes are described below.

- The CTD state remains disarmed until the following conditions are met:
- Ignition in the OFF position
- All vehicle doors and decklid are closed
- A lock input is received
- The CTD enters the armed state when the above conditions are met. The lock input may be received either from the keyless entry system via the RCDLR, or from the vehicle door lock switch. In the case of a door lock switch being pressed while a vehicle door is open, the CTD will be armed once all vehicle doors are closed. The security indicator is illuminated solid at this time. The vehicle contents are now secure.
- If vehicle intrusion is detected, the RIM will put CTD into the alarm state. In this state, the IPM pulses the horn and exterior lamps. If an export vehicle is equipped with a theft deterrent alarm, the theft deterrent alarm will also sound. The CTD will enter alarm mode if one of the following inputs is received:
- A door ajar signal
- A decklid ajar signal
- An intrusion sensor alarm on signal (RPO UA2 only)
- An inclination sensor alarm on signal (RPO UA2 only)
- A hood ajar signal

Remote Control Door Lock Receiver (RCDLR)
The keyless entry system is an internal function of the remote control door lock receiver (RCDLR). The RCDLR system can arm and disarm the Content Theft Deterrent (CTD) System. When the RCDLR receives a door lock or unlock signal from the transmitter, the remote keyless entry (RKE) module sends a class 2 message to the RIM in order to perform the appropriate arm/disarm function.

Theft Deterrent Alarm (Some Export Vehicles)
The theft deterrent alarm is a theft deterrent sounder used on some export vehicles. If the CTD System is in the alarm mode, the RIM will request the theft deterrent alarm ON.

Inputs
The rear integration module (RIM) monitors the following inputs:
- Door ajar switches, a serial data message from the door module
- Power door lock/unlock switches, a serial data message from the door module
- Hood ajar switch
- Inclination sensor (RPO UA2)
- Intrusion sensor (RPO UA2)
- Passive vehicle locking, a serial data message from the remote control door lock receiver (RCDLR)
- Transmitter LOCK/UNLOCK buttons, a serial data message from the RCDLR
- Rear compartment lid ajar switch

Outputs
The rear integration module (RIM) controls the following outputs:

The theft deterrent alarm siren