For 1990-2009 cars

### 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;

• | Battery Disconnected;

• | 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 system consists of the following components:

• | Door Module

• | Instrument Panel Module (IPM)

• | Hood Ajar Switch

• | Rear Integration Module (RIM)

• | Remote Control Door Lock Receiver (RCDLR)

### CTD System Enable

Use the following procedures to enable the system:

1. Place the shift control lever in the park position (P).
2. Turn OFF the ignition switch.
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 the Enabled System/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, perform one of the following:

• | Press the UNLOCK button on the keyless entry transmitter .

- | Press the UNLOCK button on the remote keyless entry transmitter.

- | Enter the vehicle passively with a correct keyless entry transmitter.

- | Use the door key cylinder to open the door.

- | Press 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 remote keyless entry transmitter.

- | Enter the vehicle passively with a correct keyless entry transmitter.

- | Use the door key cylinder to open the door.

- | Pressing the Off/Acc/Start button with a valid key fob within the vehicle.

### CTD Circuit/System Description

The following is a description of each component used in the content theft deterrent (CTD) system:

#### Door Module

Each vehicle door has its own door mode. The door modules monitor each door ajar switch signal and communicate 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.

#### Instrument Panel Module (IPM)

Use the IPM to control lights and horn pulses when the CTD system is in 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 controls lighting, 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.

#### Hood Ajar Switch

The RCDLR receives input from the keyless entry transmitter, transferring information to the RIM via serial data. The RIM uses this information along with other information for activation and deactivation of the CTD system.

#### 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. Various modes are described in the following.

• | The CTD state remains disarmed until the following conditions are met:

- | Place the ignition switch in OFF position.

- | All doors and the trunk lid are closed.

- | The 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. At this point the security indicator is always on. Now the contents in the vehicle will be protected safely.

• | If vehicle intrusion is detected, the RIM will put CTD into the alarm state. In this state, the IPM sounds the horns and flashes the exterior lighting 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:

- | Door Ajar Signal

- | Trunk Lid Ajar Signal

- | Intrusion Sensor Alarm On Signal (RPO UA2 only)

- | Tilt Sensor Alarm On Signal (RPO UA2 only)

- | Hood Ajar Signal

#### Remote Control Door Lock Receiver (RCDLR)

The keyless entry system is an internal function of the 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.

#### Input Signal

The 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

• | 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

• | Trunk Lid Ajar Switch

#### Output Signal

The RIM controls the following outputs:

Antitheft Alarm