Dash Integration Module (DIM)

DASH INTEGRATION MODULE (DIM)
The DIM is wired to the class 2 serial data line. The various DIM input and output circuits are described in the corresponding functional areas as indicated on the DIM electrical schematics.
The DIM functions include the following:
- Control of headlights and exterior lamps
- Horn relay control
- Interior lamps incandescent dimming
- Lamps On signal with wiper/washer
- Power moding control over Class 2 serial data line
- Steering wheel controls
- Storage of the clock settings and, sending a message out on the class 2 serial data circuit in response to requests from other modules

The dash integration module (DIM) controls the exterior lighting and the horn activation. When the RIM detects an unauthorized entry, the RIM sends a message via the serial data circuit to the DIM to activate the horns and exterior lamps. The DIM then grounds the appropriate relays to control the exterior lighting and horns.

INSTRUMENT PANEL INTEGRATION MODULE (IPM)
The IPM is wired to the class 2 serial data line. The various IPM input and output circuits are described in the corresponding functional areas as indicated on the IPM electrical schematics.
The IPM functions include the following:
- The ambient light sensor input and twilight delay input for headlamp control.
- The front HVAC air delivery and temperature control.
- The IP dimmer switch input.
- The ignition switch headlamp control.
- The interior lamps switch input.
- The key-in-ignition switch input from the ignition switch.
- The rear compartment lid release switch input.
- The traction control switch input.

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, the RIM sends a message via the serial data circuit to the DIM to activate the horns and exterior lamps. The RIM has 5 basic modes. Disarmed, standby, delayed, armed, and alarm for operating the CTD system. The 5 modes transition from one step to the next in the following order:

1. When in the disarmed mode, ignition is OFF and any door is open the RIM commands the instrument cluster to flash the SECURITY indicator via the class 2 serial data circuit. The RIM has the CTD system in a disarmed mode until the following conditions are detected:
- Ignition key turned to the OFF position
- Any door open
- Doors locked by either the power door lock switch or the LOCK button on the keyless entry transmitter
2. The RIM enters the standby mode when the above conditions are detected. In standby mode the RIM commands the instrument cluster to illuminate the SECURITY indicator via the class 2 serial data circuit. If all the doors are closed and the LOCK button on the keyless entry transmitter is used, the RIM enters the delayed mode.
3. When the last door is closed, the RIM enters the delayed mode for 30 seconds. In delayed mode the RIM commands the instrument cluster to illuminate the SECURITY indicator on steady via the class 2 serial data circuit.
4. 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 circuit. Any forced entry activates the alarm mode.

IMPORTANT: The CTD system can be armed with the windows or sunroof open.

5. 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 serial data circuit. This is followed by a 3 minute time-out of the horns, during the time-out period the horns are no longer active. If a new intrusion is detected during 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.

The RIM is wired to the class 2 serial data line. The various RIM input and output circuits are described in the corresponding functional areas as indicated on the RIM electrical schematics.
The RIM functions include the following:
- The ajar switch and tamper switch inputs from the rear compartment lid
- The automatic level control
- The cigar lighter relay control
- The fuel door lock and release control
- The heated seat controls
- The park brake relay control
- The rear compartment lid release controls
- The rear defogger relay control
- The retained accessory power (RAP) relay control
- The reverse lamp relay control
- The various controls for the interior lamps