Each of the three body control modules integrate a number
of functional systems under the control of a single module. Each of the modules
is connected to the Class 2 serial data line; many control signals are
implemented by Class 2 messages.
Dash Integration Module (DIM)
The DIM functions include the following:
| • | Power moding control (ignition switch states) over Class 2 serial
data line |
| • | Control of headlights, front foglights and exterior lamps |
| • | Interior lamps incandescent dimming |
| • | Steering wheel controls |
| • | Horn relay control for theft activation |
| • | Lamps On signal with wiper/washer |
| • | Low side temperature for HVAC compressor |
| • | Hood ajar switch input (export) |
Instrument Panel Integration Module (IPM)
The IPM functions include the following:
| • | Front HVAC air delivery and temperature controls |
| • | Ambient light sensor input and twilight delay input for headlights
control |
| • | Traction control switch input |
| • | Interior lamps switch input |
| • | Key in ignition switch input from the ignition switch |
| • | Fuel door and rear compartment lid release switch input |
| • | Ignition switch Headlight control |
Rear Integration Module (RIM)
The RIM functions include the following:
| • | Fuel level sensor input |
| • | Park brake relay controls |
| • | Various controls for the interior lamps |
| • | Reverse control for the backup lamps and automatic day/night mirror |
| • | Fuel door and rear compartment lid release controls |
| • | Retained Accessory Power (RAP) control for the sunroof control
module |
| • | Ajar switch and tamper switch inputs from the rear compartment
lid |
