The body control system consists of the following 3 modules:
| • | The dash integration module (DIM) |
| • | The instrument panel module (IPM) |
| • | The rear integration module (RIM) |
Each of the 3 body control modules integrate a number of functional
systems under the control of a single module. Each module is connected to the class 2
serial data circuit, many of the control functions are implemented by class 2
messages.
Dash Integration Module (DIM)
The various dash integration module (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:
| • | Class 2 communication requiring DIM interaction. |
| • | Control of exterior lamps. |
| • | Control of front fog lights. |
| • | Control of the headlights. |
| • | Headlamps on with wiper input. |
| • | Hood ajar switch input w/export. |
| • | Interior lamps incandescent dimming. |
| • | Low side temperature for HVAC compressor. |
| • | Reverse lockout solenoid control. |
| • | Steering wheel controls input. |
| • | Storage of the clock settings and, sending a message out on the class 2
serial data circuit in response to requests from other modules. |
Power Mode Master
This vehicles DIM functions as the Power Mode Master (PMM). Refer to
Power Mode Description and Operation
for a complete description of power mode
functions.
Instrument Panel Integration Module (IPM)
The various instrument panel integration module (IPM) input and output circuits
are described in the corresponding areas as indicated on the IPM electrical schematics.
The IPM functions include the following:
| • | 54-volt VF display input |
| • | Ambient light sensor input |
| • | Class 2 communication requiring IPM interaction |
| • | Front HVAC air delivery controls |
| • | Front HVAC sensor inputs |
| • | Front HVAC temperature controls |
| • | Fuel door and rear compartment lid release switch input |
| • | Instrument panel lamps dimmer switch input |
| • | Ignition switch headlight control |
| • | Interior lamps switch input |
| • | Key in ignition switch input |
| • | Traction control switch input |
| • | Twilight sentinel delay input |
Rear Integration Module (RIM)
The various rear integration module (RIM) inputs and outputs are described in
the corresponding functional areas as indicated on the RIM electrical schematics.
The RIM functions include the following:
| • | Automatic level control |
| • | Class 2 communication requiring RIM interaction |
| • | Content theft deterrent |
| • | Fuel level sensor input |
| • | Park brake relay control |
| • | Rear defog relay control |
| • | Rear park assist chime control |
| • | Retained accessory power (RAP) relay control |
| • | Transmission shift inhibit |
| • | Trunk release relay control |
| • | Various controls for the interior lamps |
