DeVille DHS V8-4.6L VIN Y (2000)
Body Control Module: Description and Operation
System Operation
General Information
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
^
Foglight switch inputs
^
I/P dimmer switch input
^
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
^
Heated seat controls
^
HVAC blower control
^
Rear defogger control
^
Park brake relay controls
^
Various controls for the interior lamps
^
Reverse control for the backup lamps and automatic day/night mirror
^
Rear foglights control
^
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
^
Content theft alarm
