Dash Integration Module (DIM)

Dash Integration Module (DIM) functions include:

• A/C refrigerant low temperature sensor signal
• Air conditioning orifice solenoid control
• Instrument illumination control
• Control of headlights and exterior lights
• Control power control
• Daytime Running Lights (DRL) relay control
• Flash to pass signal
• Headlights on w/wipers signal
• Headlights switch signal
• Horn relay control
• Interior lights dimming
• Power moding control over Class 2 serial data line
• Reverse lockout solenoid control
• Storage of clock settings and sending a class 2 message in response to requests from other modules
• Steering wheel controls

DIM is able to control or perform all DIM functions in wake-up state. DIM enters sleep state when active control or monitoring of system functions has stopped and DIM has become idle again. DIM must detect certain wake-up inputs before entering wake-up state. DIM monitors for these inputs during sleep state, where DIM is able to detect switch transitions that cause DIM to wake-up when activated or deactivated. Multiple switch inputs are needed to sense both insertion of ignition key and power mode requested. This allows DIM to enter a sleep state when key is IN or OUT of ignition. DIM will enter a wake-up state if any wake-up inputs are detected:

• Activity on serial data line
• Detection of a battery disconnect and reconnect
• Headlights are on
• Ignition is turned to RUN position
• Key-in-ignition switch
• Park lights are on

DIM will enter a sleep state when all conditions exist:

• Ignition switch is in OFF position
• No activity exists on serial data line
• No outputs are commanded
• No delay timers are actively counting
• No wake-up inputs are present

If all conditions are met, DIM will enter a low power/sleep condition. This condition indicates DIM, which is PMM of vehicle, has sent an OFF-ASLEEP message to all systems on serial data link.