DIM Wake-Up/Sleep States

The Dash Integration Module (DIM) is able to control or perform all of the DIM functions in the wake-up state. The DIM enters the sleep state when active control or monitoring of system functions has stopped, and the DIM has become idle again. The DIM must detect a wake-up input from activity on the serial data line from detection of a battery disconnect and reconnect condition, door ajar switch open condition, headlights turned on, hood ajar switch open condition, ignition is turned on, key is inserted in ignition switch or parking lights are turned on.

Before entering the wake-up state. The DIM monitors for these inputs during the sleep state, where the DIM is able to detect switch transitions that cause the DIM to wake-up when activated or deactivated. Multiple switch inputs are needed in order to sense both the insertion of the ignition key and the power mode requested. This would allow the DIM to enter a sleep state when the key in ignition switch. Dim will enter a low power or sleep state and send an OFF-ASLEEP message to the other systems on the serial data line when ignition is off, no activity exists on the class 2 serial data line, no outputs are commanded, no delay timers are actively counting and no wake-up inputs are present.