Wake-Up/Asleep States

Wake-Ups are signals that will turn the IPC ON and cause it to begin active control and/or monitoring. The IPC is asleep when it has stopped control or monitoring and has become idle again. The IPC has the ability to detect wake-up inputs when in the sleep state. Wake-ups input monitoring is needed to allow the IPC determine when to wake-up and begin active monitoring and control of vehicle functions. The IPC will enter a wake-up state under any of the following conditions:
^ Any activity on the serial data line
^ Headlamp switch ON.
^ Courtesy lamps ON.
^ Power mode message received from the Body Control Module (BCM)
^ Battery was disconnected then reconnected
^ Ignition is turned ON

The IPC has a low power or sleep state. This state is intended to reduce parasitic load during a period when no control functions are needed. The IPC will enter a sleep state when all the following conditions are met:
^ No Activity on the serial data line for approximately 10 seconds.
^ Ignition switch is in the OFF position
^ Headlamps are OFF
^ Courtesy lamps OFF
^ Power mode message was not received from the BCM
^ SECURITY indicator is OFF

If all these conditions are met the IPC will enter a low power or sleep condition. However, the IPC will still be able to monitor wake-up inputs and as well as any activity on the serial data line to determine when to enter a wake-up state.