Serial Data Control of Retained Accessory Power (RAP)
Retained accessory power (RAP) is a vehicle power mode that permits
the operation of selected customer convenience items after the ignition switch
is turned OFF. These selected items will remain in operation until
a passenger compartment door is opened or until the RAP function timer
reaches its shut-off limit.
The modules listed below all receive a RAP message from the dash integration
module (DIM) over the serial data circuit. The DIM module monitors the
ignition switch position, battery condition and passenger compartment
door status to determine whether RAP should be initiated. The DIM
module then sends a message to the listed modules telling them that
they are in RAP power mode. The modules then support the operation
of the systems under their control as required by their RAP power
mode strategy.
RAP will end when one of the following conditions are met:
| • | The DIM module receives an input as a serial data message from
the door modules indicating the opening of a passenger compartment door. |
| • | The DIM module receives a message from its internal timer indicating
the end of the RAP period after 10 minutes. |
| • | The DIM module detects a decrease in battery capacity below a
prescribed limit. |
| • | The transition from OFF to RUN/ON or ACC of the ignition switch. |
The DIM module then sends a serial data message to the listed modules
ending the RAP function.
The modules receiving serial data messages for RAP functions are:
| • | cellular telephone module w/UV8 |
| • | driver door module (DDM) |
| • | memory seat module (MSM) |
| • | navigation data processor w/UY4 |
| • | navigation display head w/UY4 |
| • | rear integration module (RIM) |
| • | vehicle interface unit (VIU) |
Relay Control of Retained Accessory Power (RAP)
Retained accessory power (RAP) is a vehicle power mode that permits
the operation of selected customer convenience items after the ignition switch
is turned OFF. These selected items will remain in operation until a passenger
compartment door is opened or until the RAP function timer reaches
its shut-off limit.
When the RIM is in the RAP function as described above, it closes the
RAP relay. This provides power during the RAP period for the sunroof control
module if equipped w/CF5.
The RIM opens the RAP relay to end the sunroof operation if equipped
w/CF5, when it ends the RAP function as outlined in the previous text.
