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 any 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 circuits. The DIM monitors the ignition switch
position, battery condition and passenger compartment door status to determine whether
RAP should be initiated. 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 receives an input as a serial data message from any door module
indicating the opening of a passenger compartment door. |
| • | The DIM receives a message from its internal timer indicating the end
of the RAP period after 10 minutes. |
| • | The DIM detects a decrease in battery capacity below a prescribed limit. |
| • | The transition from OFF to RUN/ON or ACC of the ignition switch. |
The modules that participate in RAP power mode are:
| • | The digital radio receiver (DRR) |
| • | The driver door module (DDM) |
| • | The front passenger door module (FPDM) |
| • | The left rear door module (LRDM) |
| • | The radio antenna module |
| • | The rear integration module (RIM) |
| • | The right rear door module (RRDM) |
| • | The vehicle communication Interface module (VCIM) |
