Retained Accessory Power (RAP) Power Mode
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 limit.
The body control module (BCM) turns OFF the RAP function and de-energizes the
RAP relay when one of the following conditions are met:
| • | The BCM senses the opening of any door. |
| • | The ignition switch transitions from OFF to ON. |
| • | The BCM receives a message from its internal timer indicating the end
of the RAP period after 10 minutes. |
| • | The BCM detects a decrease in battery capacity below a prescribed limit. |
The BCM monitors the ignition switch position, battery condition, and passenger
compartment door status to determine whether RAP should be initiated. If the ignition
switch transitions from ON to OFF, the battery voltage is within the acceptable range
and the passenger compartment doors are closed, the body control module energizes
the RAP relay. This provides power for the following:
| • | Driver information center (DIC) |
| • | Power window control switches |
| • | Rear seat audio (RSA) controller |
