The body control module (BCM) monitors the ignition position, battery condition, and each door ajar/open switch status to determine whether the retained accessory power should be initiated or terminated. Retained accessory power is controlled by two different methods; retained accessory power relay coil control circuit and serial data. Some modules receive a retained accessory power message from the BCM over the serial data circuits. Serial data controlled retained accessory power is deactivated as required by their modules retained accessory power mode operation. Other subsystems are activated directly by the BCM or by the BCM through a relay. Components and systems that are active in retained accessory power are also activated anytime the ignition is any position other than OFF regardless of the door switch signals.

The BCM keeps the device or relay energized during all power modes, except Off-Awake and Crank. The device or relay is also energized for approximately 10 min after shutting the ignition OFF providing no door is opened.

Relay controlled retained accessory power will end when one of the following conditions is met:

• The BCM receives an input from any door ajar or open switch indicating the opening of any door after the ignition key is out of the ignition.

Note: If the BCM is receiving any door ajar or open signal from those switches when the ignition key is turned OFF, retained accessory power will not initiate.

• The BCM internal timer for the retained accessory power expires after approximately 10 min.
• The BCM detects a decrease in battery capacity below a prescribed limit.

Systems powered by the retained accessory power relay coil control circuit during the retained accessory power mode are as follows:

Note: The vehicle may not be equipped with all components as listed below.

• Accessory Power Receptacle
• Transmission Shift Lever Position Indicator (w/floor mounted console gear shift)

Retained accessory power systems controlled by serial data are as follows:

Radio retained accessory power activation/termination is the same as relay operation with one exception; the only door switch that will turn off the radio during retained accessory power is the driver door open switch.

VCIM RAP activation/termination is the same as radio operation with 1 exception; if there is an active call when the ignition key is turned off the VCIM will remain in RAP mode, and keep the radio in RAP mode until the call is terminated.

The keyless entry control module controls components in the same manner as BCM relay controlled retained accessory power with one exception; interruptible retained accessory power is deactivated during transmitter authentication. The keyless entry control module will deactivate components that may cause radio frequency (RF) interference when the ignition mode switch is pressed which may result in “NO REMOTE DETECTED” displayed on the driver information center.

Systems powered by the interruptible retained accessory power relay coil control circuit during the retained accessory power mode are as follows:

Note: The vehicle may not be equipped with all components as listed below.

• Mobile Device Wireless Charger Module
• USB Receptacle