Circuit/System Description
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
The accessory DC power control module monitors its 14-volt circuit when it is enabled for charge or jump assist. It requires a minimum voltage on this circuit in order to begin operation. This DTC sets when the 14-volt circuit in the accessory DC power control module is below this minimum level at the time it is enabled. Accessory DC power control module functions will run only when an accessory dc power module enable message from the hybrid powertrain control module is active on the serial data circuit.