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 module continuously monitors its 14-volt circuit during charge or jump assist. This DTC sets when the 14-volt circuit in the accessory DC power module drops below a set level. Accessory DC power 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.