Circuit/System Description

The accessory wake up serial data 2 circuit is energized by the hybrid powertrain control module 2 to immediately activate the battery charger connected to this circuit when the body control module signals the hybrid powertrain control module 2 that serial data is required. The battery charger monitors the accessory wake up serial data 2 circuit along with the propulsion system active status serial data message. The propulsion system active status message should not be active when the accessory wake up serial data 2 circuit is not high. This DTC is set when the accessory wake up serial data 2 circuit is not high when the propulsion system active signal status is active.