Startup Battery And Cables (G2319497): Operation: Notes

The startup battery state of charge is monitored by the Body Control Module/Gateway Module (BCM/GWM) with the Battery Monitoring System (BMS) control module. In Power Mode 7 (engine running) the startup battery state of charge is maintained by the Direct Current to Direct Current (DC/DC) converter. The BCM/GWM communicates with the DC/DC converter through the High Speed (HS) Controller Area Network (CAN) power mode zero systems bus.

For additional information, Refer to: DIRECT CURRENT TO DIRECT CURRENT CONVERTER

The power from the startup battery and the DC/DC converter is distributed to all the vehicle 12V systems from the Battery Junction Box (BJB).