Electrical Load Management
The electrical load management is hosted in the BCM/GWM assembly using IPMS functionality and is based on BMS control module inputs. The BCM/GWM assembly will monitor the vehicle system power loads before and during an ECO engine stop.
Before an ECO engine stop, the BCM/GWM assembly will transmit a signal to the system control modules on all CAN buses to request a power save on all electrical loads and set a minimum electrical value override. The BCM/GWM assembly monitors the vehicle electrical loads and will inhibit an ECO engine stop until the load current is at a value low enough to be supported by the battery. If the electrical loads cannot be reduced sufficiently, the BCM/GWM assembly will inhibit the ECO engine stop.
When the engine is stopped after an ECO engine stop, the BCM/GWM assembly will continue to monitor the battery state of charge. If battery voltage falls below 11.0V, a level which will result in degraded starting performance or possible battery damage, the BCM/GWM assembly will initiate an engine start.