Circuit/System Description
WARNING: This page is about a different car, the 2015 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.
As a means of checking microprocessor integrity, the Starter/Generator Control Module calculates and compares voltage at various locations within itself. The Starter/Generator Control Module calculates three separate voltage values, representing voltage measured at different locations within the Hybrid/EV Battery Pack. The Starter/Generator Control Module preforms these calculations at different locations within the microprocessor. As an indicator of microprocessor integrity, the voltage calculations should all be the same.