Standard Starting System
WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
These components form two separate circuits. A high amperage circuit that feeds the starter motor up to 300+ amps, and a control circuit that operates on less than 30 amps.
The PCM controls a double start over-ride safety that does not allow the starter to be engaged if the engine is already running.