Pinpoint Test G: The Ignition Key Cannot Be Removed from the Ignition Cylinder or the Ignition Key Can Be Removed from the Ignition Cylinder Regardless of Gear Selector Position: Notes
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Refer to appropriate SYSTEM WIRING DIAGRAMS article, Power Distribution/SJB for schematic and connector information.