Circuit CDC15 (VT) (GEN MON)
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
This is the GEN MON circuit. The PCM monitors this circuit to determine the generator load and error conditions to the PCM.