Normal Operation
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
When the keypad illumination is activated, the smart junction box (SJB) supplies power to circuit 66 (LB) to illuminate the keypad. The keypad illumination is grounded through circuit 1205 (BK).