Normal Operation
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Switched battery voltage is normally provided to the digital transmission range (TR) sensor for vehicles equipped with an automatic transmission (A/T) or to the reversing lamp switch for vehicles equipped with a manual transmission (M/T) through circuit 295 (LB/PK). When the transmission is placed in REVERSE, the digital TR sensor (A/T) or reversing lamp switch (M/T) routes power to circuit 1043 (DG/YE) and circuit 140 (BK/PK) which provides power to the reversing lamps.