Normal Operation
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The TPMS module requires an operating voltage in a range between 10 and 17 volts.
Voltage is supplied by circuit 1050 (LG/VT) (ignition feed) and circuit 1003 (GY/YE) (B+ voltage at all times). Ground is provided through circuit 1205 (BK).