System Tests: Notes
WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, and 2002 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Always check module power and ground circuits prior to replacing a control module. See appropriate COMPUTER DATA LINES, GROUND DISTRIBUTION or POWER DISTRIBUTION in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.