Cylinder Heads: Notes
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
When servicing cylinder head, use care when working with engine wiring harness for fuel injectors, as Injector Driver Module (IDM) supplies 115 volts DC to each fuel injector on engine wiring harness. DO NOT pierce any wires in engine wiring harness. Ensure negative battery cables are disconnected before servicing engine components in which contact with engine wiring harness for fuel injectors may exist.