Recommended Procedure:

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.

Connect the diagnostic tool. Turn off all accessories. If the vehicle is equipped with a power take-off (PTO) system or auxiliary idle control, it must be turned off to carry out the self-test.

Carry out the necessary vehicle preparation and a visual inspection. Refer to QUICK TEST OPERATION .
Refer to the diagnostic tool operating manual for instructions.
Key on, engine off.
Follow operating instructions from the menu.
Record the continuous DTCs and freeze frame information and carry out the appropriate pinpoint test for continuous DTC diagnostics.
Continuous DTCs must be cleared after a repair.