Recommended Procedure:

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2004 Ford RV Cutaway, 2004 Ford Pickup, 2004 Ford F550 Super Duty, 2004 Ford F450 Super Duty, and 2004 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: To ensure that the DTC is a hard fault, first clear continuous DTCs (be sure to record all DTCs and Freeze Frame information before clearing). Rerun KOEO On-Demand Self Test. If the DTC is set again, a hard fault has occurred.

Connect the scan tool. Turn off all accessories. If the vehicle is equipped with an auxiliary powertrain control module (APCM), it must be turned off to perform the self-test.

Perform the necessary vehicle preparation and a visual inspection. Refer to QUICK TEST OPERATION .
Refer to the scan tool operating manual for instructions.
Key on, engine off.
Wait 4 seconds for the transmission control module (TCM), PCM and the FICM to initialize.
Follow the operating instructions from the diagnostic menu.
Perform a KOEO On Demand Self-Test.
Record the DTCs and Freeze Frame information and refer to the appropriate pinpoint test.