Recommended Procedure:

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.

This test determines if the injector circuits and coils are correctly operating. All injectors click simultaneously for approximately 2 seconds, then each individual injector clicks for approximately 1 second in numerical order 1 through 8. If an electrical concern is present, a DTC sets and outputs on the data link at the end of the test when requested by a scan 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 self-tests.
Carry out 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.
Carry out the KOEO Injector Electrical Self-Test.
Key in OFF position.
Record the DTCs and carry out the appropriate pinpoint test.