KOEO On-Demand Self-Test

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: It is necessary to wait 4 seconds after key on to initiate the KOEO self-test. Failure to do so will result in a "test fail PCM" message to be displayed.

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

Perform the necessary vehicle preparation and visual inspection. Refer to QUICK TEST OPERATION .
Refer to the manufacturer manual for scan tool instructions.

NOTE: The following steps must be performed for the powertrain and transmission control modules.

Select KOEO ON DEMAND SELF-TEST.
Turn key on.
Wait 4 seconds for PCM and FICM to initialize completely.
Follow operating instructions from the menu.
Record DTCs and follow appropriate pinpoint test.
After test, cycle key to off before running other tests or driving vehicle.

If performing repeated self-tests, it may be necessary to unplug the GPCM to keep battery from going dead. Ignore any glow plug codes while the GPCM is unplugged.