Performing Self-Test

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Ford RV Cutaway, 2002 Ford Pickup, 2002 Ford F550 Super Duty, 2002 Ford F450 Super Duty, and 2002 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

To perform self-test, turn ignition off. Ensure test equipment is properly attached. If vehicle is equipped with an auxiliary powertrain control system (RPM control), it must be turned off before performing self-test. Using NGS tester, perform the following steps:

Start engine and allow it to idle.
Select VEHICLE & ENGINE SELECTION menu.
Select VEHICLE, YEAR & MODEL.
Select DIAGNOSTIC DATA LINK.
Select PCM - POWERTRAIN CONTROL MODULE.
Select DIAGNOSTIC TEST MODE.
Select KOER SWITCH SELF-TEST.
Follow operating instructions from NGS tester menu. After pressing "Trigger" to start test, wait 5 seconds before running through driver-operated controls. Test may also take up to 5 minutes to complete.
After test has been completed, cycle ignition off before running other tests or driving vehicle.
On F650-750 with an Allison automatic transmission, shift from Neutral to Drive and back to Neutral to validate Neutral switch.
If vehicle is not equipped with speed control, ignore DTCs P0565-P0569.