Performing Self-Test

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. 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.

Perform the necessary vehicle preparation and visual inspection.
Refer to the scan tool manufacturer manual for scan tool instructions.
Select KOEO ON-DEMAND SELF-TEST.
Turn ignition on.
Wait 10 seconds for PCM and FICM to initialize completely.
Follow operating instructions from the menu.
Record DTCs and perform appropriate system test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
After test has been completed, cycle ignition off before performing other self-tests or driving vehicle.

NOTE: If performing repeated self-tests, it may be necessary to disconnect the GPCM to keep battery from going dead. GPCM is located on top, front of engine. Ignore any glow plug DTCs while GPCM is disconnected.