Carry Out On-Board Diagnostics (KOEO, KOER)
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
After a road test, with the vehicle warm and before disconnecting any connectors carry out the Self-Test using the scan tool. Refer to the Introduction - Gasoline Engines for diagnosis and testing of the powertrain control system.