Carry Out On-Board Diagnostics (Key ON Engine OFF [KOEO], Key ON Engine Running [KOER])
WARNING: This page is about a different car, the 2007 Ford Ranger. 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 Quick Test using the scan tool. Refer to the INTRODUCTION - GASOLINE ENGINES for diagnosis and testing of the powertrain control system.