Key ON Engine OFF (KOEO) Injector Electrical Self-Test
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The KOEO injector electrical self-test is a functional test of the PCM carried out with the ignition ON and the engine OFF. This test determines if the injectors and circuits are correctly operating. If a concern is detected by the PCM, the corresponding DTCs are displayed at the end of the self-test.
- Turn off all accessories. If the vehicle is equipped with a PTO system or auxiliary idle control, it must be turned off to carry out self-tests.
- Carry out the necessary vehicle preparation and a visual inspection. Refer to QUICK TEST DESCRIPTION
- Refer to the scan tool manufacturers manual for instructions.
- Ignition ON, engine OFF.
- Carry out the KOEO injector electrical self-test.
- Ignition in OFF position.
- Record the DTCs and carry out the appropriate pinpoint test.