Malfunction Indicator Lamp (MIL)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2005 Ford RV Cutaway, 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.
The MIL informs the driver that the PCM has detected an OBD emission-related component or system fault. When this occurs on a California calibrated engine, an OBD DTC is set. On a federal calibrated engine and transmission, certain faults also illuminate the MIL.
- On all vehicles, the MIL is located in the instrument cluster.
- The indicator is illuminated by a PCM message sent through the standard corporate protocol (SCP) communications network (Excursion) or the controller area network (CAN) (F-Super Duty or E-Series) to the instrument cluster.
- An engine or transmission with federal calibration operating in the failure mode effects management (FMEM) may cause the MIL to be illuminated.
- To turn off the MIL after a repair, a clear DTCs command from the diagnostic tool must be sent to the PCM.
- For any MIL concern, go to PCM QUICK TEST .