F 550 2WD Super Duty V8-6.0L DSL Turbo VIN P (2006)
Malfunction Indicator Lamp: Description and Operation
MALFUNCTION INDICATOR LAMP (MIL)
Malfunction Indicator Lamp (MIL)
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.
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On all vehicles, the MIL is located in the instrument cluster.
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The indicator is illuminated by a PCM message sent through the controller area network (CAN) to the instrument cluster.
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An engine or transmission with federal calibration operating in the failure mode effects management (FMEM) may cause the MIL to be
illuminated.
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To turn off the MIL after a repair, a clear DTCs command from the diagnostic tool must be sent to the PCM.
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For any MIL concern, go to Symptom Charts PCM Quick Test. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Symptom Related Diagnostic Procedures/Symptom Charts/QT: Powertrain Control Module (PCM) Quick Test
