Sable V6-3.0L VIN 2 Flex Fuel (2005)
Malfunction Indicator Lamp: Description and Operation
Malfunction Indicator Lamp (MIL)
The MIL notifies the driver that the powertrain control module (PCM) has detected an OBD emission-related component or system fault. When this
occurs an OBD diagnostic trouble code (DTC) will be set.
^
The MW is located in the instrument cluster and is labeled CHECK ENGINE SERVICE ENGINE SOON or the ISO standard engine symbol.
^
The MIL is illuminated during the instrument cluster prove out for approximately 4 seconds.
^
For applications with a dedicated hard wire MIL circuit the PCM will illuminate the MIL until a profile ignition pickup (PIP) signal is detected.
For 2OO5 the following vehicles use a hard wire circuit: Crown Victoria/Grand Marquis Explorer Sport Trac and Ranger.
^
The MIL will remain illuminated after instrument cluster prove out if:
^
an emission related concern and DTC exists.
^
no PIP signal is detected (applications with a dedicated hard-wire MIL circuit). The PIP signal is generated in the PCM using the
crankshafi position (CKP) sensor. For these applications the MIL can be helpful in diagnosing a no start.
^
the PCM does not send a control message to the instrument cluster (applications with the MIL controlled through the communication link).
^
the PCM is operating in the Hardware Limited Operation Strategy (KLOS).
^
the MIL circuit is shorted to ground (applications with a dedicated hard wire MIL circuit).
^
The MIL remains off during the instrument cluster prove out if:
^
an indicator or instrument cluster concern is present.
^
the MIL circuit is open (applications with a dedicated hard wire MIL circuit).
^
To turn off the MIL afier a repair a reset command from the diagnostic tool must be sent or 3 consecutive drive cycles must be completed without
a fault.
^
For all MIL concerns go to Symptom Charts.
^
If the MIL flashes at a steady rate a severe misfire condition may exist.
^
If the MIL flashes erratically the PCM can reset while cranking if the battery voltage is low.
