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2013-14 Shelby GT500
Wrench Light
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<blockquote data-quote="Snoopy49" data-source="post: 14689086" data-attributes="member: 138649"><p>From the 2014 Mustang Service Manual.</p><p></p><p><strong>Malfunction Indicator Lamp (MIL)</strong> </p><p>The MIL notifies the driver the PCM has confirmed an on board diagnostic (OBD) emission related component or system concern. When this occurs, an OBD DTC sets. </p><p>• The MIL is located in the instrument panel cluster (IPC) and is labeled CHECK ENGINE, SERVICE ENGINE SOON or the international standards organization (ISO) standard engine symbol. </p><p>• The MIL is illuminated with the ignition ON, engine OFF, until the engine is cranked for starting. The MIL will turn OFF after engine start if no concerns are present. </p><p>• The MIL may flash after 17 seconds with the ignition ON, engine OFF, unless the OBD inspection/maintenance (I/M) readiness indicators indicate all of the OBD monitors have completed since the last keep alive memory (KAM) reset or since the PCM DTCs have been cleared with a reset command from the scan tool. </p><p>• The MIL will remain illuminated after engine start if a confirmed emission related concern or an OBD DTC exists. </p><p>• If the MIL flashes at a steady rate, after engine start, a severe misfire condition may exist. </p><p>• The MIL will remain OFF with the ignition ON, engine OFF, if a MIL indicator or IPC concern is present. </p><p>• To turn OFF the MIL after a repair, a reset command from the scan tool must be sent, or 3 consecutive drive cycles must be completed without a concern. </p><p>• If the MIL flashes erratically, a low battery voltage concern may be present causing the PCM to reset during cranking. </p><p>• For all MIL concerns, go to Section 3 , Symptom Charts.</p></blockquote><p></p>
[QUOTE="Snoopy49, post: 14689086, member: 138649"] From the 2014 Mustang Service Manual. [B]Malfunction Indicator Lamp (MIL)[/B] The MIL notifies the driver the PCM has confirmed an on board diagnostic (OBD) emission related component or system concern. When this occurs, an OBD DTC sets. • The MIL is located in the instrument panel cluster (IPC) and is labeled CHECK ENGINE, SERVICE ENGINE SOON or the international standards organization (ISO) standard engine symbol. • The MIL is illuminated with the ignition ON, engine OFF, until the engine is cranked for starting. The MIL will turn OFF after engine start if no concerns are present. • The MIL may flash after 17 seconds with the ignition ON, engine OFF, unless the OBD inspection/maintenance (I/M) readiness indicators indicate all of the OBD monitors have completed since the last keep alive memory (KAM) reset or since the PCM DTCs have been cleared with a reset command from the scan tool. • The MIL will remain illuminated after engine start if a confirmed emission related concern or an OBD DTC exists. • If the MIL flashes at a steady rate, after engine start, a severe misfire condition may exist. • The MIL will remain OFF with the ignition ON, engine OFF, if a MIL indicator or IPC concern is present. • To turn OFF the MIL after a repair, a reset command from the scan tool must be sent, or 3 consecutive drive cycles must be completed without a concern. • If the MIL flashes erratically, a low battery voltage concern may be present causing the PCM to reset during cranking. • For all MIL concerns, go to Section 3 , Symptom Charts. [/QUOTE]
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