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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Information Center - Instrument Cluster (Ic), Message Center, & Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (Ic), Message Center And Warning Chimes >> Principles of Operation >> Instrument Cluster >> Check Fuel Cap Warning Indicator

Check Fuel Cap Warning Indicator

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

The check fuel cap indicator is used to indicate significant leaks in the fuel tank evaporative emission system due to a loose fuel cap or other fuel evaporative emission system concern. The fuel tank pressure is monitored by the PCM and, once a leak is detected, the PCM signals a fault to the instrument cluster (IC) over the HS-CAN.

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