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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1112 (Instrument Cluster (Ic), Message Center, And Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC) and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AD: The Water In Fuel Warning Indicator Is Never/Always On >> Normal Operation

Normal Operation

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The PCM is hardwired to a water in fuel sensor. When water is detected in the fuel, the PCM sends a message over the communication network to the instrument cluster (IC), to illuminate the water in fuel indicator.

This pinpoint test is intended to diagnose the following:

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