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Home >> Lincoln >> 2009 >> Navigator 4WD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging System >> Diagnosis And Testing >> Pinpoint Test >> Pinpoint Test F: The Generator is Noisy >> Normal Operation

Normal Operation

The generator is belt-driven by the engine accessory drive system. There are 2 sources of generator noise: bearing noise and electrical fault noise. A generator with certain types of diode or stator failures may also produce an audible noise.

This pinpoint test is intended to diagnose the following: 

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