Pinpoint Test F : The Generator Is Noisy: Notes

WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Overview

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for more information.

Refer to Charging System , for schematic and connector information.

Normal Operation and Fault Conditions

The generator is belt-driven by the engine accessory drive system. There are several sources of generator noise which include bearing noise, electrical fault noise, generator or belt pulley misalignment. A generator with certain types of diode or stator failures may also produce an audible noise.

Visual Inspection and Diagnostic Pre-checks

Before diagnosing or repairing the charging system inspect the following items:

Fusible links
Wiring, terminals or connectors
High current BJB for loose or corroded connections

This pinpoint test is intended to diagnose the following:

FEAD belt
Loose bolts/brackets
Generator/pulleys