Inspection and Verification

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

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.

1.

Verify the customer concern by operating the charging system.

2.

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

Inspect fuses.
Check the battery for loose, damaged or corroded connections.
Check the generator for loose, damaged or corroded connections.
Check the engine and battery grounds for loose, damaged or corroded connections.
High current BJB for loose, damaged or corroded connections.
Inspect wiring, terminals or connectors.

3.

Check the battery condition and state of charge. Refer to Battery, Mounting and Cables Diagnosing and Testing.

4.

Check for abnormal ignition-off current drain(s). Refer to Battery, Mounting and Cables General Procedures.

5.

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding.

6.

Using the diagnostic scan tool, retrieve all Diagnostic Trouble Codes (DTCs). Refer to the appropriate DTC Chart in this article.