Visual Inspection: Notes

WARNING: This page is about a different car, the 2002 Lincoln Navigator and 2002 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis.

Inspect vehicle for non-Ford approved add-on devices such as:

Electronic add-on items
- Air conditioning.
- Generators (alternators).
- Engine turbo.
- Cellular telephones.
- Cruise controls.
- CB radios.
- Linear amplifiers.
- Backup alarm signals.
- Electronic brakes for trailer towing.
- Computers.
Vehicle modifications.

These items, if not installed correctly, will affect powertrain control module (PCM) or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, abnormal tire size or axle ratio changes.

Leaks; refer to LEAKAGE INSPECTION in this article.