Visual Inspection: Notes

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 turbos
  • cellular telephones
  • cruise controls
  • turbo engine brake
  • CB radios
  • linear amplifiers
  • backup alarm signals
  • electronic brakes for trailer towing
  • computers
• Vehicle modifications.

These items, if not installed correctly, will affect 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.