Visual Inspection

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

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 powertrain control module or transmission function. Pay particular attention to add-on wiring splices in the powertrain control module (PCM) harness or transmission wiring harness, abnormal tire size or axle ratio changes.

Leaks; Refer to LEAKAGE INSPECTION  in this article.