Visual Inspection

This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Ford factory add-on devices such as:
- electronic add-on items:
+ air conditioning
+ generator (alternator)
+ engine turbo
+ cellular telephone
+ cruise control
+ CB radio
+ linear booster
+ backup alarm signal
+ computer

- Vehicle modification:

These items, if not installed correctly, will affect the 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.
- Correct linkage adjustments.