Visual Inspection: Notes

WARNING: If equipped with fire suppression system, refer to FIRE SUPPRESSION SYSTEM article for Important Safety Warnings. Failure to follow this instruction may result in serious personal injury.

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 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 Leak Inspection.
Correct linkage adjustments; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS article.