Visual Inspection
WARNING: This page is about a different car, the 2002 Mercury Villager. 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 the vehicle for non-Ford factory add-on devices such as:
- electronic add-on items
- air conditioning
- generator (alternators)
- engine turbo
- cellular telephone
- cruise control
- CB radio
- linear amplifiers
- backup alarm signal
- computer
- Vehicle modification:
- These items, if not installed correctly, may affect the Transaxle Control Module (TCM), or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, or abnormal tire size.
- Leaks; refer to SPECIAL TESTING PROCEDURES .
- Correct linkage adjustments; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .