Visual Inspection

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 (alternators)
- engine turbo
- cellular telephone
- cruise control
- CB radio
- linear amplifiers
- 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.
^ Proper linkage adjustments.

Shift Linkage Check
Hydraulic leakage at the manual control valve can cause delay in engagements and/or slipping while operating if the linkage is not correctly adjusted.

Check TSBs and OASIS
Refer to all technical service bulletins and OASIS messages which pertain to the concern and follow the procedure.

Carry Out On - Board Diagnostics (KOEO, KOER)
After a road test, with the vehicle warm and before disconnecting any connectors carry out the Quick Test using the diagnostic tool. Refer to Computers and Control Systems.