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:
- A/C
- 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 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 Leakage Inspection. Leakage Inspection
^ Correct linkage adjustments, refer to External Controls.

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
Refer to all TSBs 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 Self-Test using the scan tool. Road Testing Vehicle

Refer to Computers and Control Systems for diagnosis and testing of the powertrain control system.