Visual Inspection

Visual Inspection

A visual 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 (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, Transmission Control Module (TCM) 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 selector lever adjustments; refer to Automatic Transmission/Transaxle.


Selector Lever Check

Check for a misadjustment in the selector lever by matching the detents in the Transmission Range (TR) selector lever with those of the manual control lever in the transmission.

Hydraulic leakage at the manual control valve can cause delay in engagements and/or slipping while operating if the linkage is not correctly adjusted. Refer to Automatic Transmission/Transaxle for selector lever cable adjustment.


Check TSBs and On-Line Automotive Service Information System (OASIS)

Refer to all TSB and On-Line Automotive Service Information System (OASIS) messages that pertain to the transmission concern and follow the procedure as described.


Carry Out On-Board Diagnostic (OBD) Key ON Engine OFF (KOEO), Key ON Engine Running (KOER)

After a road test, with the vehicle warm and before disconnecting any connectors, perform a Self Test using the scan tool. Refer to Computers and Control Systems.