Operation CHARM: Car repair manuals for everyone.

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:
- 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 powertrain control module (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 linkage adjustments.

Shift Linkage Check
Check for a misadjustment in shift linkage by matching the detents in the transmission range selector lever with those of the manual lever in the transmission. If they match, the misadjustment is in the indicator. Do not adjust the shift linkage.

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 technical service bulletins (TSBs) that pertain to the transmission concern and follow the procedure as described.

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 scan tool. Refer to Computers and Control Systems.