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 (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 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 the Leakage Inspection. Leakage Inspection
^ Correct linkage adjustments.

Selector Lever Linkage Check

NOTE: Some vehicles equipped with an automatic transmission have wiring to the clutch pedal position (CPP) switch. If the CPP wiring harness and jumper plug are present, refer to Automatic Transaxle/Transmission External Controls.

Check for an incorrectly adjusted shift linkage by matching the detents in the transmission range (TR) selector lever with those in the transmission. If they match, the incorrect adjustment 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 the TSBs which pertain to the transmission concern and follow the procedure as outlined.

Carry Out On-Board Diagnostics (Key ON Engine OFF [KOEO], Key ON Engine Running [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 for diagnosis and testing of the powertrain control system.