Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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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 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 selector lever linkage adjustments. Refer to Automatic Transmission/Transaxle.


Selector Lever Linkage Check

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

Check TSBs

Refer to all TSBs which pertain to the concern and follow the procedure.