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)

Or, hide this message: temporarily or permanently

Computers and Control Systems: Locations

Engine Mounted Components, F-Series 250/550, Excursion and E-Series:






Engine Mounted Components, F-Series 650/750:






Switch Location:






Barometric Pressure (BARO) Sensor:






Switch Location:






Downshift Solenoid:






Brake Pressure Applied Switch:






Brake Pressure Applied Switch:






Electronic Throttle Control:






Relays:






Neutral Switch:






Injector Drive Module (IDM) Relay:






Electronic Engine Controls, Part 1:






Electronic Engine Controls, Part 2: