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

4F50N












Line Pressure In Reverse











Accumulator Circuit In Park Or Neutral






Solenoid Feed Circuit In 1st Gear






Shift Solenoid Circuit In Park Or Neutral






Shift Solenoid Circuit B In 2nd Gear






Shift Solenoid C Circuit Park Or Neutral






Torque Converter Circuit In Park Or Neutral











Apply Component Circuit In Park Or Neutral











Apply Component Circuit In Reverse











Apply Component Circuit In 1st Gear











Apply Component Circuit In 2nd Gear











Apply Component Circuit In 3ed Gear











Apply Component Circuit In 4th Gear











Apply Component Circuit In Manual 3ed Gear











Apply Component Circuit In Manual 2nd Gear











Apply Component Circuit In Manual 1st Gear











Apply Component Circuit In 3-2 Downshift











Apply Component Circuit In 2-1 Downshift