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: Description and Operation




Notice regarding "[!] Current fault patterns"
Under "[!] Current test patterns" the user can find test modules for current fault patterns encountered in specific vehicles. Valid fault patterns are displayed only for the vehicle identified by the system. If no fault patterns are available in "[.] Current fault patterns" then troubleshooting should continue using the test modules assigned to the vehicle functions in the function structure. These include all additional known malfunctions as well as the entire scope of the functional check.