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

Scan Tool Cycle Outputs

Use the scan tool to activate a particular control modules output functions. A command from the scan tool to cycle an output function will be performed regardless of any specific program instructions or inputs which would normally prevent the function from occurring. This feature is helpful in determining whether output devices such as relays, actuators, or motors will operate properly or if the control module is capable of carrying out a certain output function.