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

Display Groups 0-9 (Basic Functions)




- Engine running at idle

Indicated on display


Read Measuring value Block 1 ->


Display Group 1:






Explanation of 8 digit numeric block







Evaluation display group 1, display field 1 - engine speed (idle speed)







- Engine running at idle

Indicated on display


Read Measuring value Block 2 ->


Display Group 2:






Evaluation display group 2, display field 3 - injection timing







Evaluation display group 2, display field 4 - mass air taken in







- Engine running at idle

Indicated on display


Read Measuring value Block 3 ->


Display Group 3:






- Engine running at idle

Indicated on display


Read Measuring value Block 4 ->


Display Group 4:






Evaluation display group 4, display field 2 - control module voltage supply







Evaluation display group 4, display field 3 - coolant







Evaluation display group 4, display field 4 - intake air temperature








- Engine running at idle

Indicated on display


Read Measuring value Block 5 ->


Display Group 5:






- Engine running at idle

Indicated on display


Read Measuring value Block 6 ->


Display Group 6: