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)




Measured Value Blocks, Display Groups 0...9 - Basic Functions, Evaluating







Evaluating display group 1, display zone 1 - Engine speed (idle speed)







Significance of figures in 8 digit number block, display zone 4 - Adjustment conditions







Display group 2 - Basic Functions - Mass Air Flow (MAF) Sensor







Evaluating display group 2, display zone 4 - Mass Air Flow (MAF)







Display group 3 - Basic Functions - Mass Air Flow (MAF)







Display group 4 - Basic Functions







Evaluating display group 4, display zone 2 - control module voltage supply







Evaluating display group 4, display zone 3 - Engine Coolant Temperature (ECT)







Evaluating display group 4, display zone 4 - Intake air temperature (IAT)







Display group 5 - Basic Functions







Display group 6 - Basic Functions







Display group 8 - Basic Functions - Brake System Vacuum Pump (automatic transmission only)