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

Reading Measuring Value Blocks





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Test conditions
- ECM in Function 04 "Basic setting"
- Vehicle stationary, engine idling
- Engine idling Control Module in "Basic setting" function
- Engine oil temperature 80 °C (176 °F) minimum
- All electrical consumers switched off (radiator fan must not run during check)
- A/C switched off