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
If it fails: lemon-manuals.org.ua

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Diagnostic System Checks

IMPORTANT: Misdiagnosis could occur if the diagnostic system check is not performed before using the diagnostic tables.

The diagnostic system check determines the diagnostic trouble codes (DTCs) present, verifies proper communication, and navigates to the appropriate diagnostic table.