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)

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Diagnostic Mode, Selecting



Diagnostic Mode, Selecting

Recommended Special Tools, Workshop Equipment, Testers, Measuring Instruments and Auxiliary Items







- VAS 5052 Vehicle Diagnosis and Service Information System with
- VAS 5052/3 diagnostic cable

NOTE:
- The PIDs activated depend on engine code.
- ECM reports with module number 10 - Engine electronics.
- Transmission Control Module (TCM) (vehicles with automatic transmission) reports with module number 1A - Transmission Electronics.

Under "address word 33 - OBD", various diagnostic modes for Engine Control Module (ECM) and Transmission Control Module - TCM- (in vehicles with automatic transmission) can be selected via diagnostic tester.

The diagnostic modes monitor all components and systems which influence the emission quality.