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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Diagnosis System

DESCRIPTION

The network gateway ECU controls the functions of the multiplex communication system on the vehicle. Data of the multiplex communication system and the Codes (DTC) can be read in the Connector DLC3 of the vehicle.