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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CCD Bus

CCD BUS
Various controllers and modules exchange information through a communications port called the CCD Bus. The PCM transmits the malfunction indicator (check engine) lamp On/Off signal, engine RPM and vehicle load information on the CCD Bus.