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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Data Link Connector: Description and Operation

Diagnostic Connector Location:






The [1][2]diagnostic connector is located under the hood, next to the PCM.

Data Link Connector Identification:






The [1][2]diagnostic connector provides the technician with a way to read PCM inputs and actuate most PCM output devices through the use of a scan tool.