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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Vehicle Damage Warnings

Caution: Never substitute an EATX controller from a previous year, as they are not interchangeable.


When testing voltage or continuity at the EATX controller connector, use the terminal side (not the wire end).

Probing a wire through the insulation will damage it and eventually cause it to fail because of corrosion.

Be careful not to spread the terminals when probing connectors.


Use care to prevent accidental shorting of terminals during tests. Such mistakes can damage fuses or components. Also, a second fault message could be set, making diagnosis of the original problem more difficult.


Use the DRBII voltmeter unless otherwise instructed to use an "external" voltmeter.

Caution: Never use a test lamp in place of a voltmeter.