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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Engine Mount

With the ignition switch in RUN or START, power is supplied to the engine mount control unit and the engine mount control solenoid valve. The control unit receives the engine rpm signal from the ignition control module (ICM). When the engine is running below 850 rpm, the control unit sends a signal to the solenoid valve, and the valve opens.