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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Checking Control Buttons




Checking Control Buttons






- Ignition off.

Connect an ohmmeter between break-out box socket to the appropriate button and ground (socket 36). Refer to Signal Tables Signal Tables

The ohmmeter should read 0 ohms when the respective buttons are pressed.

OK - Checking the Control Module

Not OK - Checking For an Open-Circuit