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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Pulse Check

PULSE CHECK

1. The input signals (signals other than SWS communication line signals), which are compatible with the SWS monitor by using the scan tool MB991958 (M.U.T.-III Sub Assembly) or voltmeter, can be confirmed by the Pulse Check.
2. Use the scan tool MB991958 (M.U.T.-III Sub Assembly) or voltmeter to check the following input signals.

NOTE: If a problem is found in the Pulse Check, refer to Input Signal Chart. Input Signal Chart