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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Oscilloscope Patterns and Waveforms
Reference Waveform of Ignition SystemRefer to Reference waveform No.11 to 15 and Reference waveform No.19 and 20 under Inspection of ECM and Its Circuits for waveform of Ignition trigger signal.