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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Ignition (Functional Descriptions)
Ignition CoilIndividual
ignition coils are installed in the M52 and M54 engine.
Ignition current feedback (ZSR) resistanceThe following faults are detected based on the ZSR resistance:
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Short-circuits and open-circuits in the primary ignition circuit
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No ignition sparks in secondary circuit