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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Knock Sensor: Description and Operation
Knock SensorDescriptionWhen all of the entry conditions have been met, the input signals from the two
knock sensors are checked against variable upper and lower threshold levels that are dependent on engine speed. If either sensor input is outside the threshold, then a failure is registered. If a failure is noted on two drive cycles then the MIL will illuminate.
