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
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IAC Duty Cycle
Scan Tool Range
20% to 40%. The
IAC Duty Cycle parameter indicates the opening of the idle air (bypass) passage of the IAC motor in a measurement of a percentage. The AC Duty Cycle percentage will increase when the
PCM commands a larger idle air passage opening. The IAC Duty Cycle percentage will decrease when the IAC motor responds to a PCM command for a smaller idle air passage opening.