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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A/C Signal: Description and Operation
The
Electronic Control Assembly (ECA) monitors the A/C clutch apply signal and adjusts the Idle Speed Control By-Pass Air (ISC-BPA) valve as needed to maintain proper
idle speed.