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)
Or, hide this message:
temporarily or
permanently
A/C Signal: Description and Operation
This signal tells the ECM that the A/C selector switch is turned "ON", and that the high side low pressure switch is closed. The ECM uses this to adjust the
idle speed when the air conditioning is working.