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
Air Conditioning Switch Sense
When the air conditioning or defrost switch is put in the ON position and the low pressure switch, combination valve, and high pressure switch close, the PCM receives an A/C input.
After receiving this input, the PCM activates the A/C compressor clutch by grounding the A/C clutch relay.
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The PCM also adjusts
idle speed to a scheduled RPM to compensate for increased engine load.