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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temporarily or
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A/C Signal: Description and Operation
PURPOSE: This signal indicates that the A/C control switch is turned "ON" and the pressure switch is closed.
OPERATION: The
PCM uses this signal to adjust the
idle speed, and on some models engages the A/C compressor clutch. If this signal is not available to the PCM, the engine idle may be rough when the A/C compressor cycles. In some cases the A/C compressor will be inoperative.