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 Request Signal
A/C Compressor Clutch Wiring Diagram:
Purpose: The ECM utilizes the A/C request signal to energize the A/C clutch relay, unless abnormal pressure is detected. The ECM also enables the cooling fan motors when A/C is requested.
Operation: When the HVAC control assembly is placed in the A/C mode, a request signal is sent to the ECM.
