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
Control Module HVAC: Description and Operation
Wiring Diagram For A/C Clutch Circuit:
When the Electronic Climate Control (ECC) head is switched to the "ON" position and the A/C system has adequate charge, an A/C request signal is sent to the ECM. When the A/C request signal is received by the ECM, the ECM will delay grounding
relay circuit 459 long enough to adjust idle speed.
