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
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Control Assembly: Description and Operation
With the ignition switch in
ON, battery voltage is applied to the coil of the blower relay from fuse 16. With the blower switch in any position except
OFF ground is provided to the coil of the blower relay through the blower switch. Battery voltage is then applied to the N C switch through the closed contacts of the blower relay and the A/C fuse 2. With the A/C switch in
ON, the engine control module (ECM) will ground the coil of the A/C control relay after a short delay to adjust idle speed. Battery voltage will then be applied to the
compressor clutch from A/C fuse 1 and the closed contacts of the A/C relay to make the A/C compressor run.