Santa Fe L4-2.4L (2001)
Control Module HVAC: Description and Operation
Circuit Description
A/C control
When the ignition switch is ON and the blower switch is in any position except OFF the blower relay coil energizes and battery voltage is applied to the
NC switch through the closed contact of the blower relay and fuse 9. With the A/C switch 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 magnetic clutch from the NC fuse
through the closed contacts of the A/C relay. The A/C compressor then runs.