Santa Fe GLS V6-2.7L (2002)
Control Module HVAC: Description and Operation
Blower and A/C Controls (Full Auto)
Circuit Description
The A/C control module receives inputs from the A/C sensors (for instance, photo sensor, ambient sensor, etc.) and controls the function of the air
conditioning system. The A/C control module and various sensors provide accurate control of the air mixture using mode actuator, temperature actuator
and intake actuator under all operating conditions.
The blower motor runs at the highest speed when the high blower relay coil energized through A/C control module. 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. The function of the power transistor is that of
the blower resister in manual A/C.