Hyundai Genesis (DH): Air Conditioning System / Compressor Description and Operation
The compressor is the power unit of the A/C system.
It is located on the side of engine block and driven by a V-belt of the engine.
The compressor changes low-pressure and low-temperature refrigerant gas into high-pressure and high-temperature refrigerant gas.
Variable Swash Plate Compressor
The compressor has a swash plate that rotates to reciprocate pistons, which compress refrigerant.
The variable swash plate compressor controls the swash plate
angle to change the refrigerant displacement. It achieves precise
cooling capability control in accordance with vehicle interior and
driving conditions.
The externally controlled variable swash plate compressor
changes the swash plate angle by an ECV (Electric Control Valve) in
accordance with an electrical signal from the heater & A/C control
unit.
This enables stable temperature control and improves driving comfort.
ECV Control Diagram

Replacement
1.
Discharge refrigerant from refrigeration system.
2.
Replace any faulty tubes or hoses.
Cap the open fittings immediately to keep moisture or dirt out of the system.
Components
[Lambda Engine]
1. Center Bolt2. Hub Bolt3. Limiter & Damper Assembly4. Snap Ring5. Pulley6. Compressor Assembly
[Tau Engine]
1.
Other information:
Description
Integrated Rain Sensor
Integrated rain sensor (A) controls three systems: front wiper, auto-light, and central air conditioner.
1.
Wiper Control System
When "AUTO" switch signal is received from the multi-function
switch on the right, the integrated rain sensor detects the amount of
rainfall.
Self Diagnosis
1.
Self-diagnosis process
2.
How to read self-diagnostic code
After the display panel blinks three times every 0.5 second,
the corresponding fault code blinks on the setup temperature display
panel every 0.5 second and will show two figures.