Hyundai Elantra: Air Conditioning System / Compressor Description and Operation

Description
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 improved driving sensation.
ECV Control Diagram

Refrigerant Line Repair procedures
Replacement 1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off. 2. Disconnect the neg ...

Compressor Components and Components Location
Components [Nu Engine] 1. Clutch bolt2. Limiter & Hub Assembly3. Compressor clutch hub spacer4. Retainer5. Pulley6. Clutch field coil assembly7. Compressor assembly8. Electric control valv ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Front Impact Sensor (FIS) Description and Operation
Description • The front impact sensors (FIS) are installed on the upper of the side panel in Front End Module (FEM). They are remote sensors that detect acceleration due to a collision at their mounting locations. • The primary purpose of the Front Impact Sensor (FIS) is to pro ...

Hyundai Elantra AD (2016-2020) Service Manual: Blower Unit Components and Components Location
Component Location 1. Blower unit assembly Components 1. Seal2. Intake duct case3. Intake actuator4. Intake door5. Intake duct case [A]6. Air filter cover7. Air filter8. Blower unit pad9. Blower upper case10. Cluster ionizer11. Blower lower case12. Power mosfet13. Resistor14. Blower moto ...

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