Hyundai Elantra: 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 improved driving sensation.
ECV Control Diagram

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 ...
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: Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the steering wheel.
(Refer to Steering System - "Steering Wheel")
3.
Remove the steering column upper and lower shrouds after loosening the screws.
(Refer to Body - "Steering Column Shroud Panal")
4.
Remove the cloc ...
Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specifications
ItemsSpecificationHoodTypeFront openine type, rear hinged, stay rod typeFront DoorConstructionFront hinged, frame door constructionRegulator systemWire drum typeLocking systemPin-fork systemRear DoorConstructionFront hinged, frame door constructionRegulator systemWire drum typeLo ...