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: Heated Oxygen Sensor (HO2S) Specifications
Specification HO2S [Bank 1/Sensor 1] (Linear type) ItemSpecificationHeater Resistance (?)2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] (Binary type) A/F Ratio (?)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4 ItemSpecificationHeater Resistance (?)Approx. 9.0 [20°C(68°F)] ...

Hyundai Elantra AD (2016-2020) Service Manual: Multimedia Jack Description and Operation
Description The multimedia jack on the console upper cover is for customers who like to listen to external portable music players like the MP3 etc., through the vehicle's sound system when it is linked to this jack. The customer has this added option. In case of distortions from media conn ...

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