Hyundai Elantra (CN7): Air Conditioning System / Refrigerant Line

Hyundai Elantra (CN7) 2021-2025 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / Refrigerant Line

Components and components location

Components Location

1. Refrigerant Pipe Assembly


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 negative (-) battery terminal.
3.
Recover the refrigerant with a recovery / charging station.
4.
Remove the bolts and the expansion valve (A) from the evaporator core.
Tightening torque :
8.8 - 13.7 N.m ( 0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)

5.
Loosen the mounting nuts, and then disconnect the discharge line (B) and liquid line (A) from the condenser.
Tightening torque :
8.8 - 13.7 N.m ( 0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)

6.
Disconnect the A/C pressure transducer connector (A).

7.
Remove the engine room under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
8.
Remove the bolts, then disconnect the suction line (A) and discharge line (B) from the compressor.
Tightening torque :
21.6 - 32.4 N.m ( 2.2 - 3.3 kgf.m, 15.9 - 23.9 Ib-ft)
   
•
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.

9.
Remove the refrigerant line assembly (A) to the upper of engine room.
Tightening torque :
7.8 - 11.8 N.m ( 0.8 - 1.2 kgf.m, 5.8 - 8.7 Ib-ft)

10.
To install, reverse the removal procedure.
   
•
Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
•
Tighten the bolt or nut joint to the specified torque.
•
Using a gas leak detector, check for refrigerant leakage.
•
Evacuate air in the refrigeration system and charge system with refrigerant.
Capacity : 500 ± 25 g (17.6 ± 0.88 oz.)

    Repair procedures Oil Specification1.The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil.

    Description and operation DescriptionThe 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.

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Evaporator Temperature Sensor

    Description and operation DescriptionThe evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

    Hyundai Elantra (CN7) 2021-2025 Service Manual: ADAS Parking ECU (ADAS_PRK)

    Components and components location Components and Components Location Repair procedures Removal    • Use a plastic panel removal tool to remove interior trim pieces without marring the surface.• Take care not to bend or scratch the trim and panels.

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