Hyundai Elantra (CN7): Air Conditioning System / In-car Sensor

Hyundai Elantra (CN7) 2021-2026 Service Manual / Heating, Ventilation and Air Conditioning / Air Conditioning System / In-car Sensor

Description and operation

Description

The In-car air temperature sensor is built in the heater & A/C control unit.

The sensor contains a thermistor which measures the temperature of the inside. The signal decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit and according to this signal the control unit regulates in-car temperature to intended value.

Components and components location

Components Location

1. In-car Sensor

Repair procedures

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the Heater & A/C Control Unit. (Refer to Controller - "Heater & A/C Control Unit (DATC)")

3.	To install, reverse the removal procedure.

❮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.

Photo Sensor❯

Description and operation Description 1.The photo sensor is located at the center of the defrost nozzles.2.The photo sensor contains a photovoltaic (sensitive to sunlight) diode.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: General safety information and caution

Instructions (R-134a)When Handling Refrigerant1.R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves. 2.It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands.

Hyundai Elantra (CN7) 2021-2026 Service Manual: Receiver-Drier

Repair procedures Replacement1.Remove the condenser.2.Remove the cap (A) on the bottom of the condenser with a L wrench. Tightening torque : 9.81 - 14.71 N.m (1.0 - 1.5 kgf.m, 7.2 - 10.8 lb-ft) 3.Remove the receiver-drier (A) from condenser using a long nose plier.