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: Evaporator Core

Repair procedures Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.Remove the heater core cover (A) after loosening the mounting screws.4.Pull out the evaporator core (A) from the heater unit.

Hyundai Elantra (CN7) 2021-2026 Service Manual: Auto Defoging Actuator

Description and operation DescriptionThe auto defogging sensor is installed on front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actua