Hyundai Sonata: Air Conditioning System / Evaporator Temperature Sensor Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the evaporator temperature sensor connector.
3.
Measure the resistance between terminal "+" and "-" of the evaporator temperature sensor.

Specification
Evaporator core temperature
[°C (°F)]
Resistance
[K?]
Voltage
[V]
-10 (14)
8.12
3.16
0 (32)
4.85
2.53
10 (50)
2.96
1.92
20 (68)
1.87
1.41
30 (86)
1.21
1.02
40 (104)
0.81
0.73

1. Evaporator sensor (+)
2. Sensor Ground

Diagnosis With GDS
1.
The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).
? The diagnostic system (GDS) provides the following information.
(1) Self diagnosis: Checking the failure code (DTC) and display.
(2) Current data: Checking the system input/output data state.
(3) Actuation test: Checking the system operation condition.
(4) Additional function: Other controlling such as he system option and zero point adjustment.
2.
Select the 'Car model' and the system to be checked in order to check the vehicle with the tester.
3.
Select the 'Current data' menu to search the current state of the input/output data.
The input/output data for the sensors corresponding to the Evaporator Temperature Sensor can be checked.

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the evaporator core.
(Refer to Heater -"Evaporator Core")
3.
Pull out the evaporator temperature sensor (A) from the evaporator core.

4.
Install in the reverse order of removal.
Evaporator Temperature Sensor Description and Operation
Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. ...

In-car Sensor Description and Operation
Description 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 temperatu ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: High Mounted Stop Lamp Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the rear package tray trim. (Refer to Body - "Rear Package Tray Trim") 3. Remove the high mounted stop lamp after disengaging the mounting clip. Installation 1. Install the rear high mounted stop lamp. 2. Instal ...

Hyundai Sonata LF 2014-2019 Owners Manual: Securing a child restraint seat with "Tether Anchor" system
First secure the child restraint with the LATCH lower anchors or the seat belt. If the child restraint manufacturer recommends that the top tether strap be attached, attach and tighten the top tether strap to the top tether strap anchor. Child restraint hook holders are located on the package tra ...

© 2018-2025 www.hsonatalf.org