Hyundai Elantra (CN7): Air Conditioning System / 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. The solar radiation received by its light receiving portion, generates an electromotive force in proportion to the amount of radiation received which is transferred to the automatic temperature control module so that the solar radiation compensation will be performed. |
Repair procedures
| Inspection |
| 1. | Emit intensive light toward the photo sensor using a lamp, and check the output voltage change. |
| 2. | The voltage will rise with higher intensive light and reduce with lower intensive light.
|
| Replacement |
| 1. | Disconnect the negative (-) battery terminal. |
| 2. | Remove the photo sensor cover (A).
|
| 3. | Press the lock pin, separate the connectors (A).
|
| 4. | Remove the photo sensor (A).
|
| 5. | Install in the reverse order of removal. |
Description and operation DescriptionThe 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.
Description and operation DescriptionThe ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.
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: Auto Defogging Sensor
Description DescriptionThe auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives signal from the sensor and restrains moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging actuat
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