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: Auto Lighting Control System
Description and operation DescriptionIt's a system that uses illumination sensor to automatically turn ON the tail lamp and head lamp based on the change in surrounding environment's illumination condition. It activates when the vehicle enters/exits tunnel, or when the illumination condition in surrounding environment changes due to rain, snow, or
Hyundai Elantra (CN7) 2021-2026 Service Manual: Description and operation
DescriptionThe immobilizer system will disable the vehicle unless the proper ignition key is used, in addition to the currently available anti-theft systems such as car alarms, the immobilizer system aims to drastically reduce the rate of auto theft.1.
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