Where is the ambient temperature sensor located on Dayun heavy-duty trucks?
4 Answers
The ambient temperature sensor is located in front of the radiator or in front of the vehicle's bumper. Function of the ambient temperature sensor: The ambient temperature sensor is a device used to detect the ambient temperature around the vehicle. The control system compares the outside temperature with the interior temperature and then determines the control method. The ambient temperature sensor provides the ECU with the outside temperature signal, and the ECU uses this signal to regulate the interior temperature to meet the comfort needs of the occupants. Types of ambient temperature sensors: There are various types of ambient temperature sensors. Based on the measurement method, they can be divided into contact and non-contact types. According to the sensor material and electronic component characteristics, they are classified into thermistors and thermocouples. The ambient temperature sensor is a crucial component for controlling the interior temperature. Regular vehicle maintenance should be performed, and the condition of automotive components should be periodically inspected during normal vehicle use.
I've driven Dayun heavy trucks for many years, and the ambient temperature sensor is usually hidden behind the bumper or inside the grille. To be more specific, if you crouch at the front of the truck and look inside the bumper, you'll most likely find a small black block connected to a thin wire in front of the radiator. This location is the most scientific, as it avoids interference from engine heat while accurately capturing external airflow temperature. Once during a long-haul trip, I noticed the dashboard temperature display was erratic—turned out the sensor at the bottom of the bumper was completely clogged with mud. After cleaning it, the readings immediately returned to normal. When washing your truck, remember to wipe this area to prevent dust buildup from affecting the readings. If the sensor is damaged, you can buy a replacement for just a few dozen bucks and install it yourself, but be careful not to install the sealing gasket upside down during installation.
After repairing trucks for over a decade, I've found that 90% of Dayun trucks' ambient temperature sensors are fixed on the inner side of the front bumper beam, right behind the grille. This location offers good ventilation and easy installation - you can spot its metal probe by removing the bumper liner. Last winter, a driver complained about erratic AC temperature adjustments, and we discovered rodent damage to the sensor wiring. For DIY repairs, prepare a plastic pry tool to remove clips, and always disconnect the battery negative terminal before unplugging connectors. The sensor model number is usually labeled on its side. After replacement, remember to let the system relearn the temperature baseline.
The temperature sensor for Dayun heavy-duty trucks is located at the very front of the vehicle, near the grille behind the bumper. I always wipe that area when washing my car—it's a black square about the size of a matchbox. Last time it gave inaccurate readings, the mechanic said it might be due to a deformed or shifted mounting bracket. It took half an hour to adjust and realign it. If this sensor fails, the air conditioning will malfunction, so always pay attention to whether the external temperature display on the dashboard is abnormal while driving.
