Why should the car be tested for air conditioning electronic control system?

It's definitely going to be his system tested. Because it may affect some other functions of the car.

When the car is in production, it must be developing in the direction of more comfort, and the installation of air conditioning is also developing in this direction.

It is more free to operate and safer to drive in the best condition.

It is important to give the air conditioner a comprehensive medical check-up in the summer. First of all, check whether the air conditioner is deficient in fluoride. Before using the car air conditioner, the cleanliness of the surface of the condenser and evaporator should be checked.

Hello, if you do the air conditioning electronic control system test, it is for him to turn on the air conditioner when he is other. The power supply does not fail, and then there is no conflict.

It is equipped with an automatic control dual air conditioning system, which can centrally control the air conditioning and heating in the car to realize the integration of ventilation, heating and cooling. It can adjust the temperature and humidity in the car all year round, and is the ideal automotive air conditioning system at present. The refrigeration system adopts vapor compression refrigeration, the refrigerant is fluorine-free green refrigerant R134A, and the electrical control is automatic control.

The electrical control system is mainly composed of air conditioning switches, relays, evaporator temperature sensors, water temperature sensors, pressure switches, solenoid valves, engine electronic control units, BSI intelligent control boxes, etc., the main role is to ensure that the air conditioning system can work effectively and protect the air conditioning system and engine under harsh working conditions. Basic control functions of the system.

1) When the water temperature rises to 97, the electric fan starts to rotate at low speed;

2) When the air conditioner switch is closed, the electric fan rotates at low speed;

3) When the water temperature reaches 105, the electric fan rotates at high speed;

4) The pressure of the refrigeration system is greater than 1600kpa, and the electric fan rotates at medium speed;

5) The pressure of the refrigeration system is greater than 2100kpa, and the electric fan rotates at high speed;

6) When the pressure of the refrigeration system is greater than 2600kpa, the air conditioning compressor circuit will be automatically disconnected;

7) When the pressure of the refrigeration system is less than 250kpa, the air conditioning compressor circuit will be automatically disconnected;

8) When the water temperature reaches 115, the air conditioning compressor circuit will be automatically disconnected;

9) When the water temperature reaches 118, the alarm will be called;

The diagnosis of automatic air conditioning system can be assisted in fault judgment with the help of diagnostic instrument, but it cannot completely rely on the display results of diagnostic instrument, but should be comprehensively analyzed on the basis of familiar with the structure and control principle of the system. The maintenance of automatic air conditioning is not mysterious, it is only the electrical control part is automatic, and the other parts are the same as the traditional manual air conditioner, so in the fault diagnosis and maintenance, it is also the same as the maintenance of ordinary air conditioning, from simple to complex, from easy to difficult, pay attention to carefully check the leakage of pipeline joints, and the function of control components.

Regular inspections are naturally for the performance of the air conditioning electronic control system, and in order to make the temperature in the car reach the most comfortable state

If you don't have air conditioning, you will definitely not be comfortable in summer, and you will not have to check it regularly if you don't come to air conditioning for months in winter and autumn.

It's the same as why people have to do a physical examination! Guarantee that there is no problem, and if there is a problem, fix it early! Hope! Thank you!

Because the car can be the size of the place, once which circuit goes wrong? It is easy to cause a sudden change in current, which affects the safety of other electrical appliances and affects the safety of the car, so the general circuit will do as much self-test as possible in this aspect of the system.

By testing the electronic control system of the air conditioner of the car, we can know whether the air conditioner of the car can work normally.

Of course, the car has to do the air conditioning electronic control system test, because many cars are equipped with air conditioners, which is likely to affect the safety of the car.

In this case, it must have a lot to do with the stability system of this car air conditioner.

There is definitely a benefit to detecting it, and there is no problem with it.

For the safety of the car, the line is made of no aging

The editor-in-chief said that many friends do not know much about car knowledge. In order to make it easier for you to understand this knowledge, today we will introduce to you how the editor-in-chief can test the automotive air conditioning system. The function of the automotive air conditioning system is to provide a comfortable riding environment for the occupants, reduce the fatigue intensity of the driver, and improve safe driving.

In order to enjoy the cool breeze on a hot day, you need to check your car's air conditioner before summer. The inspection items include refrigerant circulation, air conditioning hoses, hose fittings, compressor belts, etc. The details are as follows:

1.Detection of refrigerant circulationFrom the window of the dry tank, the refrigerant circulation status can be detected at the same time, and the refrigerant dosage in the system can be roughly detected. Start the engine, turn on the air conditioning system, rotate the engine at high idle speed (1500 kl min) for 5 minutes, and observe the drying tank window.

If the liquid flows normally, the circulation is normal; If the liquid does not flow, the tightness of the system should be checked and repaired; When there are bubbles, it means that the refrigerant is insufficient, and the system must be tested and repaired, and a suitable refrigerant must be added. If there are milky white bubbles, it means that the humidity of the refrigeration system is too high. 2. After testing the air conditioner hoses, hose joints, and compressor belts that are temporarily not used with the air conditioner, the first use of the air conditioner after the change of seasons may find that the air conditioner is not cooled. In this case, the air conditioning hose and fittings need to be inspected.

The air conditioner hose is aging and needs to be replaced if there is a leak, and the hose fitting needs to be tightened if it is loose. The compressor is the basic of the air conditioner, and all refrigerators are as basic as household air conditioners and refrigerators, and the compressor is very good. If the belt of the compressor becomes loose due to long-term use, it will be related to the normal operation of the air conditioning system.

The biggest problem of car air conditioning is similar to that of home air conditioning, either it does not cool down, the cooling effect is not good, or there is a peculiar smell. In order to enjoy the cool cold breeze in the hot summer, it is necessary to systematically check the air conditioning of the car before the summer season, mainly the air conditioning compressor, refrigerant and air conditioning hose.

Why the car is empty and not cooled:

1.Lack of refrigerant. The loss of refrigerant is mainly leakage. If the car has a bad adjustment in time, the refrigerant will start to deteriorate after a period of time, which may be a condenser leak.

2.The condenser is too dirty. This can lead to high engine temperatures or poor air conditioning. When cleaning, be sure to blow it clean with a spray gun first.

3.There is water in the pipes. In the refrigeration system of the automotive air regulations, there is a drying tank whose task is to absorb moisture from the refrigerant.

When the desiccant in the drying tank is saturated, the water can no longer be filtered out, and the moisture in the coolant will freeze in the pores, resulting in poor refrigerant circulation and increased resistance, resulting in air conditioning that cannot be cooled.

4.The compressor capacitor is damaged or defective, causing the compressor to not work.

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You can observe whether there is damage to the outer surface of each part of the empty system through the window of the drying tank, and check whether the refrigerant is in normal condition. When checking the system, you should park your car in a well-ventilated area.

Check the cycle of refrigerant silver only. The refrigerant circulation can be checked through the window of the drying tank, and the amount of refrigerant in the system can be roughly checked. Start the engine, turn on the air conditioning system, make the engine idle at high (1500 2000r 5min) and rotate for 5 minutes, and then observe the window of the drying tank.

If the liquid flows normally, the circulation is normal; If the liquid does not flow, the tightness of the system should be checked and repaired; If air bubbles appear, the refrigerant is insufficient, the tightness of the system should be checked and repaired, and then a suitable refrigerant should be added; If milky bubbles appear, the humidity of the scumbag refrigeration system is too high.

In addition, if you use the air regulator for the first time after the change of seasons after the air regulator has been out of service for a period of time, you may find that the air regulator does not cool down, so you need to check the air regulator hose and fittings. The empty adjustable hose is aging, there is a leak that needs to be replaced, and the hose fitting is loose and needs to be tightened. The compressor is the basis for air adjustment.

All refrigerators like home air conditioners and refrigerators are the same. Good compressor. If the compressor belt becomes loose after long-term use, it will affect the normal operation of the air conditioning system.

Millions of car purchase subsidies.

Testing methods for automobile air conditioners: 1. Compressor operation status: whether the transmission belt is broken or relaxed; whether there is noise inside the compressor; Whether the compressor clutch is slipping.

2. The state of the condenser and fan: whether the condenser heat sink is covered with dust; Whether the condenser fan is working well. 3. The blower fan key imitates the running pants and is bright

Make the fan run at low, medium and high speeds, if there is abnormal noise or poor operation of the motor, it should be repaired or replaced, otherwise the air supply airflow is insufficient; 4. Check the amount of refrigerant liquid: If you see a large number of bubbles through the observation window, it means that the refrigerant is insufficient, and check whether there is oil stain at the joints and joints of each device.

Hello the answer is:

Observe the two inlet and outlet hoses of the refrigeration compressor, compare the temperature difference between the inlet pipe and the discharge pipe of the condenser with your hands, and touch the inlet and discharging pipes of the reservoir drying bottle with your hands, and the temperature should be the same. If the temperature difference between the inlet and outlet hoses is relatively large, it means that the system is abnormal. This is usually due to the blockage of the reservoir drying bottle.

Feel the cold air outlet of the evaporator with your Ashido hand, it should feel cold, and the wind speed should be large enough. When the air conditioner is running normally, even if the stove is missing in the hottest summer, the temperature difference between the inside and outside of the cabin can be kept above 7 8 degrees. Not.

Then, it may be due to insufficient cooling capacity of the car (in most cases), or it may be caused by unsatisfactory thermal insulation of the cabin.

Keep the condenser clean The heat exchange condition of the condenser has a lot to do with the degree of cleanliness of the condenser, so it should always be checked whether there is dirt and dirt on the surface of the condenser, and whether the heat sink is bent or blocked.

If the owner inspects the air conditioning system of the car, he should check his measurement and air volume through debugging.

The owner of this car can not check the trace trousers, because he does not understand this piece, so the owner can drive the car to the maintenance plant, let the master give you a regular car air conditioning system inspection is simple.

At this time, how should you check the air conditioning system of your car, start the car and look for it, see if there is any air leakage belt in the dust car, whether there is a loose situation in the sail teaser, and then check whether the air conditioner is easy to use.

These car owners should directly check the car air conditioner, if you can't turn on this way of inspection, you can no longer use it.

The so-called maintenance of the automobile air conditioning system is to maintain its good technical condition and working dust infiltration reliability through regular inspection and adjustment of the automobile air conditioning system. In order to ensure that the car air conditioner can run well and play its due role, in addition to the correct operation in the process of making the socks in use, ,..

Car Air Conditioner Inspection Steps:

1. Whether the pressure of the cooling medium is normal. (See if there is any leakage).

2. Whether the compressor is working normally. (Some will appear only to turn but not compress).

3. Whether there is water and impurities in the pipeline. (In the past, when the cooling medium was added, water was mixed or rubber fell off in the road).

4. Look at the front radiator to see if it is blocked or the heat sink falls off (if the heat dissipation is not good, the cooling will not be good).

5. Check whether the condenser is blocked (the refrigeration is good, and the plugging is not effective).

6. Check whether the drying bottle and the bulging valve are blocked. (This requires a professional mechanic to judge).

There are several types of car air conditioning fault phenomena:

1. The temperature of the high and low pressure pipes of the air conditioner felt by the hand is just in line with the normal situation, but the car just doesn't feel cold. What is certain is that there is no problem with the refrigeration of the air conditioner. The problem may lie in:

Temperature regulation system for air conditioners. Check that the heating switch control cable is not falling off and that the heating water valve is in the closed position. If you can touch the front and rear of the water valve with your hands, the normal situation should be that the temperature is high on the side near the engine and low on the side near the car body.

If it is incorrect, adjust the heating switch to the off state, if it does not effectively cut off the cooling water inlet, you need to replace the heating switch.

2. Touch the air conditioning pipe, the high-pressure pipe is very hot or even hot, and of course, the low-pressure pipe will not be cold. In this case, the compressor may be switched on and off frequently. Especially when the engine is running at high speeds, the compressor does not engage at all.

Do not be able to transport at high speed for a long time, otherwise it will be very dangerous. Look for dirt in the condenser and tank and between them. If so, remove the dirt.

If there is indeed no dirt blockage, check the refrigerant observation window to see if there is too much refrigerant. The phenomenon is that you can see the liquid flowing, but you can't see any bubbles, which proves that the refrigerant is filled too much, and you need to do a standard pumping refill.

Note: For the phenomenon of overheating of the high-pressure pipe, it is also necessary to check whether there are oil stains under the air conditioning compressor, if there is, it proves that the pressure limiting valve of the compressor has been destroyed by high pressure and needs to replace the compressor.

3. Touch the air conditioning pipe, the temperature of the high-pressure pipe is low, and the temperature of the low-pressure pipe is high. In this case, the compressor cannot effectively circulate the refrigerant, and the compressor may need to be replaced.

4. If the air conditioning and refrigeration system is started, the two electronic fans run at the same time. But if the air conditioning pump does not suction, it is likely that the car computer has burned through and can be repaired.