Every year more and more transportation is becoming more transport on our roads. A large car accumulation and hot sun rarely lead to the fact that the power unit begins to heat up. Modern vehicles are equipped with different sensors that allow you to control the engine robot and fuel consumption. The coolant temperature sensor (abbreviated DTP) is one of the most important elements and is designed to monitor the temperature of the motor and the notification of the car owner about it. The replacement of the DPT, as a rule, is carried out in the case of the exit of this part, or if the device begins to produce unreliable readings.

Dzhu where is and how it works

As a rule, the Dzh is directly near the thermostat housing. It is installed so that there is direct contact with the coolant, otherwise talking about the efficiency of the signal is meaningless. The principle of operation of the device is quite simple - the smaller the temperature of the engine, the greater the electrical resistance of the sensor, and, on the contrary, the larger the temperature, the smaller the resistance.

Dug, on what functions and processes affect sensor readings

Thanks to the signals from this electronic device, automatic commands are produced for the following systems:

• The process of enrichment of fuel.
• Ravering speed when starting.
• Recycling exhaust.
• Ignition angle.
• Turning on the cooling fan.
• Coupling of the hydrotransformer.
• Filter state.

Duh, signs of malfunction

The sensor malfunction can be diagnosed by its appearance - severe corrosion, leakage of coolant, cracks - the first signs of malfunction. However, sometimes the appearance of the Dzug is quite correct, and the engine operation is broken. In addition, there are a number of factors that lead to the idea that the sensor is not all right:

1. Noticeable increase in fuel consumption.
2. ECU issues a problem of troubleshooting.
3. The control lamp signals the overheating of the engine.
4. Unstable and stop of the power unit, difficulty of its launch at idle.

Duh is defective, the consequences of the operation of a faulty DPE

Many systems are based on Dzhtoch, so his incorrect work entails the wrong engine operation and the chain of incorrect actions of automation. Such problems can in short to deal with both separate parts and entire nodes.

How to check the dot multimeter

When checking using a multimeter, you must check the readings with the reference values \u200b\u200bfor a specific car model. When a short circuit is detected, contact failure or incorrect output, the device is replaced.

If the test detected the sensor performance, the normal response to temperature fluctuations, but the engine is functioning with the open circuit and does not pay attention to the signals from the sensor, the electronic control unit should be checked for problems.

Detaway Ways for performance

The following devices will help control over output parameters:

1. Voltmeter with electronic type scale.
2. Digital type oscilloscope with memorization function.

It is necessary to navigate the value of 3 V. When warming up the engine and increasing the temperature, the voltage will decrease to 1.3-0.5 V. Exit to these values \u200b\u200bon the oscilloscope should occur after 5 minutes.

If testers show a voltage less than 5 V, this indicates a short circuit or loss of reference voltage. Some sensors are equipped with an option maximum / minimum. When testing them, there will be sharp voltage jumps in conditions of increasing temperature. On the obtained information of the oscillograms of the break in the circuit will be in the form of an increase in voltage up to 5 V, and the short-circuit moments are denoted by its drop to zero.

If the output parameters of the DVT correspond to the norm, but the temperature in the system does not correspond to the operating mode, the cause of the breakage, as a rule, lies in the thermostat, the circuit of which retains the open position, and the refogen does not heat up to the temperature installed by the manufacturer.

Dug, how to choose a new temperature sensor, species of sensors

Most Duz are thermistors that are capable of changing the resistance during a change in the coolant temperature. This is, as a rule, thermistors with a negative temperature coefficient of resistance, where the resistance during the cold engine increases, and when the temperature decreases. As the motor warmed, the internal resistance of the sensor decreases until the minimum will be achieved, and the power unit begins to operate under normal temperatures.

For example, the usual temperature sensor General Motors has a resistance of ten thousand ohms at the thirty-two degrees of Fahrenheit and drops to two hundred ohm when the motor is heated (two hundred degrees). For comparison, exactly the same sensor created by the Ford brand can have 95 thousand Ohm at 32 * and at 200 * to fall up to 2300 ohms.

Regulatory resistance is different for different cars, so one can change each DPT, the testimony of which does not correspond to the norm. All temperature sensors have two wires - return and input. The electronic control unit sends the DTP voltage signal to five volts. The temperature sensor resistance reduces the signal and sends it back. The electronic unit calculates the temperature of the coolant based on the reference voltage value according to the return communication signal. The temperature of the coolant is displayed on the scanner, on the instrument panel, as well as on the driver's information screen.

Sometimes the DV with dual function is used. If the coolant temperature reaches a certain level, the electronic unit changes the sensor voltage value to issue more accurate readings (high resolution).

On older models of transport, other types of Dzhu are used. Basically, these are temperature sensors with a two-position switch, which is closed and open at a certain temperature. This sensor is either directly connected to the relay to turn off and turn on the cooling fan, or sends a signal to the instrument panel, which entails the lighting of the signal lamp. Such sensors are mostly single-wire, send signals to the measuring device on the instrument panel.

Dug sensor, sensor replacement with his own hands, step by step

Replacing the sensor should occur in this way:

1. We merge part of the coolant and follow the level of its level above the sensor.
2. For convenience, dismantle the air filter.
3. Then dismantle the rubber cover from the device, and it is necessary to remember the position of the sensor marking.
   
4. Using the key to "21" unscrew the device.
5. We put a new device in place for the previous one, however, do not forget about the marking position.
6. After installing a new component, check the cooling system. The air should not be in it, otherwise, the operation of the motor will be broken and it will often overheat.

TECHNY PROF: Changing Duh, replace the cooling fluid

Simultaneously with the replacement of the DTP, the coolant is rarely carried out. The term of its work is usually 3-5 years. Pollution dissolved in it can distort the transmitted information, as well as reduce the efficiency of the entire system. Before screwing the threads, it is customary to lubricate the sealant. After replacing, do not forget to pour a new coach.

How to find the right sensors to find the right sensors and order at a table price with free shipping

On AliexpressAs a rule, you can find any product. The main thing here is to be able to search.

• To begin with registration.
  
• In your profile, fill in the shipping address so that in the future it is not to return to it.
  
• Among the categories offered to the left, they choose the category "Avtomovari".
  
• Next, click on the "Cars and Motorcycles" icon.
  
• Then choose the category "Spare parts for cars".
  
• Now on the left side of the page click on the "Sensors" link.
  
• As you can see, a lot of results. There are oxygen sensors, and temperature sensors, and air flow sensors, and oil pressure sensors, and many others.
• To make it easier to find the desired product, we enter the full name of the product in the search string, for example, the coolant temperature sensor.
  
• Choose goods with free shipping.
  
• We choose the sort of goods by the seller's rating.
  
• When the desired product is found, select the quantity and color, then click "buy now."
  
• We pay for the order.

How to find an inexpensive shockproof phone with free shipping on Aliexpress

• We register.
  
• Fill the shipping address.
  
• In the search bar, we enter keywords, that is, a shockproof phone. It is better to enter in English - ShockProof Phone.
  
• We put a tick opposite free shipping.
  
• We choose the sorting of goods at a price.
  
• Do not forget to pay attention to the rating of the seller and reviews.
  
• On the product description page, choose color and quantity.
  
• Next, click "Buy Now."
  
• We pay the goods by any of the proposed methods.

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