DTOZH Renault Duster: Location, Faults, Check, Replacement

The Renault Duster car is widely distributed in the CIS countries due to its inexpensive price and all-wheel drive, as you know, the roads in Russia and neighboring countries leave much to be desired, and the Duster copes with the task of overcoming those paths - wonderful.

Duster is equipped with many different sensors that are involved in the operation of the engine. One of the main sensors is the coolant temperature sensor. This part is common to all cars and is involved in many processes necessary for the operation of a car engine.

This article will focus on the Renault Duster coolant temperature sensor, that is, its purpose, location, signs of malfunction, verification and, of course, replacing the part with a new one.

appointment

The coolant temperature sensor is required to detect the coolant temperature. This setting allows the engine cooling fan to turn on automatically in time to help prevent engine overheating. Also, based on antifreeze temperature data, the engine control unit can adjust the fuel mixture, making it richer or leaner.

For example, when starting the engine in cold weather, you can notice an increase in idle speed, this is due to the fact that the sensor transmitted readings about the antifreeze temperature to the computer and the engine block, based on these parameters, corrected the fuel mixture necessary to warm up the engine.

The sensor itself does not work on the principle of a thermometer, but on the principle of a thermistor, that is, the sensor transmits readings not in degrees, but in resistance (in ohms), that is, the resistance of the sensor depends on its temperature, the lower the temperature of the coolant, the higher its resistance and vice versa .

The table of resistance changes depending on temperature is used to independently check the sensor in one of the popular ways.

Location

Since DTOZH must have direct contact with antifreeze and measure its temperature, it must be located in places where the coolant temperature is highest, that is, at the outlet of the engine cooling jacket.

On Renault Duster, you can find the coolant temperature sensor by removing the air filter housing and only after that the DTOZH will be available for viewing. It is screwed into the cylinder head through a threaded connection.

Symptoms of a malfunction

In case of malfunctions associated with the temperature sensor on the Renault Duster, the following malfunctions are observed in the operation of the car:

1. The instrument panel incorrectly displays the temperature of the coolant;
2. The ICE cooling fan does not turn on or turns on prematurely;
3. The engine does not start well after being idle, especially in cold weather;
4. After warming up, the internal combustion engine smokes black smoke;
5. Increased fuel consumption in the car;
6. Reduced traction and vehicle dynamics.

If such malfunctions appear on your car, you need to check the DTOZH.

inspection

DTOZH is checked by computer diagnostics at the service station, and the cost of the service depends on various factors and the “arrogance” of the service station itself. The average cost of car diagnostics starts from 1500 rubles, which is proportional to the cost of two sensors.

In order not to spend such an amount on car diagnostics at a service station, you can buy an OBD2 car scanner from ELM327, which will allow you to scan the car for errors using a smartphone, but it is worth remembering that ELM327 does not have the full functionality of professional scanners used in car services.

You can check the sensor yourself, but only after disassembling it. This will require:

• Multimeter;
• Thermometer;
• Boiling water;
• Sensor.

Multimeter probes are connected to the sensor and the switch on the device is set to the resistance measurement parameter. Next, the sensor is placed in a glass of boiling water, in which the thermometer is located. After that, it is necessary to compare the temperature values ​​and the resistance readings and measure them with the standard. They should not differ or at least be close to the operating parameters.

Price

You can buy an original part at different prices, it all depends on the region of purchase, but many prefer analogues of the sensor, since the sensors on the market are very different.

Below is a table with the cost and item DTOZH.

Creator	Cost, rub.)	Supplier code
Renault (original)	750	226306024P
Stellox	280	0604009SX
light up	350	LS0998
ASSAM SA	320	30669
FAE	900	33724
Phoebe	1800	22261

As you can see, there are enough analogues of the original part to choose the appropriate option.

Replacement

To replace this part yourself, you do not need to have a higher education as a car mechanic. It is enough to prepare the tool and have the desire to fix the car yourself.

Attention! Work must be carried out with a cold engine to avoid burns.

1. Remove the air filter box;
2. Unscrew the expander plug;
3. Remove the sensor connector;
4. Prepare a new sensor for quick replacement;
5. We unscrew the old sensor and close the hole with a finger so that the liquid does not flow out;
6. Quickly install a new sensor and tighten it;
7. We clean the places of spilling antifreeze;
8. Add coolant.

The replacement process is complete.