On-board computer Nissan X Trail T30. Self-diagnostics Nissan X-Trail and self-diagnostic error codes on Nisan X-Trail

Useful settings for owners X-Trail T-31

Good day!
This topic took from classmates X-Trail Club www.odnoklassniki.ru/group/52038881837067
I think it will be interesting to the owners of Nissan X-Trail.
1. Mode "Conduct me to home ..."
It is implemented as follows: After turning off the ignition, the "blink" with distant light, and then after setting a car to protect the car carries you by light headlights within 30 seconds.
On each "blink", the lighting time increases by 30s. You can set up to 2 minutes.

2. Automatic door lock when driving.
Turn on the ignition, click the closing button of the central lock and keep it a few seconds before the silk.
Now every time you sit down in the car and start moving, the central locking will turn the machine itself when the speed is 15-20 km / h.

3. The function of the selective door unlock mode.
At the same time, press and hold (about 5 seconds) lock and unlock doors on the ignition key. Similar actions lead to the disconnection of this mode.
Now, with a single click on the unlocking door, only the driver's door and the fuel tank hatch will open. With repeatedly pressing all doors will be unlocked.

4. Function of the selective door unlock mode with "Intellegent Key".
At the same time, press and hold (about 10 seconds) lock buttons and unlock doors on the ignition key. Within 3 seconds, press the lock switch on the driver's door. Similar actions lead to the disconnection of this mode.

5. In the version with the upper "chandelier" very uncomfortable to blink, but if it is forced to close this button (inclusions of the chandelier), for example, for example, to the state when it is as if it is pressed, you can blink with all your light at any time ... the main thing is not To be carried away, because Light really a lot

6. In the cooling cup holders (which on the left and right) have a small niche specifically designed for traffic jams (so as not to lose it)))

7. If you fold the mirror on the running machine, then turn off completely ignition and for some time just press the mirror button immediately, then nothing happens :-) You can go out, put on the signalku and stump home.
But then, immediately, when you turn on the ignition, the mirror opens themselves!
The mirrors also, then open if on the machine off the machine to push them into manual.

8. The window is closed - hold and lower the glass to the bottom of the Niza - do not let go of the SECONDS 5 - Immediately I do not leave the summing - the glass closed - they also keep the key seconds 5 ... should then work the car to work, from one keystroke ...
Or so - when they wriggled glass - not necessarily another 5 seconds to keep the key. The procedure is this: I lower the glass down to full, then raise the glass completely and do not let the key approximately seconds 5. All the product is done accordingly when the ignition is turned on.

After purchasing your Nisan X-Trial, I began to slowly study the features of the machine with taking into account the fact that the Muyi knowledge in the repair of cars was reduced to zero. But multiple forums and discussions on slight faults were very well helped in the study of this case.

Today I would like to consider the issue how to make self-diagnostics on Nissan X-Trail With the analysis of error codes that can be identified during self-diagnosis and ultimately determine the problem of a car unit.

• After warming up, drag the motor and completely turn the key to the "off" position and wait a little more than 10 seconds.
• Next, turn the key to the ON position, but we immediately do not try to start the car, we are waiting for 3-4 seconds.
• In the next five seconds, quickly and until the stop click and let go of the gas pedal, doing it 5 times in a row.
• Having done a gas surgery, counting for another 7 seconds and click on the focus of gas at the same time it is holding it before igniting the yellow light bulb "Check", which will flash and you can count your Nissan X-Trial error codes.
• After reading codes, the machine can be started.

How to count the codes of self-diagnosis on the Nissan lawsuit trial?

The transition to self-diagnosis is denoted by flashing the check lamp. To read the codes during self-diagnostics, you need to release the gas pedal during the start of the lamp flashes. If in the car there are both errors, then the codes will be highlighted consistently, and if everything is fine, the light bulb should blink exactly 40 times in one mode, i.e. without pauses.

How to produce an oxygen sensor test on Nissan X-Trial?

It is after the diagnosis with their own hands and the start of the engine can be tested for an oxygen sensor. More precisely, we warm up the engine, turn off all the additional devices (music, light, etc.), catch up with turns up to 2000 and keep 2 minutes over 2 minutes. At the same time, it is necessary to make sure that the Check light is in your three of them. Promits over 10 seconds more than five times for 2000 revolutions.

How to reset error codes after self-diagnosis on Nissan X-Tial yourself?

To drop errors after you believed them, you need to press the gas pedal on the unused car and hold the engine for a few seconds and then start the engine. But such a way does not solve your problem, because This is a temporary solution to the problem and after identifying the cause of the fault itself it must be eliminated that the computer no longer show one or another error.

Table: Self-diagnostic error codes Nissan X-Trail:

Nissan X-Trail T31. Signs of engine valves

Signs of the running valve can be called engine trimming, smoke from a breather (Sapun - valve for ventilation of the crankcase and exhaust exhaust pressure) and during long-term operation of the engine with a boosal valve - an increase in fuel consumption. Explain the people's concept "Troit Motor". This means a malfunction of one cylinder, which is manifested in the loss of power and pickup, the appearance of vibration and shots in the exhaust pipe. But the indicated signs of the burned valve are ambiguous. The engine can also trim due to non-working candles or a weak spark. Smoke from the Sapuna can also be damaged by the piston. But here there is a distinctive feature - the color of smoke must be SIZ, and the candle is covered with oil, which is associated with the piston breakdown. In the case of a slot, the candle remains dry. Note that, the rotten valve in the carburetor engine and in the injector gives the same symptoms, because The difference is only in the fuel injection system.

Valve's squeak is a common problem of gasoline and diesel engines. This malfunction occurs both on relatively "fresh" engines and on power units with impressive mileage. At the initial stage, it is extremely important to accurately determine the nature of the malfunction, since the further operation of the engine with the mark of the valves greatly aggravates the consequences of such a breakdown and leads to expensive repairs.

Causes of progress valve

Valve's squeak arises for various reasons. For motors, which suggest the need to periodically adjust the valves, the valve warfare often occurs due to late adjustment of the thermal clearance of the valves. On the engines with automatic adjustment of the specified gap, the failure of the hydrocomathers also often leads to the fact that the valve is roasting.

The main causes of the engine valves are:

Valves are strongly clamped;
-Tell guide sleeve valve;
-In the rod of the valve itself;
The engine operates on a depleted mixture (especially in the presence of HBO);

The consequences of riding with the burned valve are different, ranging from an increased fuel consumption and ending with the valve seat burnout. In some cases, the burned valve saddle leads to the need to repair the saddle or even complete replacement of the head of the cylinder block.
The burned valve can be collapsed at one moment, after which the valve fragments fall into the engine cylinder. As a result, serious damage to the piston may occur, clerk or BC defects. In the latter case, there is a risk that a large piece of the burned valve will break the engine cylinder block, which is the actual dissemination of not only the head of the block and the piston group, but also the cylinder block. In such a situation, the long-term operation of the motor with a running valve can lead to the need to replace the entire engine.

Signs of running valve

The main feature of the valve progress is noticeable engine trimming in different modes of its operation. Also, in the case of a boosal valve, the engine strongly loses its power, the fuel consumption increases significantly. A certain complexity of the diagnosis of burned valves without disassembling the engine and the removal of the GBC is that the motor can trigger for various reasons:

CPG wear, decreased compression in cylinders;
-Blences with spark plugs, malfunctions of high-voltage wires, etc.;
-Hellats in the engine power system, malfunction of injection injectors;

What to do if the valve burned?

In the case of the burned valves, the repairs consist not only in their replacement, but also in clarifying the reason for the progress. Therefore, check the ignition and cooling systems. If you replaced and started one valve, do not take a post of time and touch the rest. You can replace the valve not only per service station, but also in the garage if you are familiar with the basics of repair. Thus, the valve is an important part of the engine, so to protect yourself from repairing better to carry out regulatory work on time.

Determination of the valve progress without removing the block head

First of all, it is necessary to determine the non-working cylinder. Methods for checking largely resemble the diagnosis of faulty spark plugs. To check the engine should be started, after which, when the engine running at idle turns will be required to remove the caps with the spark plugs.

After removing each candle cap, it is necessary to closely monitor the turns of the idling and the overall stability of the engine. If the motor started to trim more or sneeze, then the cylinder from which the cap was removed is a worker. In the event that, after removing the cap, the operation of the engine does not change or turns slightly, then the problem cylinder is detected.
Then you need to unscrew the spark plug on the non-working cylinder and replace it with an obviously good, as well as check the high-voltage armored barrier of this cylinder for performance. It is also not superfluous will be checking the ignition coil, etc. The subsequent start of the engine will show whether the problem lies in the elements of the car ignition system or further diagnostics are necessary.

If the nature of the motor operation after installing the working candle, replacing the high-voltage wire and checking other components of the ignition system will not change (the engine continues to trim), then the likelihood of more serious damage is high:

The warp valve warfare;
-Heravery CPG;

The mark of the valves means that the cylinder decreases compression due to the tightness of the combustion chamber (looseness during the adjunctness of the intake or exhaust valve, the destruction of the plate and / or valve seat). The wear of the cylinder-piston group and the piston breakdown also lead to the fact that low compression will be in the problem cylinder. Also, the cylinder may not work because of the occurrence or breakdown of piston rings.

Now it is necessary to localize a malfunction, that is, to accurately determine the mark of the valve or identify problems with the CPG. The most common way to determine the burned valves is the measurement of compression in the cylinders.
Low compression explicitly indicates a malfunction, while one nuance should be taken into account. Set the valve slot and exclude CPG problems only in the compression indicator will not work. The fact is that the engine compression may decline both as a result of the burned valve and due to breakage of the piston rings, as well as a number of other defects. For this reason, parallel to the compression measurement should be carried out additional diagnostics of the engine.

The simplest way to determine the valve progress after you measured compression in the cylinders, is the fill of several "cubes" of engine oil through a candle well. The compression must be measured again. Raising compression in the cylinder after oil pouring will indicate that an oil film has been formed, which plays the role of the "seal". Such a phenomenon is characteristic of the wear of the piston. If the compression indicator has not changed, it means there is a valve idle, since the oil in the cylinder does not affect compression in this case.
Also, to determine the valve progress, it is necessary to inspect the ignition candle on the problem cylinder. The explicit sign of the valve slope is the fact that the spark plug will be completely dry, that is, does not have a characteristic oil fly. Also from the engine sapuna can go smoke or air. The intensity of the appearance of smoke directly depends on the degree of wear of the CPG.
As for the breakdowns that are associated with the piston, the candle in this case is covered with oil, the appearance of a sizogue smoke can be observed from the Sapuna. Note that the oil on the candle is an indirect sign. Even if the ignition candle is dry or covered with a small nagar, but the smoke goes out of the Sapuna, then the specified feature indicates problems with piston or piston rings. On new motors with a slight mileage, the likelihood of the fact that the piston rings lay down.

We add that the appearance of engine oil, which goes through the Sapun, also indicates a malfunction of partitions between piston rings. Taking into account the above, it is possible to accurately determine why the compression in the engine has decreased, identify problems with the cylindrophneum group or determine the mark of the timing valve.

The consequences of the valve progress
If the burned valve is not changed for a long time, but the first fuel will drive the first, since the engine does not give out its normal power, and the worst thing will begin to burn out the valve seat, the valve seat can be burned very strongly, which will have to change the head, or drive the head In a specialized workshop for replacing the valve seat. Rarely, but it may be so, a piece of the valve is chipped and falls into the cylinder, if a big piece then the Hana piston and beat the head, if a small piece, then break the head and piston. I saw the engine when the valve's hat flew off and broke the piston, the head (this is half a womb) but also pierced the cylinder in the block of the Vazovsky engine (Khan engine) due to the defective new valve.

The valve burns from different reasons, the valve was clamped, a very poor mixture of fuel (especially if the engine runs on gas), large wear of the valve sleeve guide (the valve is very dangling in the guide sleeve), or wear the valve rod itself (abrasion of the valve rod).

If you go to gas, then preferably every 10 thousand kilometers adjust the valve, the gas burns very much valve, especially if the gas supply is very poorly configured. I noticed when adjusting the valves, those machines that ride the gas almost always the exhaust valves are slightly fit (not yet clamped, but the probe no longer), and it is worth starting the adjustment of the valves as the valve and progrit will be loaded. And those machines that go on gasoline are less susceptible to the valve direct.

Do not try to dinner gas flow trying to save, because of the poor mixture, the engine loses power and on the contrary there is a gas overflow, since it is necessary to put pressure on the gas pedal, plus the valves and valve seats are burning out. When the gas is configured correctly, the engine power grows and does not feel the difference when driving on gasoline or gas. But do not forget to regulate the valves when driving on gas. Usually come to adjust the valve when the valve noise appeared, but it will be suitable for those who drive on gasoline, when driving on gas, do not wait for the noise of valves, most likely it will not appear, and the valve will be lit and proceed.