ECU VAZ 21099 injector where is it located

Hello everyone, guys, since the car has been sitting in the garage for a week now and is waiting for paint on the peeling doors, I decided to write an article on how to do computer diagnostics of a VAZ 2109-99 on injection engines from 2001 with GM brains, January 4.1 (essentially GM and January 4.0/ 4.1 is the same thing), Bosch 1.5.4M, January 5.1 (the only difference between these brains is that January 5.1 is more dynamic ECUs, you can also independently configure and flash them without “surgical intervention”) because there was nothing else worthwhile on these machines I’ve been thinking about replacing my “brains” with Bosch 1.5.4 for January for a long time now. in my case, I will talk about the Bosch 1.5.4M ECU and January 5.1. I won’t talk about GM brains and January 4.1 since I haven’t encountered them and there aren’t that many cars with such ECUs anymore; they are mostly replaced with Bosch 1.5.4 or January 5.1. I want to say right away that the ECU will be marked 2111 (that is, 8 valve engine) as far as I know on chisels with the difference in markings in this case: BOSH M1.5.4 (2111-1411020) January 5.1.1 (2111-1411020-71) January 4.1 (2111-1411020-22) GM ISFI-2S (2111-1411020-10 (20, 21))

BOSH M1.5.4N (2111-1411020-60)

January 5.1 (2111-1411020-61)

VS 5.1 (2111-1411020-62) BOSH M1.5.4 (2111-1411020-70)

VS 5.1 (2111-1411020-72) ECU data is almost identical, differences in sensors, tuning options and R-83 standard (Euro 2 emissions standard) about the BOSH MP7.0H ECU (2111-1411020-40). I won’t tell you because they left later. and since we will connect to the computer from your Laptop, tablet, etc., we will need: the device itself from which we will look at the readings (smartphone, tablet, laptop, computer, it doesn’t matter) a special diagnostic cord (or just a bluetoch or wi-fi diagnostic adapter) Software for your device. in my case, this is a Laptop with Windows 10 Home, Vag-com KKL 409 diagnostic cord and OpenDiag 1.4 free software. (attention, these instructions are for a high panel) on the right side of the passenger, below the panel, you will find a diagnostic connector (in this case, GM12, I suggest throwing it out right away and not cutting the wires and buying an adapter, but buying an OBD II connector and installing it so that it is no longer possible bother) further, so as not to describe where, how and what to connect, I will attach a photo taken from the Internet for a detailed connection: we go into the car, look for the diagnostic block and hook up our wiring: Contact A - MOUNT (-) (black wire) Contact H - PLUS ( +) (yellow wire) Contact M - K-line (blue wire):

Where is the fuel pump located on the VAZ-21099 injector

Removing and installing a gasoline pump (PG) is not a difficult job and does not require extensive plumbing experience or high qualifications. But if you don’t have to look for a fuel pump on carburetor cars for a long time (it is located on the engine, under the hood), then a beginner may not find it on the injector on the first try. Where is the fuel pump located on the VAZ-21099 sedan injector? Let's figure it out step by step:

we move the front seats in the car forward as much as possible to free up space in the rear;
open the rear left door of the car, find a small hinge on the rear sofa, which is located at the junction of the “seats” approximately in the middle of the cabin;
pull the loop up, thereby raising the back of the lower seat;
under the carpet we see the gas tank flap;
unscrew the two fastening screws, remove the hatch and find the fuel pump underneath.

Where is the fan relay VAZ-21099 injector

Quite often a problem arises with the Ninety-Nine when the engine fan does not turn on and the coolant begins to boil. If such a malfunction occurs, first of all they check the functionality of the fan itself by applying voltage directly to it from the battery, but there may be other problems.

In order to check the entire circuit, it is important to find where the VAZ-21099 injector fan relay is located, since it is responsible for turning on the airflow. We find this part in the front of the car, on the passenger side, it is installed under the glove compartment, at the passenger’s feet.

The required relay in the picture is indicated by an orange circle, and here you will also find a fuse that blows when the cooling fan is short-circuited.

The engine will not start

It is noted that the VAZ 21093 injector, the electrical circuit includes a lot of electronics. Due to its failure, the car may not start only if the DPKV fails. In other cases, the motor will work, but there will be various malfunctions, the causes of which should be sought. If the sensor is working properly, then you should use the classic method of troubleshooting in equipment - there is nothing to burn or nothing to set on fire.

In this case, first of all, the starting system is checked, the serviceability of the spark plugs and then the fuel supply. Details about step-by-step checking of the serviceability of vehicle components are written in the operating manual.

Where is the mass of the VAZ-21099 injector (main)

If the starter turns weakly, or the engine does not start at all (clicks occur when starting), various electrical problems arise, it is likely that the car does not have normal weight. Fixing such a problem is generally not difficult, but to do this you still need to know where the mass of the VAZ-21099 injector is located.

The main mass (thick) wire goes from the negative terminal of the battery to the engine, the thinner wire is connected to the car body, all energy consumers in the car depend on this connection. If the contact is poor, the battery stops charging normally; in order for the starter to turn well, you should check the reliability of these contacts and clean the metal from oxidation. If, due to a heavy load (for example, when installing additional equipment), the ground wire heats up and there is clearly not enough of it, you can “lay” additional ground almost anywhere where good contact between the engine and the body is ensured. The main thing is that this wire has a sufficient cross-section.

Read also: Volkswagen Vento heater does not work

Trouble-shooting

Regardless of its own condition and the weather outside, the VAZ 21099 car may suddenly stop starting, practically not respond to the gas pedal, etc. In this case, the on-board computer behaves as usual and does not show any errors. Of course, you can continue to ignore the situation, but this is unlikely to lead to good things. It is imperative to look for a breakdown in the injector, because the road almost never forgives such carelessness. An unpredictable mechanism can stall at the most inopportune moment.

Most often, the breakdown affects injectors that become clogged from constant use.

As a result, the car may begin to consume several times more fuel, and its traction will decrease significantly.

It is quite possible to clean the injectors yourself, but only if the car owner is confident in his own abilities. Otherwise, you can make the situation even worse.

If problems arise, you should also pay attention to the throttle valve, which over time becomes overgrown with black soot. As a result, it begins to significantly inhibit the penetration of air, but this problem can easily be eliminated with the help of a cloth and a special spray.

In order for your car to operate flawlessly for many years, it is important to fulfill the following requirements:

The VAZ engine is quite durable and can withstand significant loads. However, there is a limit to its performance.

Where is the starter relay located?

Just like the engine cooling fan, the starter is controlled by a relay, and its malfunction can cause problems:

when you turn the ignition key, nothing happens, the engine does not show any signs of life;
When I try to start the engine, clicks are heard, but the starter does not crank.

Finding out where the starter relay is located on a VAZ-21099i car is very simple; to do this, you just need to open the hood of the car and look behind the air pipe of the injection engine; the part you are looking for is shown below in the picture.

Installation of gas equipment

HBO by car

Installation of LPG on a VAZ is possible due to the presence of injectors. Some people install gas equipment without thinking about whether it is really necessary. In fact, HBO is a wonderful addition for VAZ, but it also has its drawbacks.

Installing an LPG does not make sense if the driver does not travel very far, because the main advantage of this equipment is savings when traveling long distances. For example, if a car travels 100 km a day, then installing LPG will reduce fuel costs by almost 2 times, but if the mileage is 20 km a day, then there will not be much savings.

The main disadvantages of HBO for the car and its owner are the following:

loss of dynamics;
decent cost of equipment installation;
complication of the fuel supply system (as a result - more breakdowns);
weighting the car.

However, it is necessary to note some advantages of HBO.

Reducing the likelihood of detonation. No matter how strange it may sound, it is true. Gasoline is more likely to ignite than gas.
Less harmful emissions.

If after installing the LPG the car jerks strongly, contact a specialist immediately! This behavior of the car can be a sign of many serious problems.

Where is the temperature sensor located?

If the temperature sensor does not show on the instrument panel, there is a high risk of overheating the engine, since the instrument panel does not inform the driver about the heating of the internal combustion engine coolant. Of course, the instrument panel or electrical wiring may be faulty, but most often the temperature sensor (DTOZH) on the engine itself refuses to work.

Where is the temperature sensor located on an injection car 099? Of course, you need to look for it in the engine compartment:

open the hood;
we find the wiring that is located between the rear of the engine valve cover and the air filter housing;
where the DTOZH is located can be seen in more detail in the following photos.

Content

The injector is controlled by electrical signals that come from a microprocessor

, and in order to issue them, he monitors signals from sensors installed on and in the engine.

The only work that can be done on an injection engine to adjust it and stabilize its operation is flushing the injector, or rather flushing the injectors.

Where is the speed sensor located?

The speed sensor (DS) on front-wheel drive VAZ cars reads pulses depending on wheel speed and transmits the data to the electronic control unit (ECU). When braking the engine, the fuel supply is turned off with the help of the diesel engine and the computer, thus achieving more economical operation of the internal combustion engine. If the sensor is faulty, an error code is recorded, gasoline consumption increases slightly, and idle speed decreases, especially during heavy braking. It is difficult to immediately detect where the speed sensor is located, since it is hidden under the air filter housing (AFC).

We find the part we need as follows:

open the hood of the car;
Using a 10mm wrench, unscrew the two KVF fastening bolts;
loosen the clamp of the air “corrugation”, disconnect the “chip” with the wires;
we take out the KVF, now the sensor has already appeared in the field of view, it is located on the gearbox (gearbox) housing, wires are connected to it, connected using a connector.

The DS can be easily unscrewed by hand, and the plug with wires can be pulled out even after the sensor has been unscrewed (but carefully so as not to damage the wiring during rotation).

Repair

Repair of the power unit is carried out with your own hands. As practice shows, most car enthusiasts carry out this process in their garage. Elements such as the thermostat, water pump, spark plugs and high-voltage wires can be changed without problems. As for the injectors, to clean them you will need a special stand, which is available at car services.

To reduce fuel consumption, you can flash the engine control unit. This is what motorists do. This operation can only be performed independently, but it is recommended to contact professionals who understand the process and also carry out additional adjustments.

Carrying out a major overhaul will require some design knowledge and engine repair skills. So, to grind the plane of the block and head, you will need a surface grinding machine. Also, for boring cylinders, a boring and honing stand is required. All other operations are performed by hand.

Where is the fuel filter located?

The fuel filter (TF) on the VAZ-21099i is designed to clean gasoline from debris, dirt and various impurities; it is a monolithic structure with a rigid metal body and a filter element inside. The frequency of its replacement is every 20-30 thousand km of the distance traveled, also if the car begins to move jerkily, and diagnostics showed that the fuel pump is clogged.

It’s easy to find out where the fuel filter is located; to do this, you need to install the car on an inspection hole or a car lift. The TF is located on the bottom of the body, next to the rear beam and the gas tank, and is secured with a special clamp, which is tightened with a bolt and nut.

Diagram of the power supply system for injection engines of VAZ 2108i, 2109i, 21099i (EURO-2) cars

The power supply system for injection engines of VAZ 2108i, 2109i, 21099i cars is designed to ensure an uninterrupted supply of fuel to the engine cylinders. In addition, it has the functions of storing a certain supply of fuel on board the vehicle and cleaning it from mechanical contamination.

diagram of the power supply system for the injection engine of VAZ 2108, 2109, 21099 cars (EURO-2 toxicity standards)

Elements of the power supply system for injection engines of VAZ 2108i, 2109i, 21099i cars

— The fuel tank is welded, welded from two stamped halves. Capacity 43 liters. The filler neck is located in the right rear fender of the car.

— The fuel module (electric fuel pump) is installed in the fuel tank and combines a fuel pump and a fuel level indicator sensor. To access the module, there is an inspection hatch under the rear seat in the car body. A fuel purification strainer is installed on the inlet pipe of the fuel module.

— fuel filter in a metal casing, not dismountable, is installed under the bottom of the car, next to the fuel tank.

— The fuel rail supplies fuel from the supply line to the four injectors inserted into it. The connection between the ramp and the injectors is sealed with rubber rings. At the end of the ramp there is a diagnostic fitting for measuring pressure in the system.

— An injector is an electromagnetic valve that allows fuel to flow into the cylinders when voltage is applied to it and closes when there is no power under the action of a return spring. At the end of the injector there is a nozzle through which fuel is injected into the intake manifold. The injection system controller controls the injectors.

— Fuel pressure regulator – bypass valve installed on the fuel rail. It maintains the required operating pressure in the fuel line (around 3 atmospheres). And it changes depending on the engine speed. Excess fuel is discharged back into the fuel tank via the return line.

— Separator – element of the fuel vapor recovery system (under EURO 2). Fixed under the rear right fender of the car. In it, gasoline vapors condense and return back to the fuel tank. Fuel vapors that have not had time to condense enter from the separator into the adsorber.

— Adsorber - a container (element of the fuel vapor recovery system), where fuel vapors coming from the separator are absorbed by activated carbon. When the engine crankshaft speed increases, the control unit gives a command to open the canister purge valve and gasoline vapors are sucked into the intake module receiver. Installed in the engine compartment.

— The gravity valve prevents fuel from leaking out of the fuel tank when the vehicle turns over.

— A two-way valve prevents excessive increase or vice versa decrease in pressure in the fuel tank.

Notes and additions

— Elements of the fuel vapor recovery system (separator, adsorber) are available only on VAZ 2108i, 2109i, 21099i vehicles that comply with EURO 2 standards.

Injector for VAZ 21099 - all the features of the device