In this article, we will tell you how to simply carry out independent computer diagnostics, as well as the accompanying car repair of VAZ (2105, 2107, 2108, 2109, 2110, 2112, 2114, 2115, prior, Kalina).
If the Check Engine Error (Check Engine) caught up on your car or you are worried about fuel consumption, read the article, we will teach the identification of similar implicit problems.
If you do not pull the engine, the failures appeared, or the car twisted, the problem may also be in the electronics of the car or sensors. Also, you should not chop off my shoulder and run into the car service, perhaps the problem is solved very simply, with minimal material costs. We read our article.
So, let's begin…
No car, especially the Russian car production is not insured against malfunctions. This most unpleasant in this situation is - if the problem is not explicitly character, such as faulty electronics or sensor. The first idea in such a situation is to immediately flee to the auto electrician, let him decide these over complicated, it would seem problems. But! ... Is it worth overpaying such money for the work with which any car enthusiast can cope at home, using a laptop or even with a mobile phone!?
Each injection car without exception has a diagnostic connector, VAZ cars after 2004, it looks like this (see photo). Most often the connector is located under the car's steering column.
In order to connect a car to a laptop, a special adapter is needed (see photo).
These adapter is inexpensive if you compare with the cost computer diagnostics Engine in car service. Order This adapter can be found at www.diagnost7.ru.
The adapter is suitable for all Russian cars without exception and even some foreign car car.
Complete with the adapter, programs are supplied for car diagnostics.
What are the possibilities of programs? What can be done with help this adapter?
Diagnostics:
Engine management system
Bosch M1.5.4 (R83), ITELM VS5.1 (R83), January 5.1 (R83),
Bosch M1.5.4 (Euro 2), ITELM VS5.1 (Euro 2), January 5.1 (Euro 2), January 7.2 (EURO 2),
Bosch M7.9.7 (Euro 2), Bosch M7.9.7 (EURO 3/4), ITELM / AVTEL M73,
Bosch MP7.0 (Euro 2), Bosch MP7.0 (Euro 3), Bosch Me17.9.7 (EURO 3), ITELM M74,
ITELM M75, ITELM M74CAN, ITELM M74CAN MAP
Automotive anti-theft system
Aps6, APS6.1
Electropocket module
Ep Priora, Ep Kalina Norma, Ep Kalina Suite, Ep Grant, Grant / Priora Device Combination
Electric power steering
Mando (Korea), Camz, Autoelectronics, Aircape, North / Daaz
Airbags
AUTOLIV ACU3 (Kalina, Priora), Takata (grant)
Anti-lock system
Bosch 5.3, Bosch 8.0, Bosch 8.1, Bosch 9.0, Bosch 9.0 CAN
Heater / Climate (Priora, Kalina, Grant)
Windscreen control unit (prior)
Automatic Jatco AY-K3
Connecting to the control unit (to the brains) of your freight. You can estimate the health of important car sensors, Lamd-probe (oxygen sensor), DMRV (sensor mass flow air), etc.
Video review work K-Line Vag adapter On the example of the VAZ 2110 2005 G.V. Made for site www.diagnost7.ru (here you can choose an adapter for your car):
Specify questions about the compatibility of this adapter with your car in the comments below, we will be happy to help you.
To find out the error codes on the VAZ 2110 and 2112 (8) 16 valves on their own, it is not enough to know how to use on-board computer and removable controllers. It is necessary to be able to decipher the indicators issued. Car diagnostics can be carried out at maintenance stations or at home, having appropriate equipment. Modern domestic cars Tools on an on-board computer (BC), which can produce errors in the display systems.
A more careful malfunctional analysis, without visiting a hundred, allows you to hold a removable controller. The need to check the vehicle occurs when the Check indicator is sunbathing.
Deciphering standard codes
Error codes for VAZ 2110 and 2112 (8) 16 valves, which produce the ECU of the models under consideration, are indicated by the letter "P" at the beginning and the subsequent set of numbers. Their decoding looks like this:
- 0030 - malfunction of the control circuit of the neutralizer and oxygen heater;
- 0031 - notifice about the closure of electrocups to the mass in the same node;
- 0032, 0036, 0037, 0038 - Control chains between the neutralizer and the oxygen heater sensor;
- 0102, 0118, 0122, 0123 - Faults in the refrigerant temperature indicator circuit associated with an increased, reduced signal, throttle problems;
- 0130, 0131, 0132 - 0133, 0134, 0136 - Problems in the sensor circuit of the section between the neutralizer and the supply of oxygen, indicating its inadequate operation or failure;
- 0137, 0138, 0140, 0141 - indicate a violation of the operation of the oxygen sensor on the area of \u200b\u200bthe chain located after the neutralizer.
- 0171, 0172 - Overweight or low fuel supply;
- 0201, 0202, 0203, 0204 - Open control chain on one of the nozzles;
- 0217 - exceeding the temperature regime of the power unit;
- 0230 - problems with the fuel pump relay;
- 0261, 0262, 0263,0264,0265,0266,0267,0268,0272 - Malfunctions related to drivers and short-circuit nozzles.
When signals appear on faults in the ignition system, the following codes are displayed:
- 0300, 0301, 0302, 0303, 0304 - Signal about malfunctions caused by;
- 0326, 0327, 0328 - Violations in the operation of the chain associated with the disorder of the signal supply or its absence;
- 0335, 0336, 0337, 0338, - testifies to failures in the work of the crankshaft chain or camshaft;
- 0342, 0343, 0346 - speaks of interruptions of the functioning of the chain of the phase indicator;
- 0351, 0352, 0353, 0354 - Problems with a ignition coil control;
- 0363 - signals a violation of fuel supply or ignition passage;
- 0422 - the maximum understated indicator of the neutralizer;
- 0441 - disorders of air output and gasoline vapor through adsorber;
- 0444, 0445 - Valve breakage of the adsorbing element;
- 0480, 0481 - Fan fault.
Other malfunctions
Car diagnostics makes it possible to decrypt malfunction codes in various nodes control relays, road relief sensors, saturation fuel mixes and some other indicators. The notation has the following numbering after "P":
- 0500, 0501, 0506, 0511 - Speed \u200b\u200bsensor problems and revolutions idle move;
- 0560, 0562, 0563 - Differs in voltage on-board network;
- 0615, 0616, 0617 - Problems with an additional starter relay;
- 0627, 0628, 0629 - Signal for faults of the gas station relay;
- 0645, 0646, 0647 - Displays the compressor coupling;
- 0685, 0686, 0687 - Circuit on the main relay chain;
- 0691, 0692 - Fault element fault;
- 1123, 1124, 1127, 1128 - non-adhesion of the mixture in idle mode;
- 1301, 1302, 1303, 1304 - Critical skipping ignition in cylinders;
- 1410, 1425, 1426 - problems in the valve circuit of the absorber purge;
- 1513, 1514 - breakage in the idle regulator circuit;
- 1602, 1606, 1616, 1617 - Violation of the testimony of the uneven road sensor;
- 2301, 2303, 2305, 2307 - Circuit on board the coils of the ignition of cylinders.
In the VAZ 2114 car, the manufacturer has installed a on-board computer, thanks to which you can learn about the presence of a malfunction and to eliminate it in a timely manner before the problem is aggravated. But the error display shows in the form of numbers - special codes that require decryption, because by themselves they do not make any sense.
Possible car malfunctions VAZ 2114, value and decryption of bort-computer error codes
You can select only 2 groups of errors, the codes of which displays the on-board computer VAZ 2114. Errors from the first group arise significantly more often than the others, so we give a few most common:
- "P1602" - an error code that signals the presence of problems with the engine controller. The computer display can quite often demonstrate this code, which indicates the need to replace the controller.
- The error "P0340" (or "Р0343") occurs when faults or full failure in the operation of the crankshaft position sensor.
- "P0217" signals the overheating of the car engine or the need to replace the engine oil.
This is not all the errors that occur during the operation of the VAZ 2114. The full list can be found in one of the files for diagnostics, and the list of the most common errors will be submitted later in this article.
Nuances of self-diagnostics VAZ 2114
When diagnosing a specialized service station and independently, various results and error codes can be obtained. Not all drivers know that it is possible to identify malfunctions without on-board computer. This uses odometer. A significant disadvantage of such diagnostics is the addition of error numbers in a single amount. For example, if an error 8 and 1 occurred, the odometer will display the number 9. The device memory is not automatically cleared, so error codes will be displayed to manual reset by disconnecting for several seconds of the battery terminals.
Reset "Checkengine" errors
As can be seen from the roller, the error can be reset, following the following steps:
- Loss the engine, but leave the ignition of the car.
- Disconnect the Akb auto terminal and wait a few seconds.
- Install the terminal back and start the engine.
Error after these action will be reset, but if it is caused by serious malfunctions in the engine, it will arise again. In this case the best option will contact a hundred.
Definition and decoding errors on VAZ 2114
Independent car diagnostics allows you to identify malfunctions, but some of them reveal it is extremely rare. For diagnostics use odometer.
Self-diagnosis of VAZ 2114.
The sequence of actions is as follows:
- Press and hold the odometer button and set the ignition key in the first position.
- Release the Odometer button and press again briefly. As a result, the firmware version will be displayed.
- Now, to see the error codes, you need to press again and release the odometer button.
Error codes have the form of numbers from 1 to 9 and double-digit numbers, unlike those that displays the on-board computer. Thus, it is possible to identify some car malfunctions using a odometer. The most common errors are displayed in the table below.
Vaz 2114 error table
| The code | Error description |
|---|---|
| 1 | Malfunctions in the microprocessor |
| 2 | Mallings with fuel level sensor |
| 4 | Excess allowable voltage in the power supply |
| 8 | Too low voltage Electrics |
| 13 | No signal from an oxygen sensor |
| 14 | Very high level of cooling fluid temperature sensor |
| 15 | Highly low level Cooling fluid temperature sensor signal |
| 16 | High voltage on the on-board network |
| 17 | Low voltage in the on-board network |
| 19 | Problems with the crankshaft position sensor signal |
| 24 | Malfunctions in the speed sensor |
| 41 | Incorrect Signals Phase Sensor |
| 51, 52 | MACHINES WITH ROM and RAM device, respectively |
| 53 | SO-potentiometer does not work |
| 61 | Problems with a lambda probe sensor |
Diagnostics of faults using special equipment
To identify malfunctions to a hundred usually use the on-board computer of the car and laptop with specialized applications. In this case, it is possible to obtain error codes that correspond to various problems. The most common of them are shown in the table.
| The code | Error description |
|---|---|
| Р0102, Р0103 | The mass flow sensor sends an incorrect signal. |
| R0122, R0123. | Sensor throttle valve Provides incorrect information. |
| R0130-R0134. | The presence of a malfunction in the oxygen sensor or the electrical wiring damage connecting it with the system. |
| Р0201-Р0204. | Clogging or closing the nozzles or opening the electrical wiring of their sensor. |
| Р0300 | Ignition problems (skip). |
| Р0335, Р0336. | The detonation sensor works incorrectly. |
| Р0351, Р0352. | Ignition coils function incorrectly. When displaying such error codes, the engine can "trim". This problem may also signal errors P2301 and P2304. |
| Р0480 | The cooling fan does not function. |
| Р0505, Р0506, Р0507 | The idling sensor is defective. |
| P1602. | The power supply power supply is missing (the most common error). |
| P1689. | Faults in the work of the onboard computer. Note, because in this case it gives the wrong error codes. |
If there are errors with other codes, you should familiarize yourself with the information about them in the file, which is included with the application to diagnose the car, or search the Internet.
The controller clears the memory after turning off the engine along with the ignition and disconnect power from the battery for 10-15 seconds. In this way, you can determine after repair, whether a malfunction was eliminated.
Errors in VAZ 2114 often occur, so they will not be superfluous to carry out the proper repair of the car. For proper diagnostics, you will need a computer with a special program and understanding of the screening of the onboard computer.
From the conveyor of the Togliatti plant, AvtoVAZ moves several options for Samara cars with VAZ-2111 engines. These engines are equipped with a multipoint distributed fuel injection system, which has several versions.
The first version of the system is the fruit of the joint work of AvtoVAZ and the American firm General Motors (GM), which is intended only for export. The car corresponds to the ecological standards of Euro-2, a neutralizer is installed on it, in the injection system there is a oxygen concentration sensor (DCC) installed in the flow of exhaust exhaust gases (VOG). But the engine should work only on unleaded gasoline, otherwise the named elements will fail. Accessories to such an injection system are supplied by GM.
The second option is intended for domestic market. His feature - the electronic unit Management (ECU) own development January-4, the components of the Russian system, there is no neutralizer and DCC in it, the use of eatelled gasoline is allowed. Details of the second variant of the system are produced by small parties at different domestic enterprises. Contact connectors of nodes and blocks in the systems of the first and second options are the same, some of them are interchangeable.
The third option has appeared thanks to cooperation with the German company Bosch. Engine 2111 added five "forces" - now it develops 57 kW (77 liters.) Power. A new intake manifold has been installed, and camshaft with more "wide" phases. Two control units were developed: a cheaper ECU-M1.5.4, which provides Euro-2 toxicity norms, and promising EBU-MR 7.0, which is more expensive, but it meets the stringent requirements of Euro-3. In the third version of the system, the contact connectors are original, and the system is not compatible with two first.
To determine what type of injection system is equipped with an engine of a particular car, it is possible for an inscription on the ECU, which contains the VAZ catalog number, name, serial number and the date of the block. ECU is also called the controller. Data for different types Controllers are shown in Table. 1-3.
ESAU-D controllers are running the program laid into the ECU storage device. Different versions of programs allow you to create modifications of controllers to work with different models Engines and ensure the implementation of various environmental norms.
Data on software versions (software) for ESAU-VAZ, its compliance with the type of controller and their interchangeability is given in Table. 4. The table of interchangeable blocks and programs is combined into groups.
Decryption of the designation for the development of VAZ
As an example, consider the designation: M1 V 13 O 54.First discharge
- Letter and figure (in example - M1) - denotes the type (family) of the controller:J4 - the family of control blocks January-4;
J5 - Family of control blocks January-5;
M1 - Bosch Control Blocks Family M1.5.4;
M7 - Bosch Control Blocks Family MR7.0 Motion.
Second discharge
- Letter (in Example - V) - denotes the type of car, the state of development or the cipher of the topic:V - all the front-wheel drive cars of the VAZ of the family 2108, 2110;
N - Family all-wheel drive models Car VAZ.
Third discharge
- Two digits (for example 13) - denotes the conditional number of the configuration (00 ... 99):03 - Euro-2 toxicity norms, engine 2111;
05 - Euro-2 toxicity standards, engine 2112;
07 - Russian toxicity norms, engine 2112;
08 - Euro-3 toxicity standards (EOBD), engine 2112;
13 - Russian toxicity norms, engine 2111;
16 - Euro-3 toxicity norms (EOBD), engine 2111.
Fourth discharge
- Letter (in the example - o) - denotes the level of software (a ... z); The further letter from the beginning of the alphabet, the older the level of the software.Fifth discharge
- Two digits (in example - 54) - denotes the calibration version (00 ... 99); The greater the number, the newer calibration.Thus, the example above is deciphered as:
M1 - control unit (controller) BOSCH MOTONIC M1.5.4;
V - family front-wheel drive VAZ;
13 - 8 valve 1.5 liters engine 2111, the norms of toxicity of Russia;
O - version of the software;
54 - Calibration version No. 54.
Changing calibrations can be achieved some improvement in the dynamic characteristics of the engine, reducing fuel consumption and toxic emissions to VOG. To change calibrations there are special programs and devices for their implementation, and for different types Controllers have developed different methods for replacing the "chip tuning" (adjustments of the ECU control program). As an example in Table. 5 shows tuning firmware for ECU BOSCH M1.5.4 1411020-70.
Component composition, functions, location of ESAU-D elements on the example of the VAZ-2111 engine with the MP7.0 Bosch controller
ESAU-D, equipped with an MP7.0 controller and installed on the VAZ-2111 engine, on the principle of action and the device is similar to the Motronic Bosch system and refers to ESAU-D with the combination of injection and ignition functions.In addition to controlling the injection and ignition, ESAU-D controls the irrigates of the idling, the electrical space, the purge of the adsorber of the gasoline pavement system (SAP), the control lamp " Check Engine", Cooling system fan and air conditioner compressor coupling (if installed). In addition, ESAU-D generates signals, proportional vehicle speeds and fuel consumption for a route computer, as well as a signal about the rotational speed of the engine crankshaft for a tachometer. The controller provides interaction with an external diagnostic device through a special connector located in the car. Domestic ESAU-D has a self-diagnostic function that allows you to fix the faults that cause them to identify them, write to the memory, inform the driver with the inclusion of the Check Engine control lamp. Diagnostic information can be removed from the EU RAM through the diagnostic connector to the external scanner.
It should be noted that the inclusion of the "Check Engine" lamp during movement does not require an instantaneous engine stop, as, for example, in situations with emergency disappearance of oil pressure in the lubricant system or emergency engine overheating, but only indicates the need to check the engine in the near future. The ESAU-D controller has emergency modes that provide engine operation when many malfunctions occur, with the exception of the most difficult, for example, when the crankshaft position sensor fails. To ESAU-D, you can connect the car protection system from the hijacking.
Constructive ESAU-D consists of a set of sensors, computer, a set of executive devices and wiring harness with connectors.
Electronic control unit (controller)
ECU is a central device ESAU-D. It receives analog information from the sensors, processes it with analog-to-digital converters and the program embodied in the ROM implements the control of actuating devices. Communication ECU C. electrical scheme Exercised through a 55-pin plug connector. ECU is placed under the appliance panel console (see Fig. 1).
Purpose of contacts and some data for control are shown in Table. 6.
ESAU-D Sensors (VAZ)
Air Flow Sensor (DMRV)
The DMRV GM and Bosch used in VAZ ESUs differ in the form of the housings and output signals. The GM sensor (HFM-5) generates a frequency signal for GM and January-4 controllers, and the Bosch sensor (HFM-5SL) - Analog signal for Bosch and January-5 control units.
Characteristic malfunction DMRV - Cutting wires from the sensor or breaking the platinum thread of the sensor itself. With such malfunctions, idling turns rise to 2000 rpm. During the movement in separate modes, detonation is possible.
When the sensor fails, it may occasionally produce an incorrect signal (typical for frequency sensors), and this does not lead to a malfunction code in the controller's memory. In this case, even when moving without acceleration, large "failures" arise and idle becomes unstable, which can lead to engine stop. ESAU-D In the case of DMRV failure, it turns back to the backup mode, calculating the air flow rate from the sensor of the Crankshaft position of the DPKV, (the signal contains information about the engine speed) and by signal with DPDZ. The fault is recorded in the memory of the error (P010-P0103) corresponding to the home and is indicated by the Check Engine lamp.
Throttle position sensor (DPDZ)
The sensor is designed to determine the position of the throttle.
When the flap is closed, the signal issued by the sensor is 0.5 ... 0.6 V, with an open position - 4.5 ... 4.8 V.
The data on the position of the throttle is necessary for the control unit for calculating the duration of the electrical impulses of the nozzles control and determining the optimal angle of the ignition advance.
Potentiometric DPDS injector engines VAZ usually fail due to wear of the conductive paths of the resistive plate and incorrectly selected spring force, pressing the resistive plate to the connector contacts.
Brand sensors often come across russian productionThey give out an unstable signal with a voltage of 0.25 ... 0.7 V with a closed throttle.
The sign of a faulty sensor is elevated or floating idle speeds. At the failure of the DPDS ESAU-D, it replaces it with a signal calculated in the rotational speed of the crankshaft and the DMRV signal. The fault is recorded in the memory with the corresponding error code (P0122-P0123) and the "Check Engine" lamp is indicated.
Coolant temperature sensor (DPU)
The temperature sensor is a thermistor with a negative resistance coefficient (R \u003d 470 OM at 130 ° C and R\u003e 100 com at -40 ° C). The ESAU-D controller on the drainage of the DRP voltage calculates the temperature of the coolant using its value in most engine control functions. At the failure of DRP, ESAU-D calculates the temperature of the engine operation and the testimony of DMRV. The malfunction of the DTP is recorded in the memory of the error code (P0115, P0117, P0118) and is indicated by the Check Engine lamp. In tab. 7 shows the data for checking the temperature sensor using a digital tester.
Detonation sensor (DD)
A sensitive piezoceramic element is used in DD, which generates alternating voltage during vibration. The amplitude and frequency of the signal depends on the level of detonation in the engine, which allows the ESAU-D controller to adjust the ignition advance angle to clean the detonation. You can check DD using an oscilloscope: A properly working DD generates a signal of a sinusoidal shape with a duration of 4 ... 6 ms and an amplitude of 2.5 ... 3 V (causing detonation with a sharp discovery of the choke on the operating engine). The malfunction in the DD path is recorded in memory with the appropriate error code (P0327, P0328) and is indicated by the Check Engine lamp.
Oxygen concentration sensor
Modern injection systems are performed in two versions - with feedback and without it. Feedback implies the presence of DCC (lambda probe) in the receiving pipe and the catalytic neutralizer of exhaust gases. With the ratio of air and fuel in the fuel-air (TV) mixture 14.7: 1 (this ratio is called a stoichiometric) catalytic converter the most effectively reduces the amount harmful substances (CO, CH, NOX) emitted with exhaust gases. To optimize the composition of the exhaust gases, in order to increase the fuel economy and the achievement of the greatest efficiency of the neutralizer, the fuel supply control is applied closed contour With feedback using a signal to DKK. The oxygen concentration sensor, the sensitive element of which is in the stream of exhaust gases, generates a signal as a buckling voltage change from 0.1 to 0.9 V (value 0.1 V - a poor TV mixture; 0.9 V is a rich TV mixture), With the transition through the average value of 0.45 V, when the TV mixture is stoichiometric. The ESAU-D controller based on the data obtained from the DCC changes the composition of the fuel-air mixture, maintaining it close to the stoichiometric.Competitive and heated to operating temperature (More than 300 ° C) DCC generates a frequency signal 1 ... 5 Hz. The malfunction in the DCC tract or the failure of the sensor itself is recorded in the memory of the corresponding error code (P0130, P0132, P0134) and the "Check Engine" lamp is indicated.
Car speed sensor (DSA)
DSA consists of a stator with a lounge element and a rotor with a magnet. During the movement of the car, DSA produces a signal with a frequency of 6 pulses per 1 m movement. The ESAU-D controller determines the speed at the frequency of the DSA pulses. The characteristic malfunction of DSA is a mechanical damage to the sensor, the speedometer does not work and the Check Engine lamp lights up. One of the codes is entered into memory - P0500 or P0503. It should be noted that at the engine work this refusal is not reflected in any way, which is sometimes used by unscrupulous owners, turning off DSA to hide real mileage car. On the example of the operation of the car VAZ-21102, the average duration of the DSA failure domestic production does not exceed 1.5 ... 2 years (or 20 ... 30 thousand km run).Crankshaft position sensor (DPKV)
On VAZ-2110, 2112 cars with a distributed injection of gasoline, DPKV is controlled from a special disk (sensor rotor) with 60 teeth, which are placed in a pitch of 6 degrees. For synchronization, two teeth are absent. The beginning of the synchronization reference for the ESAU-D controller is the first tooth after two missed, the crankshaft is at the position of 114 degrees to the top dead point (NTT) of the 1st and 4th cylinders. The toothed disk is located on the pulley crankshaft To drive the generator, and DPKV - on the oil pump lid. In the gap between the sensor core and the disk tooth 1 ± 0.4 mm and the frequency of 30 ± 5 rpm, the minimum amplitude of the AC voltage at the DPKV output must be at least 0.28 V. Resistance to the serviceable sensor is 500 ... 700 ohms. There are cases of contact loss in the connector and cliff of supply wires. The supply wires to protect against interference are shielded, the screen breaking can also lead to failures in the DPKV path.The malfunction in the DPKV path or the refusal of the DPKV itself is recorded in memory with the appropriate error code (P0335, P0336) and the "Check Engine" lamp is indicated, the engine will not work.
Executive elements ESAU-D (VAZ)
ElectricalSonasos (EBN)
In ESAU-D (VAZ), an ebne of a turbine type is used (Fig. 9, 11).
Ebn turns on the controller through the relay. It is also possible to enable EBN through the diagnostic connector (closed the contact between themselves. G and H). ESAU-D Program provides automatic shutdown Ebn, if after 2 seconds after switching on the ignition or starter does not rotate the engine crankshaft. On the Samara cars, different instrument panels are mounted with different fuel level pointers. In this regard, the fuel level sensors (located on the Benzonasos monoblock) also exist in two versions:
21083 (with a high instrument panel), the resistance of the sensor 0.25 ohms - with an empty tank and 20 com - with full;
2112 (for cars with Torpeda 2108, 2110 and 2115). Ebn assembled with a high-panel VAZ car sensor have a yellow setting mark in the arrow zone (when installing the EBN arrow should look back) and for low - without a label or with a black mark. Ebn itself is the same and if they accidentally confuse, then there will be incorrect fuel level readings, but the engine will work normally.
Fuel injectors
Fuel nozzles (see Fig. 10, 11) are electromagnetic devices and serve for gasoline injection on inlet valves Calculated ECD of the amount of fuel. The MP7.0 Bosch controller uses the injectors driver with a self-diagnosis function. It determines the failure of a break, a short circuit for a mass or defects of the power control circuits of the nozzles. At the same time, the error codes P0201, P0202, P0203, P0204 and the CHECK Engine lamp turns on. The malfunction of this character is easily diagnosed with a multimeter by checking the resistance of the winding of each nozzle (11 ... 15 ohms), the connective harness is less than 1 ohms.Injectors different manufacturers (Bosch, GM or domestic) interchangeable by internal resistance and landing places. The nozzles are better to change the set, as their fuel sprayers are different. Injectors russian manufacturers And Bosch is less susceptible to corrosion and, accordingly, serve longer. On the saddles of the injectors and at the ends of the locking elements, solid resinous sediments appear over time, the main reason for the failure of the injectors. As a result, the following symptoms appear: embarrassed, unstable idling, dips during acceleration, increased flow Fuel, power loss and turret engine. Therefore, especially for engines with a mileage of more than 100 thousand km, it is recommended to clean the nozzles. Specialists of the company "Inomor" held comparative analysis The effectiveness of various solvents and devices for cleaning the nozzles and came to the conclusion: all devices are close in design, their capabilities and differ only at the price. But the cleaning solvents are different efficiency. The best was the solventccentrate of the American company "Carleb Wedge" (Carbol Clean). According to reviews of firms from Angarsk, Krasnodar, Moscow, Novosibirsk, Togliatti, this concentrate is significantly (on average 15 ... 20%) more efficiently. Accordingly, the flow rate is less and cleaning is faster.
Ignition module (MZ) with candles
In the ESAU-D (VAZ) ignition system, a MH is used consisting of a 2-channel electronic switch and a pair of two-water ignition coils (see "Repair & Service" No. 6, 2003, Fig. 11 on p. 62). The ignition system ensures detonation deviations on a special algorithm using DD. The ignition system has no moving parts and therefore does not require maintenance. In the event of a malfunction of any element of the MH, it is necessary to replace the entire node assembly. Signs of malfunction MH are diverse: from engine interruptions in separate modes before stopping it. The control lamp does not light up. To diagnose malfunction in the ignition system, it is necessary to check the presence of the MH power (contact. D "- power +12 V, contact." C "- common), the presence and serviceability of the connection of the controller with the MH (Cont." B "MH - Cont. 1 Controller and contact. "A" of the Ministry of Health - Cont. 21 of the controller) and the resistance of high-voltage wires (approximately 15,000 ohms).Domestic MC 42.3705 consists of two ignition coils with two high-voltage conclusions and a 2-channel switch collected in one monoblock and compounds are filled (Fig. 12).
Until April 1999, the modules were poured by a silicone compound, which adopted badly to the details and was not plastic enough. Heating, silicone peelled from the body of the monoblock and moisture fell into the resulting cracks, after which the module was out of order.
From April 1999, polyurethane is used instead of silicone compound. After that, the number of failures of the MH decreased by 80%. The MH, manufactured by the Moscow Plant MZATE-2 (previously ATE-2), is used with Bosch and January-5 controllers. To control systems with GM and January-4 blocks, this module is not suitable.
The VAZ-2111 engine ignition system is equipped with A-17 DVRM (or analog) with an interference resistor with an interference resistance of 4 ... 10 com and copper core. The gap between the electrodes is 1.00 ... 1,13 mm. The VAZ-2112 engine is equipped with AU-17 DVRM candles that can be used on the VAZ-2111 engine. Based on the experience of the operation of VAZ-21102 cars, the average duration of the work on the refusal of candles of domestic production is 1-1.5 years (or 20-30 thousand km of mileage).
Idling regulator (RXX)
RXH (Fig. 13) is installed in the bypass (bypass) channel of air of the throttle nozzle and adjusts the rotational speed of the crankshaft at idle when the throttle valve is closed (see the scheme in Fig. 11), while it helps to reduce toxicity exhaust gases. When braking the engine, when the choke is sharply closed, the RHX increases the amount of air supplied to the throttle bypass, thereby ensuring the depletion of the TV mixture. It also provides a decrease in exhaust toxicity.It should be noted that the improper operation of the engine at idle is not always associated with the refusal of the RCX. Disturbance of the idling engine can be caused:
receded TV mixture;
re-entered TV mixture;
defect throttle;
Incorrect operation of the ventilation system carter gases;
Brown air filter;
Air seats in the intake manifold.
Only after the elimination of all these problems should be dealt with RXX. Verification of RXX in the absence of a special tester is very problematic. The only thing that can be done is to ring the windings of the RXX in the absence of a cliff and short circuit (the resistance of the windings should be 40 ... 80 ohms) and inspect it for obvious defects. Based on the experience of the operation of VAZ-21102 cars, the average duration of developments on the refusal of the PCX domestic production (2112-1148300-82) is 1.5-2 years (or 40 ... 50 thousand km mileage). RCX failure identified by the diagnostic system is fixed by error codes P0506, P0507 and the inclusion of the "Check Engine" lamp.
Diagnostics ESAU-D (VAZ)
Self-diagnostic function
ESAU-D (VAZ), as well as the "Motronic" system, has a built-in self-diagnostic function, by which the signals generated by sensors and signals entering the actuators, with the regular values \u200b\u200bof these signals, which are stored in the constant memory of the ECU in the ECU . Detected faults and the corresponding mode parameters are entered into the controller's memory. These data can be analyzed during maintenance via diagnostic equipmentconnected to the standard diagnostic connector.To promptly inform the driver about ESA-D errors in the work, in a combination of VAZ devices there is a check engine test lamp. If this error occurs in the system for a short time, and then it does not appear for a long time, then after some time the lamp goes out (however, the diagnostic fault code is stored in memory). If the error does not disappear, the lamp burns stand alone, recalling the need for diagnostics. Clearing memory from recorded error codes is made either by disconnecting the controller from the power supply for a while at least 10 seconds or using special diagnostic equipment.
Diagnostic code (DC) malfunction, codes table
AvtoVAZ seeks to maintain the compatibility of fault codes with the ODB-II standard (SAE / MFG). Although not all codes are supported, gradually their number is growing.ODB-II error code format Next:
The first letter in the code means a car system in which a malfunction arose: B - Body (Body), C - Chassis (chassis), P - POWERTRAIN ( force aggregate), U is Network.
The first digit in the code means the authorship of the error: if "0", then this is SAE (J2012); If "1", then this is MFG (specific code that is necessary for the car manufacturer).
The second digit in the code means the subsystem and decrypts as:
1 - Fuel and Air Metering Fuel and Air
2 - fuel-friendly engine subsystem (injection circuit) Fuel and Air Metering (Injector Circuit);
3 - Ignition Systems or Misfire (Ignition Systems or Misfire);
4 - Auxiliary emission management subsystem (Auxiliary Emission Controls). It should appear in the ECU VAZ with the transition to the ejection norms of Euro-3;
5 - Engine, speed and idle speed control subsystem (Vehicle Speed \u200b\u200bControl and Idle Control System);
6 - Computer output chains (Computer Output Circuit);
7 - Transmission (TRANSMISSION).
The last two digits mean the actual fault code itself.
In tab. 8 shows diagnostic fault codes that are supported in controllers.
AvtoVAZ (fatsed codes used by the Bosch MP7.0 controller).
Methods and practical receptions of reading diagnostic codes (DK)
Reading DC with the "Check Engine" lamp
This method is applicable to GM and January-4 controllers. Bosch controllers can only be interviewed using diagnostic equipment.In order to count the fault codes using a control lamp, you need to close the contacts A and in the diagnostic connector (see Fig. 11) and turn on the ignition, without a winding engine. At this moment, the Check Engine lamp should give code 12 three times in a row. The code indication sequence is as follows: Turning on the lamp, short pause, two inclusions in a row, a long pause and so twice. Code 12 is not a malfunction code, it suggests that the self-diagnosis system is operational. If the code 12 is missing, the self-diagnosis system is faulty.
After issuing the code 12, the Check Engine lamp will begin to produce previously detected and recorded fault codes in the order of increasing their number. Each code is issued three times. And so in a circle. If malfunctions are not detected, only code 12 will be issued.
Reading DC with special diagnostic equipment
1. DST-2 tester or similar overseas production tester.Scanner Tester of the Samara NPP "New Technological Systems" DST-2 and its modifications that appeared in 1995 provide ample opportunities for eSAU-D diagnostics (VAZ). In addition to controlling the current ESAU-D parameters, sensor checks and executive mechanisms DST Family Scanner Testers allow you to control and register the ESAU-D state in the dynamics, which helps in finding non-permanent faults. The only drawback of the DST family testers is a high cost.
2. Route computer (MK) with diagnostic function.
There are many MK options, but only on-board computers of the Kursk OJSC "Rovmmash" have a certificate of auto-vase and are supplied to the conveyor for car configuration "Suite". This is AMK-211000 for cars of the tenth series and AMK-211500 - for installation on all VAZ small cargo cars. The available MK in their capabilities are little inferior to the testers scanner, for example, DST-4M, but the cost of these devices is even higher.
3. Personal computer with special (software and hardware) connected interface.
This method of reading codes and at the cost of implementation and according to the diagnostic possibilities provided is the most applicable in the "home" conditions. Indeed, the diagnostic program distributed on the Internet (the author used "Mytstr R12") and adapters (see http://www.autoelectric.ru/) provide ample opportunities for the diagnosis of ESAU-D (VAZ). The main advantage of the computer in front of the tester is the convenience of saving test results. In order to save the results, it is enough to click on the "Record" button, set the file name and add a comment if necessary. In the future, it is enough to compare the obtained parameters with regular parameters Good ESAU-D and make the necessary conclusions.
Upon completion of the repair and to control the re-appearance of the DC, it is necessary to clear the memory of the controller. There are two ways to erase from the memory of the fault codes. Codes can be erased using diagnostic equipment, as well as if disable control unit from rechargeable battery for 30 s.
General approach to the search and troubleshooting in ESAU-D
Condition normal work All ESAU-D components are the working condition of all mechanical, pneumatic and hydraulic Systems Engine. Therefore, before the start of the diagnosis of ESAU-D, you must check:The working condition of the cylinder-piston group (the compression measured on the heated engine in all cylinders should be at least 10 kg / cm2);
tightness of intake and exhaust manifolds;
correctness of the installation of the phases of gas distribution;
Fuel system service (Normal pressure in fuel system should be 2.5 ... 3.5 bar);
The state of the power supply (the voltage in the onboard network on the engine running should be 13.2 ... 14.7 V and when the start should not be descended below 8 V).
ESAU-D has a number of operating parameters, compliance with the regulatory value of which determines the performance of the system as a whole. Their check is carried out using an oscilloscope, a digital multimeter and strobe. Note that the check of some of the parameters is possible only on the engine running. Therefore, at the first stage of diagnostics, you need to start the engine and correctly estimate the state of all ESAU-D components.
An ideal prerequisite for the correct diagnostics of ESAU-D is the appearance of a diagnostic malfunction code. Although not always, the DC accurately indicates the root cause of malfunction. More often, DC indicates a consequence of what happened. And only a detailed analysis, checking the doubt of ESAU-D parameters help to find a malfunction.
A large number of electronic devices in modern car requires the owner of special knowledge and techniques in operation and maintenance. The following features of the operation of the vehicle with ESAU-D must be known to maintain and repair their car.
1. It is possible to de-energetize the ECU not earlier than 30 seconds after turning off the engine, otherwise information will be erased from RAM. In order to restore lost information, you need to start the engine and give it to warm up to the operating temperature. After starting the engine, the check engine check lamp will be lit for some time, which is not a malfunction.
2. On all injector engines VAZ after an unsuccessful start attempt (more often it happens at air temperature below -25 ° C), "flooded" candles can be dried by turning on the purge mode. To do this, it is necessary to smoothly click on the gas pedal and on 5 ... 10 with the starter. For ECU, such actions will be a signal to turn off the fuel supply.
3. All controllers are designed in such a way that at ambient temperature to + 25 ° C, they retain performance at a supply voltage of 18 V in two hours. At voltage 24 V, they are guaranteed to retain their performance for at least five minutes. Cases of failure of controllers due to increased voltage in the onboard network, even if the voltage regulator fails, is not recorded.
4. Car controllers "Tenate" series are compatible with onboard computer 2111-3857010 (16.3857). The control units that are installed on the Samara-2 car are compatible with onboard computer 2114-3857010 (15.3857).
5. In order to block the start of the engine when installing the security alarm on the injection engines of the VAZ car with controllers of the M1.5.4 or "January 5.1" (inapplicability to MR7.0, the *) is noted to "break" any of the following wires:
control of the ignition module;
gas station management;
Control Injectors; *
The wire connecting the 15th terminal of the controller (Ignition signal on the engine control system) with a 18-terminal block;
"Plus" or "mass" wire of the fuel pump relay; *
To climb among themselves or clogging on the "mass" of the wire of the inductive sensor. In addition, it is possible to climb through a resistor with a par value of 680 Ohm - 1 kΩ wires (signal and power) sensor of the throttle position sensor. *
When breaking conductors that feed the ignition module or nozzle, it is necessary to use openingors, withstanding current of at least 3 A, and the wires of the supply chain of the fuel pump - at least 10 A.
Troubleshooting on the example of the VAZ-2111 engine with Bosch MP7.0 H controller
Previously, it is necessary to check the operating parameters of ESAU-D, which can be measured on a non-working engine (see Table 8).To start the engine you need:
The presence of fuel in the tank and normally working fuel pump;
good ignition;
so that the DPKV is;
In order for the nozzles (the failure of all the nozzles is unlikely);
In order for the controller (although its breakdown, even for domestic cars, is unlikely).
Electrical junction (EBN) is checked by characteristic sound. Also, when the ECU is turned on, gasoline pressure should appear in the fuel line (2.5 ... 3 bar). After turning off the pump, the pressure in the system should not fall quickly. If it falls, then most likely the fuel pressure regulator valve is faulty. For a short time it can be drowning, without completely shifting the tube (for example, a suitable clamp) reverse benzorota, creating the necessary pressure in the system. If EBN is "silent", the presence of +12 V on the pump block and then on the chain (see Fig. 11).
Ignition can only be checked with a reliable connection of candles with a mass, otherwise the control unit is easily increasing. To diagnose a malfunction in the ignition system, it is necessary to check the presence of the MH power (contact D +12 V, contact. C - general, see Fig. 11), the presence and serviceability of the connection of the controller with the MH (line B - Cont. 1 ECU and A - Cont. 21 ECU), check the resistance of high-voltage wires (about 15 com).
Initially, it is necessary to inspect the DPKV for damage to the wire and the screen. DPKV is the only knot in ESAU-D, without which the engine will not work. Resistance to a good sensor - 500-700 Ohm. AC amplitude measured on DPKV (Control. 48, 49 ECU, see Fig. 11) When scrolling the engine, the starter is 1 ... 2 V. There are cases of contact loss in the connector and breaking the supply wires. The supply wires to protect against interference are shielded, the screen breaking can also lead to malfunctions in the work of the Ministry of Health. The design of the crankshaft pulley has a rubber damper, due to poor vulcanization, the rubber is sometimes peeling from one of the pulley disks, and they are shifted. As a result, the impulses on the nozzles and the ignition come not in time. The engine in this case will also not work.
The electrical resistance of the nozzles is checked by an ometer. It must be 12 ... 15 ohms in each nozzle. The resistance of the wires in the connecting harness is less than 1 ohms.
The controller (ECU) is checked for power on a shut off and non-disconnected inputs (contact 18 and 37, see Fig. 11). In the absence of power, the main relay is checked, fusible insert and fuses X, Y and Z.
If the engine is poorly started in the cold time (at temperatures ambient Less -20 ° C), you can scroll the engine with the starter with a pressed gas pedal (in this case, the fuel will not be supplied) that will allow to blow cylinders. By letting the pedal, you can repeat the attempt to start. If it succeeded, it is either faulty PCH, or one of the sensors (most likely DPT). But the cause of poor start can be the low fuel pressure, due to the fault of the fuel pump or the fuel pressure regulator valve.
Also prevent the launch of the throttle position sensor (DPDZ). If the voltage on it is about 3.4 V, then it will not be possible to start. It can be turned off or stunned by providing voltage on it 0.1 ... 0.2 V.
In some cases, an emergency version of the engine starts, when all sensors are turned off from the computer, except for DPKV, and the attempt to start will be repeated. In this case, the engine may start, if experimental by determining the initial position of the gas pedal.
If he started, then it is necessary to check the ESAU-D parameters and its elements (see Table 9).
Using diagnostic codes (DC) when searching and troubleshooting ESAU-D
After starting and warming up the engine in any available methods Check diagnostic fault codes, pre-checking the performance of the diagnostic chain. How this fall is described in the instruction manual for a specific tester. If it is a tester scanner or IBM PC-software tester, then it is possible to check the entire ESAU-D periphery (executive mechanisms and sensors) and carrying out various dynamic tests. The resulting DCs must be analyzed to establish the causal relationship of what is happening in ESAU-D.The following conditions must be performed before checking:
The engine is heated to the operating temperature;
The engine runs on low idling;
Diagnostic contact is not closed for mass;
The DST-2 device (or similar) is not connected;
air conditioner (if any) is disabled;
The negative clip of the digital voltmeter is securely attached to the mass.
In tab. 10 shows diagnostic codes, possible faulty electrical chains, as well as additional manifestations of identified faults.
In the columns "Voltage" and " possible signs Chain malfunctions »This table adopted the following notation:
(1) - below 0.1 V for the first two seconds after turning on the slide without scrolling the engine;
(2) - below 1 in or above 10 V, depending on the position of the leading wheels standing car. When moving, the voltage varies depending on the speed;
(3) - varies depending on temperature;
(4) - varies depending on the level of vibration of that part of the engine on which the detonation sensor is installed (DD);
(5) - varies depending on the frequency of rotation of the engine;
(6) - voltage on the battery battery (B +) when driving the engine;
(7) - cliff;
(8) - breakage / circuit circuit;
(9) - the chain is closed for mass;
(10) - the chain is closed at +12 V;
(11) - varies in the range from the battery voltage to voltage less than 1 V in information from the duty of pulses;
(12) - with a relay on less than 0.1 V, and with a relay disconnected - equal to the battery voltage;
(13) - with the included control lamp The voltage is less than 0.5 V, when the battery is turned off on the contact, the battery voltage appears;
(14) - decreases with increasing duration and frequency of injection pulses;
(B +) - should be equal to the battery voltage.
The color of the wire (2nd column), indicated by P (purple), corresponds to the designation of the Kyrgyz Republic (red).
The concept of the hidden faults of ESAU-D
Some ESAU-D faults may have an implicit or hidden character. This may be due, for example, with a short-term change in the characteristics of ESAU-D components, which lead to errors in the system. Some motor testers have a special mode that allows you to record changes in ESAU-D parameters for a certain time to clarify the source of floating malfunction. In DST-2, for example, this mode is called "data collection".In tab. 11 shows the ESAU-D (VAZ) parameters with the BOSCH MP7.0 controller (removed using DST-2), which can be used to diagnose in the absence of malfunction of DC.
№6 "Repair & Service" June 2003
The topic of this article will be the diagnosis of tidy on the VAZ 2110, 2111, 2112.
In order to start the self-diagnostic mode of instrument combinations, it is necessary to turn on the ignition at the same time to hold the button dropping the daily mileage.
How to understand that the mode is started? Everything is very simple, the oil pressure light bulb will begin to burn, the battery icon, the fuel warning lamp and the Chek light bulb (check). In this case, all the arrows begin to move from the initial position to the maximum, and this process is repeated. So you can check the operation of all the bulbs, appliances, arrows.
When you click the button to reset the run per day, the error code will appear.
To reset this error, you need to hold and hold the button, which is reset the daily mileage. While the error is not reset to 0.
To verify that the errors have dropped, repeat the procedure: We enter the mode - Diagnostics of the VAZ 2110 tidy (while the ignition is switched on and hold the button dropping the mileage); Press three times the running button and look at the bortovic screen. It should show 0.
This was decided. But, now it is necessary to find out that we have revealed in case of self-diagnosis of instrument combinations. To do this, you are presented table.
If the number is different, for example, as we have, it means that the errors are somewhat and the computer shows their sum: 6 (2 + 4), 10 (2 + 8), 12 (4 + 8), 14 (2 + 4 + eight).
The whole process can be viewed on the video below:
With errors in self-diagnosis of combinations of instruments of VAZ 2110 figured out, but here you can see, (when the engine light lights) yourself.
