An on-board car computer is the best assistant for monitoring important parameters. An on-board car computer is the best assistant for monitoring important parameters. Operating instructions for the VAZ on-board computer.

The standard on-board computer is designed to display travel time, outside temperature, speed, on-board voltage, mileage, total fuel consumption for the trip, fault codes, clock and alarm clock.

Video instruction

Screen legends

Parameters and sequence of switching computer display modes

Download instructions

Route computer 2114-3857010 instructions

Sequencing:

disconnect the battery terminals;
remove the cover from the “tidy”;
provide access to the connector responsible for diagnostics;
remove part of the console;
connect a meter-long piece of wire (see image below);

Operating instructions for the trip car computer

VAZ 2113-15 (AMK-211501)

Passport RUIB.402253.507-01 PS

Automotive route computer AMK-211501 (hereinafter referred to as the computer) is designed to process sensor signals and display vehicle movement parameters, fuel consumption, ambient temperature, on-board network voltage, timing parameters, diagnostics of electronic engine control systems (hereinafter referred to as ECM), as well as for detection obstacles and indication of the distance to them when the vehicle is moving in reverse (with a connected vehicle parking device).

We ask you to carefully read this passport, which will allow you to fully use the performance qualities of your computer. When purchasing, you must check the absence of external mechanical damage, completeness, presence and integrity of the factory seal, compliance of the serial number of the computer with the number specified in this passport, as well as the passport signed and stamped by the seller. The manufacturer may make minor design changes to the computer that do not impair its quality and reliability, which are not reflected in this passport. on-board computer for VAZ 2114 operating instructions Legal address of the manufacturer: Russia, 305038, Kursk, st. 2-ya Rabochaya, 23, JSC "Schetmash".

ATTENTION: THE COMPUTER IS SUPPLIED TO THE CONSUMER WITH A PROTECTIVE FILM ON THE GLASS OF THE COMPUTER PANEL, WHICH CAN BE REMOVED AT THE WISH OF THE CONSUMER.

1 Product basics and technical data

1.1 The computer is installed on VAZ 2108, VAZ 2109, VAZ-21099, VAZ-2115 cars (hereinafter referred to as VAZ cars) with a carburetor engine or equipped with an ECM with an electronic control unit (hereinafter referred to as the ECU):

M1.5.4,
M1.5.4N,
MP7.0 or January-5.1,
GAZ-3110 cars,
GAZ-3102 with engines equipped with ECM with ECU: MIKAS 5.4, MIKAS 7.1, 301.3763 000 01.

The computer can also be installed on other types of cars, ensuring that the computer receives vehicle speed and fuel consumption signals with the signal parameters given in Appendix A. To ensure that all computer functions are performed, a car with a carburetor engine must have the following equipment manufactured by OJSC Schetmash:

fuel consumption sensor TU 4213-001-00225331-95 (hereinafter referred to as DRT),
vehicle speed sensor TU 4228-001-00225331-95 (hereinafter referred to as DSA),
external temperature sensor TU 4573-028-00225331-00 (hereinafter referred to as DVT),
set of mounting parts RYUIB.402921.501 LLP (RUIB.402921.501-02) (hereinafter referred to as KMCH), purchased by the consumer (if necessary) separately.

To install a computer, a vehicle with an engine equipped with an ECM must be equipped with a set of mounting parts RYUIB.402921.501 TOO (RUIB.402921.501-03) (hereinafter referred to as KMCh1) and DVT manufactured by OJSC "Schetmash", purchased separately by the consumer.

The GAZ-3110 car with ECU MIKAS 5.4, MIKAS 7.1, 301.3763 000 01 must be equipped with a set of mounting parts RYUIB.402921.501 TOO (RUIB.402921.501-06) (hereinafter referred to as KMCh2) produced by OJSC "Schetmash", purchased separately by the consumer.

To use the “Parking” function, the car must be additionally equipped with a car parking device RYUIB.453688.501 manufactured by OJSC “Schetmash”, which is purchased separately by the consumer. on-board computer for VAZ 2115 instructions

1.2 The computer displays the following parameters:

current time of day;
travel time excluding stops;
total travel time;
calendar;
alarm;
current fuel consumption;
average fuel consumption per trip;
total fuel consumption for the trip;
mileage on remaining fuel;
fuel level in the tank;
trip mileage;
average travel speed;
temperature outside;
instant speed;
on-board network voltage;
the presence of an obstacle and the distance to it when the vehicle is moving in reverse.

The parameters and sequence of switching computer display modes are given in Appendix B. The computer receives and displays diagnostic information from the ECM and performs the following ECU diagnostic functions:

— reading fault codes; — resetting all accumulated fault codes of the ECU;
— reading a set of ECU parameters; — reading the identification data of the ECU (the function is not available when selecting an ECU type MIKAS 5.4, MIKAS 7.1, 301.3763 000-01).

The computer receives information about the distance to the obstacle from the car parking device. The computer receives signals coming from sensors installed in the car: DSA, DRT, DVT and fuel level sensor (hereinafter referred to as FLS). The parameters of the sensor output signals are given in Appendix A.

The computer is designed to operate in a direct current circuit with a rated supply voltage of 12 V DC in accordance with GOST 3940 84.

The operating supply voltage range is from 10.8 to 15.0 V.

Maximum computer current consumption at a supply voltage of 13.5 V and no sound signal in the operating temperature range, A, no more than:

— with the ignition off and no backlight voltage on pin “6”……….……………….…… 0.015;

— when the “backlight” mode is turned on ……….……………….…… 0.160.

The operating range of ambient air temperature is from minus 4 0 to plus 60 o C.

Overall dimensions, mm, no more than …………………………… 238x50x56.

Weight, kg, no more than ……………………………………..……………… 0.4.

2 COMPLETENESS

Automotive route computer AMK 211501 - 1 pc. Automotive route computer AMK 211501. Passport - 1 copy. Packaging - 1 pc.

3 SETTING UP THE ON-BOARD COMPUTER

3.1 Computer structure

A general view of the front panel of the computer is shown in Figure 1.

The computer has a case, on the front of which there is a panel with a liquid crystal indicator (hereinafter referred to as the indicator) and ten keys for controlling the computer. On the rear wall of the case there is a connector for connecting the vehicle harness. Seven keys serve to select the desired function group and select functions within the group and are labeled as follows:

“T”, “KM/N”, “KM”, “L”, “L/100”, “ECU”, “N”.

The “START” key is intended to determine the start of a trip and reset accumulated parameters, to fix the value of a parameter in the correction mode and to set or remove the parameter control mode.

The “+” and “—” keys are used to increase or decrease the parameter value in the parameter correction mode and to view diagnostic information.

The map for switching display modes is given in Appendix B. When the ignition is turned off, the current time of day is displayed on the indicator; the previously set alarm clock will sound a sound signal at the appointed time.

To reset the alarm beep, press the “START” key.

Pressing any key except the “-” and “+” keys turns on the indicator backlight. The type and combination of icons displayed on the indicator, as well as the symbols of the units of measurement of the parameters, determine the selected function.

Indication of parameters: “Current time of day”, “Trip time excluding stops”, “Total trip time” is accompanied by a flashing dot.

When the alarm clock is set, the current time indication is accompanied by a bell symbol.

The computer monitors the following parameters:

— maximum vehicle speed;
— on-board network voltage;
- vehicle mileage with remaining fuel in the tank.

When the controlled parameter goes beyond the set value: maximum speed from 20 to 200 km/h depending on the setting, mileage with remaining fuel less than 50 km, on-board voltage below 10.8 V or above 14.8 V, the “bell” symbol starts flash and a sound signal is generated: for the first two parameters, a duration of 3 s and a 15 s pause, the sound signal is repeated twice.

If the voltage of the on-board network deviates, a sound signal is generated with a delay of 10 s and has a duration of 5 s and a pause of 5 s, the sound signal is repeated three times. The sound signal is accompanied by the display of the value of the controlled parameter on the indicator. The sound signal is reset using the “START” key. After the sound signal is reset, the indication of a parameter that has gone beyond the set value is accompanied by a flashing “bell” symbol. When the parameter returns to normal, the alarm stops. To set or remove the parameter control mode, you must use the “START” key to set or reset the “bell” symbol in the display mode of the controlled parameter.

For example, to set the speed control mode, you need to use the “KM/H” key to enter the “Instantaneous speed” mode and use the “START” key to set the “bell” symbol on the indicator. Resetting or setting a sound signal for confirming key presses is performed in the display mode of the parameter “Travel time without taking into account stops” by pressing the “START” key.

The parameters: “Average trip speed”, “Average fuel consumption per trip”, “Mileage on remaining fuel” are displayed when the following conditions are met: the “Trip mileage” parameter is more than 1 km and the “Trip time excluding stops” parameter is more than 1 minute, up to If these conditions are met, the symbols “ — — — — ” are displayed on the indicator. To reset all accumulated parameters: “Trip time excluding stops”, “Total trip time”, “Total fuel consumption for the trip”, “Trip mileage”, in the display mode of one of these parameters, press and hold the “START” key for more than 4 s until a two-tone beep appears.

After resetting, it is necessary to check the state of the mode indicator (presence or absence of the “bell” symbol) in which the reset was performed, since it may change its state. If there is no DVT or a malfunction in its circuit, in the display mode of the “Outside Temperature” parameter, the symbols “Co” are displayed on the indicator.

3.2 Setting timing parameters

Parameter reading correction mode:

"Current time of day"
"Calendar",
The “alarm clock” is turned on and reset by the “START” key.

The adjusted digits of the parameter are marked by blinking. Use the “+” or “-” keys to set the required parameter value. When you hold down the “+” or “-” keys for more than 0.5 s, the auto-repeat mode is activated. Setting the clock using precise time signals is done as follows: in the display mode of the “Current time of day” parameter, press and release the “START” key and, at the sixth signal of the exact time, press the “H” key, and the digits of minutes and seconds are reset to zero. If the value of the “Current time of day” parameter coincides with the set value of the alarm clock, three melodic sound signals are issued, each lasting 30 seconds with a period of 1 minute. Resetting the alarm setting is carried out as follows: in the “Alarm clock” parameter display mode, press and release the “START” key and then press the “H” key. In this case, the symbols “ ” appear in the digital digits, and in the display mode of the “Current time of day” parameter there is no “bell” symbol.

3.3 Clock correction

To reduce the clock error, it is possible to introduce a correction factor. To do this, in the display mode of the “Current time of day” parameter, press and hold the “START” key for 2 s - the symbol “C” and the blinking value of the correction factor will appear on the indicator. Use the “+” or “—” keys to enter the required coefficient value and press the “START” key to exit the correction mode. Are the maximum values of the correction factor equal? 31. One unit of the correction factor is equal to a change in the clock speed by 0.35 s per day for positive values and 0.18 s per day for negative values.

3.4 Setting the speed limit

The maximum speed setting mode is entered by pressing the “START” key in the “Average travel speed” parameter display mode. In this case, a flashing value of the maximum speed appears on the indicator, when exceeded, an audible warning signal is generated. The speed limit value is changed using the “+” or “-” keys in 5 km/h increments from 20 to 200 km/h. Exit from the installation mode is done by pressing the “START” key.

3.5 Indicator backlight operating modes

When the instrument lighting is on, the illumination level is adjusted using the vehicle instrument scale illumination regulator. With the instrument lighting turned off and the ignition on, the backlight level is adjusted in the following sequence: in the “Total travel time” parameter display mode, press and release the “START” key. In this case, all single segments (pictograms) will be displayed on the indicator, which is a sign of the backlight level adjustment mode, and the digital digits will display a number corresponding to the backlight level as a percentage of the maximum value. Use the “+” or “-” keys to set the required backlight level. Each time you press the keys, the backlight level changes by 5%. When you hold down the keys for more than 0.5 s, the auto-repeat mode is activated. The set backlight level is maintained until the next correction. To exit the adjustment mode, press the “START” key.

3.6 Setting the fuel level

Setting the fuel level table

Tables of FLS readings with a resolution of 3 liters are entered into the computer memory (fuel level values at intermediate points are calculated by interpolation). Depending on the type of car and the type of instrument cluster installed on the car, for the computer to correctly indicate the fuel level in the tank, you must install one of the fuel level tables stored in the computer memory. The car can be equipped with electromechanical type instrument combinations that generate a fuel level output signal with a maximum voltage of more than 5 V, or electronic instrument combinations that generate a fuel level output signal with a maximum voltage of up to 5 V (a distinctive feature of these instrument combinations is the presence of a liquid crystal odometer indicator) . The procedure for setting the type of instrument cluster and the corresponding fuel level table is as follows:

a) disconnect the “Battery” circuit (remove the “-” terminal of the battery or disconnect the harness connector from the computer);

b) press one of the following keys to select the type of instrument cluster: — “L” instrument cluster of electromechanical type; - “L/100” – electronic instrument cluster; — “KM” instrument cluster of the GAZ-3110 car;

c) while holding the selected key, connect the “Battery” circuit (connect the harness connector to the computer) and after a period of 2 seconds, release the key.

3.7 FLS calibration

Due to the fact that the vehicle's FLS has a large technological spread of parameters, to increase the accuracy of the fuel level readings, the computer provides a correction mode for the FLS readings table (taring).

ATTENTION! BEFORE STARTING CALIBRATION, YOU MUST CHECK THAT THE FUEL LEVEL SIGNAL IS CORRECTLY CONNECTED TO THE COMPUTER AND SET THE CORRECT TYPE OF INSTRUMENT COMBINATION.

The calibration procedure can be carried out independently at the request of the owner.

To do this, it is necessary to drain the gasoline from the tank, leaving the minimum volume of fuel required for the operation of the gas pump (for VAZ cars it is 3 liters) - this volume is then taken as the zero level.
Then enter the display mode of the “Fuel level in the tank” parameter, press and hold the “START” key for 2 s, and the flashing number “0” will appear on the indicator.
Press and hold the “L” key for 1 second until a sound signal appears confirming the memorization of information. After this, a flashing number “3” will appear on the indicator.
Fill the gas tank with 3 liters of gasoline using a measuring container, wait the time required to set a constant fuel level, press and hold the “L” key for 1 s until a confirmation sound appears. A flashing number “6” will appear on the indicator.
Next, to continue taring, you must repeat the procedure described above, each time adding 3 liters and then pressing the “L” key. In this case, it is necessary to ensure that the total amount of fuel in the tank corresponds to the value on the indicator for a specific calibration stage.
To complete the calibration mode after recording the last fuel level value, you must press the “START” key, turn off and turn on the ignition.

Note – The maximum possible value of the fuel level during calibration is 72 l.

3.8 Computer operation in diagnostic mode

3.8.1 Reading fault codes

Entering the mode by pressing the “ECU” key for the first time. The symbols “En.NN” will appear on the computer indicator, where NN is the total number of fault codes accumulated in the ECU memory. The “+” and “—” keys select the fault number. For an ECU installed on a VAZ family car, the fault number is displayed on the indicator as a combination of symbols “EX.NN”, where EX is the fault status, NN is the fault number. Example - E0. 1. The values of the fault code status for the MP7.0 ECU are shown in Table D.3.2. For an ECU installed on a GAZ family vehicle, the fault number is displayed on the indicator as a combination of symbols “ENNN”, where NNN is the fault number. If the total number of faults is 0, then fault numbers are not displayed. The display switches to viewing the fault code and back (to viewing the fault number) by briefly (lasting less than 1 s) pressing the “START” key. The “+” and “-” keys are used to view all fault codes. Possible meanings of fault codes are given in Appendix D.

3.8.2 Resetting fault codes

Resetting all fault codes accumulated in the computer’s memory is done by pressing and holding the “START” key for 2 seconds in the mode of displaying fault codes or numbers.

3.8.3 Selecting the ECU type

The computer can be installed on cars with engines equipped with various types of ECUs. To select the ECU type, you must enter the ECU parameters display mode (if there is no connection with the ECU, the “RS.-” symbols and a flashing “bell” symbol will be displayed on the computer indicator), press and hold the “START” key for 2 s until the indicator of the “ECU” symbol and a flashing number indicating the type of ECU. Use the “+” or “—” keys to select the required ECU type and exit the mode by pressing the “START” key. To establish communication with a new type of ECU, turn off and then turn on the ignition. When selecting the ECU type, the indicator displays:

— “ECU.0” — M1.5.4;
— “ECU.1” — M1.5.4N or January-5.1;
— “ECU.2” — MP7.0;
— “ECU.3” — MIKAS 5.4, MIKAS 7.1, 301.3763 000-01.

3.8.4 Reading ECU parameters

The mode is entered using the “ECU” key. The indicator displays the symbols “Rs. 1 ", where Рс is an indication of the ECU parameter number, and 1 is the parameter number. The “+” and “—” keys select the parameter number. Switching the display to view the parameter value and back (to view the parameter number) is carried out by briefly (lasting less than 1 s) pressing the “START” key. Use the “+” and “-” keys to view all parameters. The list of ECU parameters displayed on the computer indicator is given in Appendix D.

3.8.5 Reading ECU ID(function not available when selecting ECU type MIKAS 5.4, MIKAS 7.1, 301.3763 000-01)

The mode is entered by pressing the “ECU” key. The indicator displays the symbols “Cu. 3 ", where Cu is an indication of the identification data number, and 3 is the data number. Switching the display to view the data value and back (to view the data number) is carried out by briefly (lasting less than 1 s) pressing the “START” key. The “+” and “-” keys are used to view all data. The list of ECU identification data displayed on the computer indicator is given in Appendix D.

3.9 Parking function

3.9.1 Parking function performed only when the car parking device is connected to the computer. After the vehicle is engaged in reverse gear and the ignition is on, the inscription “rdy” (short for English ready) appears on the indicator for 1 second and three short beeps sound. This means that the car parking device is working properly and is ready for use. If an obstacle is not detected, then the symbols “—-” are displayed in the digital digits of the indicator. If the distance to the obstacle is between 40 and 170 cm, then the distance in centimeters is displayed on the indicator. The direction towards the obstacle is shown by the indicator symbols located below the digital digits: “< » — препятствие расположено слева от автомобиля; « >"—the obstacle is located to the right of the vehicle. If the obstacle is located in the center of the vehicle, both symbols are displayed.

3.9.2 Indication of distance to obstacles accompanied by sound signals (if the “bell” symbol is set on the indicator), which become more frequent as the obstacle approaches. At a distance to the obstacle from 170 to 90 cm, the frequency of sound signals is 3 signals/s, from 90 to 60 cm – 5 signals/s, from 60 to 40 cm – 8 signals/s. When the distance to the obstacle is less than 40 cm, the sound signal becomes continuous and the inscription “StOP” appears on the indicator. Sound signaling when indicating the distance to an obstacle can be allowed (there is a “bell” symbol on the indicator, flashing at a frequency of 1 Hz) or prohibited (there is no “bell” symbol). Resetting and setting the “bell” symbol is carried out by long pressing (more than 2 s) the “START” key. When the “bell” symbol is installed, the sound signal can be turned off until the end of the vehicle’s reverse mode by briefly (lasting no more than 1 s and no less than 0.3 s) pressing the “START” key - the “bell” symbol stops flashing.

3.10 Auxiliary computer operating modes

3.10.1 Correction of fuel consumption readings. Computer readings of fuel consumption parameters may differ from actual values for various reasons: DRT error in cars with a carburetor engine, pressure deviation in the fuel rail, or clogged injectors in cars with an engine equipped with an ECM.

To correct fuel consumption readings, you must enter the “Current fuel consumption” display mode, press and hold the “START” key for 2 s until the correction factor value appears on the indicator flashing.

The nominal value of the correction factor is 100 (in percent). The coefficient value is changed using the “+” or “-” keys, while a larger coefficient value corresponds to an increase in fuel consumption readings, and a smaller value corresponds to a decrease in fuel consumption readings.

To exit the correction mode, press the “START” key.

The correction factor can be determined as follows.

Exhaust fuel to a certain value indicated by the computer's fuel level.
Pour a measured amount of fuel into the tank - for example, 20 liters.
Reset the total fuel consumption readings in the computer, for which, in the “Total fuel consumption” display mode, press and hold the “START” key for 4 s until a two-tone sound signal appears.
Use all the added fuel to the original fuel level reading.
Note the total fuel consumption readings - for example, 25 liters.
Calculate the value of the correction factor: (20/25) x 100 = 80.
Enter the calculated value of the correction factor into the computer. The range of correction factor values is from 50 to 255.
After this, reset the fuel consumption readings.

3.10.2 Correction of on-board voltage readings

The on-board voltage readings are adjusted during the computer manufacturing process and after computer repairs associated with replacing the lithium battery.

To carry out the correction you need:

In the “On-board network voltage” indication mode, press and hold the “START” key for 2 s until the voltage value appears flashing.
Using the “+” or “-” keys, set the voltage value equal to that measured by a digital voltmeter at pin “3” of the computer connector.
Exit the correction mode by pressing the “START” key.

3.10.3 Checking the software version number

To check the version number of the computer software, you need to press the “ — ” key and while holding it, turn on the ignition. The symbols “PR55” will appear on the indicator - where the first digit 5 determines the type of computer (AMK-211501), and the second digit 5 is the current software version number (may differ upward).

4. Installing a computer on a car

The names of the signals and numbers of contacts of the computer plug are given in Table 1.

Table 1

Signal name	Signal designation	Plug pin number
DRT output signal
Diagnostic bus “K-line”
Powering the computer through the ignition switch
DVT output signal
Powering the computer from a battery
Turning on the "backlight" mode
Frame
FLS output signal
DSA output signal

A description of the computer contacts is given in Table 2

table 2


	Fuel consumption signal input. A rectangular pulse signal with a frequency proportional to fuel consumption. The signal source is contact “2” of the DRT or contact “54” of the ECU (fuel injection controller) type M1.5.4 (January-5.1) or contact “32” of the ECU of type MP7.0.
	Line “K” diagnostics. The contact is connected to the contact " M» diagnostic pads for VAZ cars or contact « 11 » diagnostic pads for GAZ cars. Through this line, the computer exchanges information with the ECU. Data is transmitted in the form of a series of pulses with an amplitude from a low level (0 V) to the on-board network voltage. The line passes through the contacts " 9 " And " 18 » control unit of the automobile anti-theft system (hereinafter referred to as APS), which must be closed in its absence or when the APS is not activated. The “K-line” signal from the car parking device is connected to this contact.
	Voltage input from ignition switch. The signal from the ignition switch does not provide power to the computer; it informs the computer that the ignition is on. Used to measure on-board network voltage.

Continuation of table 2


	DVT signal input. The computer sends a +5 V voltage through this circuit through an internal resistor to the DVT, which is a thermistor with the second terminal connected to ground. The sensor changes resistance depending on temperature.
	Non-switchable voltage input. Constant power supply to the computer from the vehicle's on-board network. The voltage comes through the fuse.
	Voltage input for vehicle instrument panel illumination circuit. The signal controls the brightness of the computer indicator backlight.
	Frame. The contact is connected to the car body (ground). The voltage at the contact should be close to zero.
	Fuel level input. The contact is connected in parallel to the vehicle's FLS signal circuit. Connection location: car instrument cluster connector. The signal voltage value is used to calculate the fuel level depending on the type of instrument cluster and the installed fuel level table.
	DSA signal input. A rectangular pulse signal with a frequency proportional to the speed of the vehicle. The signal comes from contact “2” of the vehicle’s DSA or from the output of the instrument cluster (speed signal for the computer) or from contact “9” of an ECU type M1.5.4, January-5.1, MP7.0.

4.1 Installing a computer on a car with a carburetor engine

The computer is installed inside the car in a special slot on the instrument panel (Figure 2) or in any place convenient for observation, taking into account the optimal viewing angle of the indicator, corresponding to the position of the clock hand at 10 hours 30 minutes (to the left and top of the perpendicular to the plane of the indicator), using bracket included in the KMC. Connect the computer and sensors to the car according to Figure 2 using the CMC (positions indicate the elements of the CMC):

Screw V.M6-6g x14.58.016 GOST 1491-80 - 2 pcs
Nut M6.58.016 GOST 5927-70 - 2 pcs.
Washer 6.01.10.016 GOST 11371-78 - 4 pcs.
Hose (outer diameter 14.5 mm) - 2 pcs.
Clamp (inner diameter 14.5 mm) - 2 pcs.
Nut (square) - 4 pcs.
Screw V.M4-6g x12.58.016 GOST 1491-80 - 4 pcs.
Washer 4.01.10.016 GOST 11371-78 - 8 pcs.
Hose (outer diameter 10 mm) - 1 pc.
Plug - 1 pc.
Clamp (inner diameter 10.5 mm) - 2 pcs.
Block X3 - 1 pc.
Harness - 1 pc.
Block X6 - 1 pc.
Bracket - 1 pc.

4.1.1 Installation of DSA

To install DSA, you must perform the following operations:

— disconnect the flexible shaft of the speedometer cable from the gearbox speedometer drive;
— attach to the speedometer drive of the DSA gearbox with a tightening torque of 6 to 8 Nm;
— connect the flexible shaft of the speedometer cable to the DSA output shaft, having previously twisted the protective cap from the DSA.

4.1.2 Installation of DRT

To install the DRT, you must perform the following operations:

— secure the DRT using fasteners pos. 1, 2, 3 on the car body in the engine compartment so that the “Output” pipe of the DRT is located horizontally and below the carburetor fuel supply pipe at a distance of 10 to 20 mm;
— remove the hose connecting the fuel pump and carburetor;
— install hoses pos. 4, connecting the fuel pump with the “Input” pipe DRT and the “Output” pipe DRT with the carburetor inlet fitting using fasteners pos. 5, 6, 7, 8;
— remove the hose from the outlet fitting of the carburetor return line and install it on the “Return” pipe of the DRT;
— put the hose pos. 9 with plug pos. 10, securing it with fasteners pos. 6, 7, 8, 11, to the outlet fitting of the carburetor return line.

Note - When installing DRT on vehicles whose fuel system does not have a return line, plug pos. 10 install on the “Return” pipe of the DRT.

4.1.3 Installation of DVT

Install the DVT inside the front bumper in a hole with a diameter of 12 mm on its lower plane on the left in the direction of travel of the car.

4.1.4 Connecting the computer to the car circuits

Connect the computer and sensors to each other and to the electrical equipment of a VAZ 2108, VAZ 2109 car in the following sequence:

— open the hood of the car. Disconnect the wire from the “-” terminal of the battery;
— remove the handles from the levers of the control panel for the interior ventilation and heating system. Unscrew the four self-tapping screws securing the instrument panel console trim and remove it from the instrument panel;
— remove the socket contacts of the red-black and orange wires from the hazard warning switch block (circuits “15/1” and “30”) and connect them using the block pos. 12 (“X3”) to the plug “X2” of the harness pos. 13. In place of the socket contacts removed from the hazard warning switch block, connect socket contacts “5” (circuit “30”), “3” (circuit “15/1”) of the harness pos. 13;
— disconnect the two-terminal block of the vehicle’s wiring harness of white and black colors, suitable for the illumination lamp of the levers of the ventilation and heating system control panel, and connect to them the corresponding two-terminal blocks “X8”, “X9” of the harness pos. 13 with white and black wires;
— disconnect the wire with a socket contact coming from the FLS from the instrument cluster block in accordance with the vehicle’s electrical diagram and connect it using the block pos. 14 (“X6”) to the block “X5” of the harness pos. 13. In the socket of the instrument cluster block, instead of the removed wire, install socket contact “8” of the harness, pos. 13;
— unscrew the two nuts securing the mounting block and lift it up until a gap forms between its body and the rubber gasket, into which to pass wires with two three-terminal blocks “X1” DRT and “X7” DSA from the passenger compartment to the air supply box. Place and secure the mounting block;
— squeeze the rubber seal out of the hole in the center of the partition of the air intake box and the engine compartment. Insert the sensor wires into the resulting hole. Cut the rubber seal from edge to center, insert the sensor wires into the cut and install the seal in place;
— connect the harness pads pos. 13 to the sensors: block “X1” to the DRT, and “X7” to the DSA. Connect the DVT to the “AMP” block of the harness, pos. 13. Connect the nine-terminal block “XS” of the harness, pos. 13. Insert the computer into the slot on the instrument panel. Depending on the type of instrument cluster, set the fuel level table in accordance with 3.6.

4.2 Installing a computer on a VAZ car with an engine equipped with an ECM

Connect the computer to a VAZ car with an engine equipped with an ECM according to Figure 1 using KMCh1 (positions indicate the elements of KMCh1):

Block X3 - 1 pc.
Block X6 - 1 pc.
Harness - 1 pc.
Bracket - 1 pc.

Socket contact “1” of harness pos. 3 (fuel consumption signal circuit) connect to the vehicle harness connector connected to the ECM, in accordance with the vehicle electrical diagram. Socket contact “9” of harness pos. 3 (circuit with a signal from the DSA), connect to the instrument cluster (if there is an output for connecting a computer) or to the vehicle harness connector connected to the ECM. Plug “X10” harness pos. 3 is connected to the “M” contact of the vehicle diagnostic block.

Note – If the car does not have an alarm system installed, then in the block of the alarm system control unit it is necessary to install a jumper between contacts “9” and “18”. Connect the DVT, FLS, as well as power and lighting circuits in the same way as 4.1.4 or in accordance with the vehicle’s electrical diagram and the purpose of the signals given in Table 1.

Connect the nine-terminal block “XS” of the harness, position 3, to the computer.

Insert the computer into the slot on the instrument panel. Depending on the type of instrument cluster, set the fuel level table in accordance with 3.6.

For a VAZ-2115 car produced after January 1, 2002, with an engine equipped with an ECM, the computer is installed in its standard place without using KMCH1. Connection to the vehicle circuits is made to the vehicle harness block, located in the niche for installing the computer.

Note - the DVT installed in VAZ 2115 cars can only be used in conjunction with one of the devices: the instrument cluster or a computer, while the DVT circuit from the device in which this DVT is not used must be disconnected.

4.3 Installing a computer on a GAZ-3110 car

Installation of the computer on a GAZ-3110 car with ECU MIKAS 5.4, MIKAS 7.1, 301.3763 000-01 is carried out using KMCH2, which includes Harness RYUIB6.640.786 and Bracket RYUIB6.133.502-01. The computer is installed using a bracket inside the car in a place convenient for observation, taking into account the optimal viewing angle of the indicator, corresponding to the position of the arrow at 10 hours 30 minutes (to the left and above from the perpendicular to the plane of the indicator).

4.3.1 Installation work to connect the computer to the circuits of GAZ-3110, GAZ-3102 cars using KMCH2, carry out in accordance with Figure 3 as follows.

Unscrew the four fastening screws and remove the trim of the instrument cluster by lifting it towards you.
Mark and disconnect the connectors for the central light switch and headlight range control. Remove the four screws securing the instrument cluster.
Turn the instrument cluster 90 0 and remove it from the instrument panel. Disconnect the vehicle harness connectors from the instrument cluster.
Remove socket contact “7” from the vehicle harness block “XP2”, insert it into the “X7” block included in the KMCh2 and connect it to the “X6” block of the KMCh2 harness.
Insert socket contact “6” into socket “7” of the “XP2” block. Remove socket contact “5” from the vehicle harness block “XP1”, insert it into the “X8” block and connect it to the “X5” block of the KMCH2 harness.
Insert socket contact “8” into socket “5” of the “XP1” block. Remove socket contact “2” from the vehicle harness block “XP3”, insert it into the “X3” block and connect it to the “X10” block of the KMCH2 harness.
Insert socket contact “3” into socket “2” of the “XP3” block.
Remove socket contact “10” from the harness block of the “XP3” vehicle, insert it into the “X11” block and connect it to the “X9” block of the KMCH2 harness.
Insert socket contact “9” into socket “10” of the “XP3” block.
Pull the wire from contact “2” of the “XS” block of the KMCH2 harness through the rubber seal into the engine compartment of the car to the diagnostic block located on the front panel to the right of the driver.
Strip the insulation from a 5 mm long section of wire (gray with red stripes) connected to contact “11” of the diagnostic block at a distance of 3 cm from the contact. Using the wrapping method, connect the wire to the stripped area and insulate it with PVC tape.
Install the DVT into a hole with a diameter of 12 mm on the front bumper of the car on the left in the direction of travel. Pull the “X4” connector with the wires through the rubber seal into the engine compartment and then connect it to the DVT connector.

Connect the short wire from the “X4” connector to the car body under one of the screws.
Remove the two lower screws securing the front ashtray panel.
Open the ashtray and unscrew the two top screws securing the front ashtray panel.
Pull the front ashtray panel towards you.
Disconnect the cigarette lighter plugs.
Connect the pin block “X2” of the KMCH2 harness to the cigarette lighter connector socket included in the vehicle harness.
Connect the cigarette lighter plug to the “X1” socket of the KMCH2 harness.
Connect the “XS” connector of the KMCH2 harness to the computer connector. Install the cigarette lighter panel and instrument cluster in their places. 4.3.2 Set the type of instrument cluster for GAZ-3110 vehicles in accordance with 3.6.

4.3.3 Select controller type ECU–3 (ECU.3) in accordance with 3.8.3.

4.4 Installing a car parking device

The car parking device consists of a control unit to which a pulse sensor R (right), a pulse sensor L (left) and a harness X1 are connected, as well as a bracket for attaching the sensors to the car (at the discretion of the consumer).

The control unit should be installed in the car interior or in the luggage compartment, the sensors should be installed on the rear buffer of the car.

Connect the car parking device to the car circuits in accordance with Figure 4.

Route the wires of the power supply harness of the car parking device from the control unit to the computer installation location. Remove the female contact of socket “7” from block “C” of the harness connecting the computer to the car circuits, remove the housing “X6” from the female contact of the black wire of the power harness of the car parking device and place it on the socket contact removed from block “C”, connect the female contact in the “X6” housing with the “X5” plug.
Insert the socket contact of the black wire of the power harness of the car parking device into socket “7” of block “C”.
Connect the short red wire to the power supply circuit of the reversing lights; leave the red wire with the socket contact in the “X8” housing unconnected.
Remove the socket contact of socket “2” from the block “C” (if there is one), remove the housing “X7” from the socket contact of the green wire of the power harness of the car parking device and place it on the socket contact removed from the block “C”, connect the socket contact in the “X7” housing with the “X9” plug.
Insert the socket contact of the green wire of the power harness of the car parking device into socket “2” of block “C”.
After completing the installation operations, connect the detachable connectors to the control unit in accordance with Figure 4.

5 List of possible malfunctions and methods for eliminating them

The list of possible malfunctions and methods for eliminating them are given in Table 3.

Table 3

Name of the malfunction, external manifestation and additional symptoms	Probable cause of the malfunction	Troubleshooting method
There is no indication of the “Current time of day” parameter when the voltage of the “Battery” circuit is connected ("thirty")	"5" computer pads
After turning on the ignition switch, only the display mode of the “Current time of day” parameter works.	Malfunction in the contact circuit "3" computer pads	Check the wires and their connections, replace damaged wires or contacts
Failures in computer readings	Unreliable contact in computer wire connection circuits	Check and restore reliable contact in the wire connection circuit
Flashing numbers on the indicator	Correction mode for one of the parameters is turned on	Press the " START»
There is no indication of the “Current fuel consumption” parameter, and the indication of the “Total fuel consumption for the trip” parameter does not increase	Malfunction in the contact circuit "1" computer pads, lack of signals from DRT or fuel injection controller	Check the wires and their connections, replace damaged wires or contacts and, if necessary, sensors
There is no indication of the “Instantaneous speed” parameter, the indication of the “Current fuel consumption” parameter is only in l/h at a speed of more than 20 km/h	Malfunction in the contact circuit "9" computer pads, lack of signal from DSA	Check the wires and their connections, replace damaged wires, contacts or DSA
The voltage readings on the on-board network differ significantly (to a lesser extent) from the voltage on the battery	Large voltage drop across the ignition switch contacts	Clean the ignition switch contacts

6 Transportation and storage

The computer is transported by any type of transport that ensures its safety from mechanical damage and precipitation, in accordance with the rules for the transportation of goods in force for this type of transport. The conditions for transporting the computer correspond to group C of GOST 23216 78 in terms of mechanical influences and group 2 C of GOST 15150 69 in terms of exposure to climatic factors. The computer should be stored in the manufacturer's packaging under 2 C conditions in accordance with GOST 15150 69. The period of transportation of the computer from the manufacturer to the consumer should not exceed 9 months from the date of manufacture of the product. The countdown is based on the product labeling.

7 Manufacturer's warranty

The manufacturer guarantees that the computer complies with the requirements of TU 4573 043 00225331 01 provided that the consumer complies with the conditions of transportation, storage and operation established by this passport.

The warranty period for the computer is 12 months from the date of sale.

The warranty period for storing a computer in the manufacturer's packaging, subject to the requirements established by this passport, must be at least three years from the date of manufacture.

Appendix A (for reference) Parameters of sensor output signals

A.1 The computer ensures reception of a signal from the DSA with the following parameters:

— conversion coefficient (number of pulses per meter of distance traveled)………. 6;

— low-level input voltage, V, no more than ......... 0.8;

— high level input voltage, V, not less than......4.0;

— fill factor Q = (50 ± 30)%;

— duration of the leading (back) edge of the pulse, μs, no more than...50.

The electrical circuit for connecting the DSA to a computer is an open collector n-p-n transistor.

A.2 The computer receives a signal from the DRT or fuel injection controller with the following parameters:

— conversion factor (number of pulses per liter of flowing fuel)……….. 16,000;

— low level input voltage, V, no more than ……… 1.0;

— high level input voltage, V, not less than...... 9.6 (or 0.8 UA, where UA is the voltage on the + 12 V bus of the fuel injection controller);

— fill factor from 30 to 70%.

The electrical connection diagram is an open collector n-p-n transistor with a load resistor to the + 12 V bus of the fuel injection controller.

A.3 DVT parameters are given in Table A.1.

Table A.1

Continuation of Table A.1

A.4 The parameters of the FLS signal of the electromechanical instrument cluster for VAZ cars at a supply voltage of 13.5 V are given in Table A.2.

Table A.2

A.5 The dependence of the FLS resistance on the fuel level in the tank of a car with an electronic instrument cluster is shown in Table A.3.

Table A.3

Fuel volume in tank, l	FLS resistance, Ohm

A.6 The parameters of the FLS signal of the instrument cluster for GAZ-3110 vehicles at a supply voltage of 13.5 V are given in Table A.4.

Table A.4

Fuel volume in tank, l	FLS voltage, V

On cars of the Tenth Family, a clock or computer is always installed next to the display unit. Nowadays such computers are called “on-board computers” (BC). When the ignition is turned off, the computer display shows the time, but this is not its only function! We will list all the capabilities of the on-board computer on the VAZ-2112, and the instructions supplied by VAZ will help us with this. Tables that are important during setup were copied from the instructions.

What bookmaker are we talking about? The answer is given in the video.

The appearance of the front panel is shown in the photo below. You need to remember the main keys: 1, 2, 3 and 5. All functions are divided into three groups. By pressing button 1, you can scroll through the functions of the first group. The same applies to other keys.

Standard BC for the Lada-112 hatchback

The question is, why is button 5 needed? While in any of the three groups, this button activates additional functions. By the way, their number is two.

Each group has different additional functions.

Swipe example

When the ignition is turned off, we see a clock on the display. Let's try to turn on the ignition and press key 1. The button itself can be pressed any number of times - the functions switch cyclically. Their number is three.

Function group "Time"

If you need additional functions, press button 5. We looked at how to use the standard on-board computer on a VAZ-2112, but the instructions are suitable for any “Ten”.

Operation of BC in different modes

The above describes how to use BC in the “Time” mode. The “Time” group is the first, but there are two more – “Fuel”, “Path”. We provide tables for them.

Function group "Fuel"

Above is the table for buttons 2 and 5.

Function group "Path"

The functions activated by buttons 3, 5 are shown here.

Programming instructions

We will change different settings. We’ll also try turning on the alarm, changing the brightness of the backlight, etc. Thus, programming a computer on a VAZ-2112 also applies to operation.

Setting up the fuel level sensor

The tank initially remains empty. Turn on the “Fuel level” function (2-5) and press button 4 for more than two seconds. Next we follow the steps:

Press button 3 for one second until a sound signal appears;
Fill the tank with three liters of fuel. Wait 10-20 seconds and repeat step 1;
Repeat steps 1 and 2 until 39 liters are filled.

Activate the speed warning light

By pressing button 3 we turn on the “Average speed” function. Press key 4. Then use buttons 5 and 6 to set the required numbers. Finally, press button 4.

To disable the option, use a high threshold value: 190 or 200 km/h.

Changing the backlight brightness

Let's use function 1-3 “Time with stops”. Press button 4. Use keys 5 and 6 to make adjustments. Press button 4.

Alarm

Go to the “Alarm Clock” option (an additional function in the “Clock” list). Press button 4. Next, set the hour value (keys 5 and 6), press button 4, set the minute value (keys 5 and 6). By pressing button 4, the alarm clock is activated.

An alarm clock in a car is a necessary thing

All that remains is to figure out how to turn off the alarm clock. Complete all the steps before setting the hour value, and then press button 1. The alarm should turn off!

How to set up your calendar and clock

We have reached the most difficult chapter. Let's get straight to action:

For a quick adjustment, follow step 1 and step 2. If you then press button 1, the clock will round up from 1:57 p.m. to 2:00 p.m. Or in other words: it was 14:05, but it will become 14:00.

Our editorial 2112 with BC Gamma GF 212. We are completely satisfied with it

The most popular non-standard BC for the VAZ-2110 is the Gamma GF 212 model.

Its cost about 2500 rubles . Installation is simple, you just need to connect to the K-line in the diagnostic connector and connect the power wires.

There are such useful functions as blowing spark plugs and so on. We can only recommend it among the large variety of models on the market.

The on-board computer (BC) is an automated vehicle control system. There are several types of BC; to find out which type is installed on your car, you need to read the contents of the sticker on the device. Depending on the type of engine, the corresponding types of BC are selected. The largest number of automated control systems are produced for fuel-injected car engines. Multitronics can be considered the most universal on-board computer for the VAZ 2114.

Purpose of the On-Board Computer

Those who have installed an on-board computer in their car, which is the name of this innovation that provides additional control, believe that its functions can satisfy the needs of even an avid car enthusiast. At first glance, this electronic device demonstrates characteristics that were previously presented on the control panel of various VAZ models, including the 2114. Every car already has a clock, as well as a speedometer (speed meter), tachometer (shows engine speed), odometer (responsible for mileage).

They, however, flaunt quite harmoniously before the driver’s eyes, properly decorated. Yes, and other parameters are present here: how much fuel is in the tank, there may even be thermometer indicators that display indicators of both external and internal air conditions. Everything is done to the highest standards of automotive design. But control systems (on-board computer) are not just different indicators brought together on one screen.

Differences between bookmaker and control panel

Experienced drivers know that the speedometer simply converts engine revolutions into speed, and as soon as you change the wheels to a larger diameter, the speed will increase, although the indicator will work the “old-fashioned way.” In order not to get into trouble at the next traffic police post, you cannot do without a BC. But much remains not taken into account by simple fixators, and on a long journey such factors as actual and average fuel consumption, information about the mileage already covered, the amount of fuel used, etc. will be quite appropriate. These parameters of the VAZ 2114 can be calculated, but is there any time for the driver, who is primarily obliged to watch the road and not do calculations.

The “smart” car 2114 will itself monitor that the car does not overheat in the heat, and the most advanced on-board computers will even alert you to the danger of ice formation in cold weather. The computer will also report the voltage inside the engine system. With such an assistant, the trip will be much safer, over short or long distances. The main thing is not to ignore your computer's warning signals.

It may seem that an indicator appeared on board and began to count indicators. But in fact, the data on the operation of the car’s equipment was already known, it was simply not displayed in front of the driver. However, why was it necessary to turn the interior of a passenger car into a pilot’s cockpit? Connecting the “on-board” (on-board computer) to all existing sensors inside the car, processing the received data and presenting them in a form convenient for the driver - this is the main task that is assigned to the BC.

The task of the On-Board Computer is not only to collect information from the car’s sensors, but also to process it, correct it, analyze it and present it in a form convenient for the driver.

Connecting the On-Board Computer

The VAZ 2114 car model is already equipped with a prepared place for installing an on-board computer. As a rule, a “Multitronics” or “State” computer is very suitable for her. Many car enthusiasts who have experienced all their delights recommend choosing these brands. Moreover, there are versions of this device with a color screen - for amateurs. But this is nothing more than an additional convenience and, apart from “beauty,” is no different from its predecessors.

To connect the on-board computer, you will need to perform some mandatory operations:

First of all, you should connect the device itself to power. For this, direct current +12V, which exists in the VAZ, is used.
In order for the BC to start automatically simultaneously with the engine turning on, the power used to ignite the engine must be connected to it. If you connect the side lights to an electrical source, the computer screen will dim slightly, which is very convenient when it gets dark.
Be sure to connect the ground.
Whether or not to send a signal from the fuel level sensor (FLS) depends on the model of the BC used. Some of them themselves theoretically calculate how much has already been used, depending on the indicators of instantaneous fuel consumption and its initial presence in the tank.
It also remains to connect the “K-line” controller diagnostic line.

If there is no block in the on-board computer

As a rule, for all these procedures it is enough to connect a standard four-pin connector with adapters that are provided with the on-board computers. If it is missing, there should also be no problems. General power can be “borrowed” from the cigarette lighter, autostart can be obtained from the ignition switch, “muffler/dimensions” can be borrowed from the backlight of the same cigarette lighter, and ground can be obtained from the body or again from the cigarette lighter.

To avoid any troubles during the above described actions, the mass of the car battery should be disconnected.

The signal from the fuel level meter (FLS) should be taken from the wire, according to the wiring diagram of a particular VAZ vehicle, as well as connecting the diagnostic line.

However, in the instructions that come with the bookmaker, everything is described in sufficient detail, therefore, strictly following it, it is quite difficult to make a mistake.

Even if you received the “on-board vehicle” as a gift and perhaps without recommendations, you can search for them on the Internet, including on forums. But, as a rule, they are all standard and simply depend on their strict implementation.

A trip with a trip computer, as it is also called, will not bring any surprises on the road. The driver will be able to control the condition of the car independently and there will be no need to go to a service station again for diagnostics (a rather expensive procedure).

Very lucky MK 2114-3857010 turned up for 300 rubles 😉
Since I had been wanting to install an on-board vehicle for a long time, but the prices for it, to put it mildly, were prohibitive, I took it without hesitation! 😊
The router shows all the necessary basic functions.
The backlighting of the display and button labels is made in the traditional VAZ style - green and yellow. When you press the buttons, the MK starts making sounds... booeeee... 😥

Since the old owner was not particularly talkative and did not really explain what was what in this MK, I started looking for instructions for this miracle of technology. The funny thing is that it is not on the drive. There are records about how someone bought and installed the same MK, etc., but no instructions.

After I reset the MK after the old owner, I more or less figured out the functionality:
The MK is reset by disassembling and removing the battery
When you first connect to power, the MK welcomes you by playing midi melodies - a la the old Nokia brick.))))

So, the buttons from left to right:
1 T button
1.1. Travel time without stops. Counts the time while MK is on. You can reset by long pressing on start,
1.2. Total travel time for all trips

IF YOU SHORTLY PRESS START, you can set the backlight brightness using the plus and minus keys. Select a value from 0 to 100%

2. KM/H button
2.1. Average speed during the trip
Clicking on start in this menu turns the notification on and off. (I haven’t figured out what the notification is yet)
2.2. Average speed for all time
If you click on START in menu 2.2, you can set a speed limit for yourself, for example, at 120 km the MK will start squealing

3. KM button
3.1. Trip kilometers
3.2. How many kilometers can you drive before the next gas station?

4. L button
4.1. The number of liters in the tank - after zeroing is not active yet. Most likely it will display how many liters have been filled over the entire time
4.2. Fuel consumed since last refueling

5. L/100 button
5.1. Fuel consumption per 100 km

7. Button H
7.1. Watch. Set by pressing start, then plus or minus
7.2. Date and month. Displayed in the same way as a clock
7.3. Alarm. Placed the same way

The plans are to overexpose it from green-yellow to white or red with an inverted screen.
Overexposing this MK seems to be problematic, since removing the display is a whole story

A computer is an everyday device today that a large number of people encounter both at home and in a large number of vehicles. Speaking more specifically about car drivers, a computer, or as it is more commonly called, an on-board computer, has become indispensable for each of them, because only with its help can one take control of the operation of most units.

Video about the work of a non-standard BC on a VAZ-2114:

If we talk about cars produced in Russia, then the first-born in the AvtoVAZ family was the VAZ-2114, on which an on-board computer was installed directly from the factory, which was able to notify the driver about all the events taking place, both overboard and inside the car. Below in this article we will look in detail at what an on-board computer is needed for, and we will also look at brief instructions for it.

Reasons for installing BC in a car

A standard place in the instrument panel for the on-board computer. There is a blank in the photo.

The first version of the on-board computer installed on the VAZ-2114, although it had few functions, easily monitored the basic parameters of the car:

Fuel level control, and its calculation of the number of kilometers traveled - this function allows the driver to make a decision about refueling in advance.
Coolant temperature monitoring– this function eliminates engine overheating due to timely notification of the driver.
Diagnostics of individual vehicle components– allows you to detect and eliminate problems that have arisen with maximum accuracy, and most importantly mobility.

More information about the functions of the on-board computer

On-board computers on the VAZ-2114 are capable of displaying the following information on their operating screen:

Instant indicators of engine performance, its speed, temperature, readings of real and average fuel consumption.
Information about car mileage, travel time.
The ability to accurately read errors that have arisen in the system, which will allow you to immediately determine whether it is worth contacting a car service about the malfunction or whether it is possible to fix everything yourself.

Modern on-board computers, by type Multitronics - C340 and its analogues can also:

Monitor and inform the driver in advance about the next technical inspection and car insurance, thereby performing the function of an organizer.
Independently change fan activation parameters, change notifications about sufficient engine warm-up temperature.
It is possible to connect parking sensors.

Please note that in order to activate other advanced functions found in your bookmaker, you may need to update its firmware.

The principle of operation of the BC on the VAZ-2114

Not a standard on-board computer

The operating principle of the on-board computer will seem primitive at first glance, however, in fact, it is a technically complex device that simultaneously receives, processes and, if necessary, notifies about the presence of faults. The notification function occurs by displaying a special icon on the screen and giving a certain sound signal.

Brief user instructions

All on-board computers supplied to the VAZ-2114 have their own user manual, and if it is not in paper form, you can easily find it on the Internet; all you need to do is know the make and model of the device. Despite the fact that there are many options and models, their basic functionality is basically the same.

On-board computer readings.

If you are just about to purchase a BC, then you should know whether a specific model is suitable for your car's ECU. As a rule, the seller already has all the information, and this should not be difficult.
It is better, first of all, when familiarizing yourself with the on-board computer, to spend time on the emergency command symbols and visual icons that appear on the display.
Pay attention to the location of the buttons, and the rules for working with them, in order to quickly respond to changes in parameters while driving (on some BC models, the keys can be blocked at a certain vehicle speed - approx.).

Error codes for VAZ-2114

Since the ECU on all VAZ-2114 is similar or at least similar, it makes no sense to write them down in advance, much less remember them, fortunately some models are able to not only display it on the screen, but also voice all the problems present in the car .

The best option for identifying and clarifying faults is a printed version of the error codes for the VAZ-2114. You can get them on the official websites of manufacturers of BCs for the VAZ-2114, and below we will present to you the most common errors that occur on the “fourteeners”:

CodesDescription 0102, 0103 Incorrect signal level of the mass air flow control indicator. 0112, 0113 Incorrect signal from the intake air temperature indicator - the element needs to be replaced. 0115 - 0118 Incorrect signal from the coolant temperature measurement element - the sensor needs to be replaced. 0122, 0123 Interference or incorrect signal from the throttle position control indicator - it is advisable to replace the element. 0300 The on-board computer (BC) has detected random or multiple misfires - in this case, the car may not start immediately. 0201 - 0204 An open circuit was detected in the injector control circuit. 0325 The on-board computer detected an open circuit in the detonation device. 0327, 0328 The knock sensor is malfunctioning - the device needs to be replaced. 0480 The cooling fan has failed - the element needs to be replaced. 0505 - 0507 There are malfunctions in the functioning of the idle speed controller, which affect the number of revolutions (lower or higher). If this code occurs, the regulators must be replaced. 0615 - 0617 During the diagnostic process, breaks or short circuits in the starter relay circuit were identified. 230 This error code means the fuel pump relay is broken - the device needs to be replaced as soon as possible. 1602 It is one of the most common codes when diagnosing fault codes. Indicates a loss of on-board power supply voltage to the electronic control unit.

What to do if the bookmaker stops working

It happens that the bookmaker stops working or the information that it is supposed to transmit and analyze is not transmitted. First of all, you need to pay attention to the integrity of the electrical circuit. Namely, fuse F3, which is responsible for its operation, then you should check the integrity of the wires that go to the diagnostic block and supply it with power. You can find out how to properly connect the on-board computer to the VAZ-2114 system in this article.

It is pointless to describe the process of repairing the on-board computer itself, because such devices do not break down often and are poorly repairable, because they have technically complex mechanisms inside them that require professional tools and skills.

Let's start with the fact that installing an on-board computer in a standard place on a VAZ 2114 and other Samara models is not so difficult. In principle, there is no hassle with wires and nuts in installing an on-board computer (unless, of course, no one tried or changed anything in the car before you). A knowledgeable person will install your on-board computer in about 2 minutes, so you shouldn’t be afraid, put your hands on your feet and go ahead with a song =).

Why do you need an on-board computer?

In previous articles we have already talked about what an on-board computer is, what it is needed for and what types they come in. But let me repeat myself so that you clearly understand all the advantages of having an on-board computer, and there are probably no disadvantages, except perhaps spending money on the purchase and that’s all.

Let's take, for example, the on-board computer STATE 115×24. With this model in your possession, you can:

set the radiator fan start temperature; this function is very useful, for example, in winter, when you can control the temperature of the coolant, thereby monitoring the temperature of the heater radiator.
The function of drying and warming up the spark plugs before starting the engine is very useful.
The function of resetting settings and ECU adjustments is needed to switch to gasoline with a higher or lower octane number (from 92 to 95 and vice versa), and this function is also needed to reset settings after a long trip with increased load on the engine.
The ability to read errors allows you to monitor the condition of the car and change non-working sensors and elements in a timely manner.

Installation instructions for on-board computer

In this article we will look at the process of installing the Prestige on-board computer with diagnostic and error reading functions.

For work we will need:

Screwdrivers,
on-board computer,
wire 1m long.

We remove the plug on the central dashboard and look for a 9-pin wiring block in it. This block must be present on all cars of our model. All that remains is to connect the block to the computer and that’s it, but we need to draw a K-line.

How to draw a K-line?

We take our wire and install it in the second contact of our block.
We throw the opposite end of the wire under the instrument panel down to the diagnostic block (for convenience, you can unscrew the right side panel).
Having stretched the wire to the diagnostic block, we connect it to the “M” socket if you have a EURO-2 block or to the 7th socket if you have a EURO-3 block (it is very common that the diagnostic block for Euro-3 is installed upwards on the car feet, keep this in mind)
Now we connect the on-board computer, insert it into its normal place and check it.

For a more complete and clear idea of the work, a diagram is presented.

What to do if there is no socket for the on-board computer under the instrument panel?

In this case, all that remains is to assemble a new block: buy a 9-pin block and run wires to it according to the following diagram:

fuel consumption signal (green wire)
ignition (orange wire)
+ 12 volts (red/white wire) red wire with white stripe
mass (black)
speed sensor (brown wire)
6k line (most often gray or black wire)
mute (green/red wire) green wire with a red stripe
backlight (white wire, or can be taken from the size button)
fuel level sensor (pink)

Errors when connecting/operating the on-board computer

Error: “No connection with the controller” or “break in the K-line.”

This error indicates that the K-line is not connected or a contact break has occurred. Check the wire according to the diagram described above. Most likely the contact has come off the diagnostic block.

Error: Incorrect readings of the sea temperature sensor.

If your temperature outside is -40, then this indicates that the wire to the temperature sensor has broken, or there is no such sensor at all.

If the temperature is, for example, -25, but it’s only -10 outside, then you need to replace the sensor with a working one.

By the way, it often happens that the on-board computer issues a danger signal for absolutely no reason. The reason for this may be the on-board computer processor or some sensor that is not working correctly. Remember, no one is immune from electronic errors. Nevertheless, in the vast majority of cases, the VAZ-2115 on-board computer works quite correctly.

We present to your attention the most common error codes with their interpretation:
2 – on-board network voltage is exceeded;
3 – fuel level sensor does not work correctly;
4 – the sensor responsible for the temperature regime of the motor is faulty;
5 – outside air temperature sensor transmits warning signals;
6 – motor overheating;
7 – very low pressure is observed in the car’s lubrication system;
8 – some problems were discovered in the braking system;

9 – low battery charge.

If the numbers 4, 6 or 8 appear on the car’s on-board computer while driving, you should immediately stop, fix the problem and only then continue driving. But after this you will need to reboot the processor. The error can be reset by simply holding down the daily mileage key for a few seconds.

What to do if the on-board computer on the VAZ-2115 stops working

Sometimes it happens that even though the car is in full working order, the on-board computer completely refuses to work. What to do in this case?

But before going to the service center, the first thing to do is check fuse F3, which could simply have blown. It is installed in the power supply circuit of the VAZ-2115 processor. If, after replacing the fuse, the on-board computer still shows no signs of life, you can also check the connectors connected to it. We repeat that if you are not an electrician, and generally do not have much knowledge of electronics, this task should be entrusted to a professional.

Remember, any malfunction that the on-board computer shows can be eliminated, just like a breakdown of the on-board computer itself. But, as they say, it is better to prevent a problem than to solve it later. Therefore, each car should be kept in good condition, undergo technical inspection on time and replace spare parts that are out of order. Among other things, it is better not to allow spare parts to break at all, but to replace them as they wear out. Only in this case will driving the car be safe from a technical point of view, and during the trip there will be no emergency situations associated with improper operation of the car.

The serviceability of your car is a guarantee of the safety of both the driver and passengers.