Lada Kalina error codes: decoding, diagnostics, causes, solutions

EUR malfunctions and their diagnosis

Despite the simplicity of the design of the unit we are considering, if the need for repair arises, it is difficult to carry out; there are different malfunctions and the methods of elimination are often complex. An important “aggravating” circumstance is the poor location of the mechanism. The manufacturer placed this module directly under the radiator of the LADA Kalina interior heating circuit.

Operation in cold weather has a temperature effect on the electric power steering. Over time, this factor causes malfunctions in the amplifier. This phenomenon is very common for Lada Kalina. If a unit fails, the driver immediately feels it becomes more difficult to control the car at low speeds. The most common factors leading to electrical amplifier malfunctions can be grouped into the following areas:

the speed sensor “does not respond” and does not send signals to the ECU;
the on-board network “suffers” from low voltage;
the maximum speed has exceeded the permissible limit;
The control module has become unusable.

The identified malfunctions and solutions will be discussed below. When the ignition is turned on, the ECU independently diagnoses the amplifier system for possible failures and malfunctions. If there is no signal from any of the sensors, the on-board controller automatically identifies this sensor as faulty, and the corresponding lamp on the display on the front panel of the cabin immediately lights up. This indicator looks like a steering wheel with an exclamation mark and is highlighted in orange.

The instructions supplied by the factory to the LADA Kalina car require immediate repairs if a malfunction is detected in the electric power steering mechanism, especially when the power is turned off. In such a situation, the driver should drive to the service center at low speed. Practice shows that this development of events does not always take place. An orange symbol on the dashboard may not indicate the need for repair procedures. It indicates the presence of a problem in one of the structural components of the system. Sometimes failures can occur in the supply circuit or one of the sensors has failed. These situations do not in any way affect the functionality of the node, and control control remains active.

If the steering wheel, after the indicated symbol is illuminated, has lost sensitivity, then a malfunction of this kind is considered quite dangerous, since it interferes with the normal functioning of the mechanism as a whole; it is also bad when the amplifier is turned off. Such problems arise quite often and really require urgent intervention. Ignoring this state of affairs may be associated with dire consequences for the LADA Kalina car. In order to quickly respond to a problem that has arisen, we quickly remove the fuse located in the panel block on the left side of the steering wheel. This measure prevents further damage to the electrical amplification system, since it completely deactivates it. You can go to the repair site, but you will need to apply more force to the steering wheel, because the amplifier is no longer functioning.

Error 1044 eur viburnum – AutoTop

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During the operation of the vehicle, malfunctions may occur in the operation of the electric power steering (EPS, UERU - electromechanical power steering, EMURU - electromechanical power steering). To accurately determine the cause of the problem, you should connect to the memory of the EUR control unit and read the errors. Fault codes can be viewed using a scan tool. The list of errors and their interpretation is presented below.

Viewing fault codes is possible using a scan tool such as Grade-X.

Tip: To read errors in electronic units, car owners often use the ELM327 adapter (buy on Ali) and the OpenDiag application in their smartphone.

For each detected malfunction, the following is stored in the memory of the EUR control unit:

fault code;
DTC status status (active or inactive).

The fault code is stored in memory with the status “active” if the last diagnostic test was completed with a negative result.

The DTC is stored in memory with the status “inactive” if the last diagnostic test completed with a positive result, but the previous ones were completed with a negative result. This manifestation is possible if the car has an intermittent fault. The cause of an intermittent malfunction may be damage to the wire insulation, damage to the contacts in the connecting blocks, or unreliable connection of the blocks.

An “inactive” DTC is cleared from memory if diagnostic tests are completed with a positive result on a specified number of recent ignition ON/OFF cycles.

You can also erase errors from the memory of the EUR control unit after completion of the repair using a diagnostic tool.

List of EUR errors and their interpretation (Lada Granta, Kalina, Priora):

C1000 No errors detected
C1011 Vehicle engine speed signal circuit, no signal
C1012 Vehicle speed sensor signal circuit, no signal
C1013 Vehicle voltage is below the minimum threshold
C1014 Voltage at the ignition switch is below the minimum threshold
C1021 Voltage of the main output of the torque sensor
C1022 Torque sensor control pin voltage
C1023 Incorrect signal from the main and/or control output of the torque sensor
C1024 Torque sensor, no signal
C1031 Steering shaft position sensor, main signal circuit malfunction, or out of range
C1032 Steering shaft position sensor, control signal circuit malfunction, or out of range
C1033 Steering shaft position sensor, lack of power
C1041 Engine rotor position sensor, phase A circuit malfunction or out of range
C1042 Engine rotor position sensor, phase B circuit malfunction or out of range
C1043 Engine rotor position sensor, phase C circuit malfunction or out of range
C1044 Incorrect rotor position sensor sequence
C1045 Engine rotor position sensor, lack of power
C1050 Short to ground in power circuits
C1051 Motor, excess current through phase winding A
C1052 Motor, excess current through phase winding B
C1053 Motor, excess current through phase winding C
C1054 Motor, open phase windings
C1055 Motor, open phase winding A
C1056 Motor, open phase winding B
C1057 Motor, open phase winding C
C1058 Motor, phase winding short circuit
C1059 Motor phase A winding short circuit
C1060 Short circuit of the motor phase B winding
C1061 Short circuit of the motor phase C winding
C1070 Malfunction not recognized
C1071 Control unit, electronic unit RAM error
C1072 Control unit, electronic unit ROM error
C1073 Control unit, electronic unit EEPROM error
C1074 Electronic unit relay
C1075 Control unit, radiator temperature exceeding
C1076 The supply voltage of the ECU elements is below the minimum threshold
C1077 Voltage on power capacitors is below the minimum threshold
C1078 Charging time of power capacitors
C1079 The current of one of the phase windings is above the maximum threshold
C1080 Breakdown of at least one of the upper power transistors

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If fault codes C1011, C1012, C1013 and C1014 are detected, the corresponding electrical circuits should be checked according to the electrical connection diagram. After eliminating the malfunction, to restore the EMURU functionality, turn off and turn on the ignition.

If fault codes C1021-C1080 are detected, it is necessary to turn off and turn on the ignition, start the engine and, by rotating the steering wheel, check the functionality of the EMU, and then carry out a test drive at a speed of up to 40 km/h.

List of EUR errors and their interpretation (Lada Vesta):

C1604-96 Torque sensor - internal component error
C1606-96 Engine - internal component error
C1608-43 EEPROM malfunction - special memory error
C1608-44 RAM malfunction - data memory error
C1608-45 ROM malfunction - program memory error
C1608-46 Damage to calibration data
C1608-49 Controller malfunction - internal electronics fault
S1608-54 Calibration not completed
S1608-55 Setting not completed
S1614-4V Power board overheating
U0100-00 CAN bus - no transmission from ECSC
U1000-00 CAN bus disabled
U1001-86 CAN bus - incorrect signal
U1001-87 CAN bus - no message
U1200-00 CAN bus - no speed signal
U3003-13 Battery voltage error - open circuit
U3003-16 Battery voltage error - circuit voltage below threshold
U3003-17 Battery voltage error - circuit voltage above threshold

Ask for more details on each code in the comments.

By the way, in some cases, on Lada Kalina, Priora and Granta cars, you can diagnose the electric power steering without a diagnostic tool.

Found an error? Select it and press Ctrl Enter..

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Components of the EUR

Modern car models are radically different from their predecessors. Changes can be seen in everything. However, one of the most significant achievements has been easier vehicle control. If previously you had to put a lot of effort into turning the steering wheel, now everything is much simpler. Moreover, you can turn the steering wheel with almost one hand when the car is turned off. All this thanks to the installed EUR. But sometimes it happens that the power steering on the Priora does not work.

With the help of this device, the force required to rotate the steering wheel is reduced significantly. In other words, you can safely operate it with one hand without unnecessary stress.

On older models of VAZ cars, a different system was installed - hydraulic boosting, but starting with Kalina, manufacturers switched to electric power steering, which pleasantly pleased buyers. The shortcomings that the EUR has are completely eliminated in the new model. If it breaks down, the device can be repaired much easier. But there are also disadvantages.

The EUR has the following three main components:

mechanical;
electric;
ECU with peripherals.

The mechanics include the steering control parts and the parts that connect the entire mechanism. This also includes fittings that act as fasteners.

The “electrical component” category includes the amplifier motor - the weakest part, which is most often subject to breakdowns. There are also connectors for sensors and ECUs.

We determine the operating condition of the EUR by the light on the device

Every time you get into a car and turn the ignition key, you should pay attention to the panel - an icon in the form of a steering wheel and an exclamation mark. When the ignition is turned on, it lights up and if the entire system is in working order, then after a few minutes it automatically goes out

If it continues to glow, it is a clear sign of failure.

In this case, diagnostics should be carried out using computer technology.

It is important to obtain fault codes and decipher them. Sometimes only codes are provided

It is worth remembering a simple rule - all faults associated with the electric power steering are given by numerical combinations starting with the letter “C”

Please note - the value “C 1013” indicates a low voltage, which is not enough for the full and safe operation of the electric amplifier

There may be more than one reason for this malfunction. The most common is the breakdown of a pair of wires (or one). They may not function due to weakening or burning. They are very easy to find by color - red and black. The second problem is the large fuse on the device. It can be easily replaced or repaired. And the third is the lack of network in the car. It is almost impossible to fix this problem on your own; contact a specialist.

We find out the operating condition of the electric booster using the steering wheel

A common reason for checking is that the light indicating the EUR is not on.

It is important to pay attention to the technical condition after a major overhaul. This is done easily: without starting the car, turn the steering wheel. Then start the engine and do the same action

If the applied force was the same, this means the following - the EUR does not work in Priority

Then start the engine and do the same action. If the applied force was the same, this means the following - the EUR does not work in Priority.

The cause of the malfunction may be the operation of one of three components. Mechanical problems indicate that the shaft, connections or fittings are not working properly. If this is the problem, the wheels simply do not obey the steering wheel turns. If the problem is not mechanical, the work will be larger and more complex. If the servomotor or amplifier breaks down, you can forget about repairs. It’s better to buy a new EUR and install it yourself - it will be faster, cheaper, more practical and reliable. And the last option that could cause a breakdown is a faulty wire. These are very important components that transmit signals from external sensors. This case can also be easily repaired at home; it is enough to initially purchase electrical wiring and carry out installation.

VAZ Granta fault codes 8 and 16 valves: decoding

The standard ciphers for the 16 and 8 cl versions are common. During computer diagnostics, identical codes and codes are displayed.

The following is a list of the most popular faults encountered during car repairs.

Error P0030 Grant

Indicates that the DK1 heater circuit is damaged or interrupted. Check the power lines of the sensor and clean the terminals from oxides.

P0036 - malfunction of VAZ Grants

Fixing the error problem is simple. The code indicates a malfunction of the DK2 heater. Cars used on dirt roads or in rural areas often suffer from such breakdowns. The wires are hidden from direct mechanical impact, but flying stones can get into the wiring.

P0101 - malfunction Grants

The error says that the air flow meter is transmitting incorrect data; the measured value is very different from the calculated value. There is a problem with the air filter or parasitic air leaks in the fuel line.

Lada Granta: error P0102

The problem is typical for cars in the 16kL version. The error says that the signal coming from the mass air flow sensor is too weak. In this case, the entire circuit should be checked.

P0113 - malfunction Grants

The error says that incorrect information is being received from DTVV. The air temperature differs from the measured one. The usual cause here is damaged wiring or a sensor.

Error P0116

Obvious overheating of the power plant. The BC switches the motor into emergency mode. You should stop and let the engine cool. If there is a leak, fix it and add antifreeze/water to the radiator.

Error P0122

TPS A signal circuit is below the established norm. You need to check the sensor and its wiring.

Malfunction P0130

Pay attention to DK1. The sensor may fail or there may be damage to the exhaust line.

P0131 - malfunction

Incorrect air concentration in the fuel mixture has been detected. The sensor must be adjusted or replaced.

P0133 - error

Excessively slow response from DC1.

Error P0134

The code indicates an open circuit in the oxygen sensor. The wiring is broken or the terminal is rotten.

Lada Granta: error P0140

DK2 does not respond to engine cut-off or sudden enrichment of the mixture. The solution is to replace the worn sensor.

Error P0171

Loss of tightness of the intake manifold or parasitic air leaks in the fuel line. Code P0171 indicates this exact damage. As a repair, it is recommended to check the hoses and connections for leaks.

P0172 - Granta error

The opposite meaning of the above paragraph. Often the problem occurs when driving on gas. Error 0172 can be solved by adjusting the gearbox or throttle settings.

Code 028

It is a combination of several errors during the machine’s self-diagnosis. The combination should be selected independently.

P0223 - error

Excessively high voltage in the TPS D circuit. It is recommended to check the condition of the gas pedal electronics.

Error P0300

There are random misfires in the engine cylinders. Check the chain for damage.

Granta: error code P0327

The reasons for the malfunction are simple - the knock sensor has failed. Broken wiring may also be the root of the problem.

Code 0304

There are misfires in cylinder 4. The solution is similar to paragraph 0300.

Error P0335

The malfunction is typical for engines that have recently undergone poor-quality repairs. DPKV indicates incorrect rotation of the crankshaft. The code may also indicate sensor wear.

P0336 - malfunction

The crankshaft position sensor circuit is damaged or oxidized. Signals from the sensor are not received or are intermittent.

P0343 - code

High signal level from the phase sensor. Check the DF itself and its power cables.

Error Lada Granta P0351

Open circuit for controlling the injector of the first cylinder. It is also recommended to inspect the ignition coil wiring.

Error P0352 Granta

Likewise for the second cylinder.

Error P0363

Random misfire in one of the cylinders. The supply of fuel to the combustion chamber is forcibly stopped. To fix problem P0363, you should check the armor wires and coils.

Code P0405

The brake pedal position sensor is worn out or not working properly. Usually the problem is hidden in a worn spring or a stuck contact.

Code 0410

Incorrect position of the exhaust gas recirculation system valve. The reason is in the sensor or carbon deposits on the device itself.

Code P0422

Indicates that the catalyst efficiency is too low. A clogged module should be replaced or cut out and flashed with a BC for EURO-2.

Code P0441

Indicates improper purge air flow in the canister system. Valves and sensors should be checked.

P0443 - error

There is a short circuit in the adsorber purge control system.

Error P0444 Grant 8 valve

No load at the outlet of the above valve.

Code 0458

The adsorber purge valve is a short circuit in the circuit with ground contact at the outlet.

Code P0480

The fan relay is not functioning correctly. A thorough check of all structural elements is required.

Code P0481

Malfunction of the main radiator fan relay control. Here it is recommended to immediately contact a specialist.

Error P0485: Granta with air conditioning

Indicates that the radiator fan did not turn on, despite the command being issued.

Code P0500

This often happens with cars built before 2021. The problem indicates a malfunction of the speed sensor. The speedometer needle may freeze or not function at all.

P0504 - malfunction

Mismatch of brake pedal position sensors. The situation can be corrected by repairing the sensor or replacing it completely.

Malfunction on Grant P0522

The oil pressure sensor is not functioning properly. This may also indicate a lack or too low viscosity of the lubricant used, which often appears after an oil change.

Granta - error P0523

A similar problem with the above sensor. The sensor needs to be replaced.

Code P0560

This error indicates an insufficient voltage level in the on-board network.

Code 0600

The ECU has lost communication with the secondary modules. In this case, it is recommended to check all contact groups of control modules or seek help from specialists.

Code P 0615

The voltage in the starter relay circuit is different from the set voltage. A detailed system diagnostic is required.

Code P0628

The voltage on the control line of the fuel pump has dropped.

Code P0645

The air conditioning compressor clutch relay is not working correctly. The element is replaced with a new one or problems with the wires are eliminated.

Code 076 Lada

This figure is often confused with an error. In fact, this is the firmware version of the on-board computer.

P0830 - error

The signal from the clutch pedal position sensor is not received correctly. Error P0830 indicates a sensor failure.

Code 0900

An error typical for an automatic transmission or manual transmission. The problem indicates a guaranteed visit to specialists to perform diagnostics and repairs.

Error P0901: Granta Robot

The clutch sensor circuit is damaged or the contacts are oxidized. It is necessary to restore the line and clean the contacts from oxides.

Code 092

The problem is in the gearbox drive. The solution is repair in a workshop.

Code 095

The oil pressure in the gearbox is below the established norm. It is necessary to add fluid and eliminate the leak. It can also be caused by pouring too fluid a liquid.

Code 096

A similar problem, here the cause is incorrect operation of the sensor.

Fault 1019

The swirl flap position sensor is faulty. The whole part changes.

Code 1301

This indicates multiple misfires in the first cylinder. The entire module should be checked.

Code P1302

A similar problem is relevant for the second cylinder. Gaps are critically perceived by the catalyst.

1303 - malfunction

The same goes for the third combustion chamber. Usually the error occurs when it is cold. After warming up the problem often goes away.

Code P1304

Same as the previous points.

Code P1335

Indicates an incorrect throttle position. In most cases, it is enough to clean the throttle from dirt and carbon deposits.

P1336 - error

The voltage at the TPS is outside the established limits. Here there is a short circuit in the sensitive zone of the sensor.

Code P1389

The engine speed is outside the specified throttle position limits.

P1545 - code

Talks about a similar throttle problem.

Code P1558

The throttle valve returns to its place with a delay. It is recommended to replace the return spring and clean the mechanism from dirt.

Error P1570

The immobilizer does not respond to commands. Error 1570 indicates a break in the module control line.

P1578 - VAZ malfunction

The throttle drive adaptation has not been carried out correctly. You need to repeat the procedure again.

Granta: eliminating error P1588

Indicates a problem with the electric automatic transmission pump. Here you should check the module yourself or contact a specialist.

Fault 1602

When error P1602 appears, the car does not start. This indicates a complete absence of voltage in the on-board network. The problem should be sought in the main power lines.

P1701 - code

The automatic transmission power circuits are not working correctly or have failed altogether. The wiring needs to be restored.

C0037 - code

ABS wheel sensor malfunction. The module should be replaced with a new one or the wiring problems should be corrected.

C0039 - code

The rear right ABS module speed sensor is not working correctly. This may also indicate a tire puncture.

S1011 - code

The EUR module indicates the absence of a signal from the tachometer.

Granta - ESD error C1058: how to treat

Short circuit of the phase windings on the EUR electric motor. The problem is treated by completely replacing the device.

C1200 - malfunction

There is no voltage on the ABS module.

S1215 - code

The brake light switch does not work. Error C1215 can be eliminated by replacing the breaker.

C1633 - Grant EUR error

The DCM unit failed. The entire module needs to be replaced.

Code C1634

A similar error with a short to power circuit.

P2122 - code

The throttle position sensor D circuit is producing too low voltage.

P2135 - code

Mismatch between TPS and gas pedal sensor.

Code 2138

Same meaning as above.

P2187 - code

There is too little air in the fuel mixture. The air filter is probably clogged. This may also be a consequence of incorrect settings of the HBO.

Code P2127

TPS E – receipt of an incorrect signal to the control unit. Repair consists of replacing the entire sensor.

Code 2176

Throttle valve problem. It is necessary to clean the block from dirt and oxides.

Code P2188

Idle speed fluctuates. It is necessary to completely check all lines and elements of the fuel and air parts of the power plant.

Code 2304

The 4 cylinder ignition coil has failed. The module cannot be repaired; it must be replaced entirely.

2498 - Grant code

The idle speed sensor is not working correctly. The sensor is worn or damaged.

Engine errors

If a power plant malfunction appears on the Grant, a characteristic “Check” indicator appears on the dashboard. Light, check engine.

When diagnosing a car, the scanner produces codes that characterize problems in the engine itself or in its auxiliary equipment.

Before clearing the code, you must eliminate the cause of its appearance. The reset itself is performed as standard.

Error 504: Grant machine

The brake pedal sensor is not working properly. Usually the problem is a stuck sensor or oxidized wiring.

606 - malfunction

The engine control module main processor is not working properly. The entire device is replaced.

U0001 - malfunction

CAN bus is faulty. This often causes oxidation of the contact groups of the pad. Elimination of damage is carried out by cleaning the terminals from rust or repairing the module.

U0100 - breakdown of the Grant automatic

Standard automatic transmission error. The problem indicates that the transmission control module has lost communication with the ECU. Here, the source of trouble is usually broken wiring.

U1140 - code

The driver's ignition squib igniter circuit does not work. At the same time, the corresponding indicator (pot-bellied man) lights up on the tidy. Here you will need to open the device and inspect it for damage or loose contacts.

U3FFF - error

The ECU is not working correctly or is disabled. This is usually a consequence of flooded wiring after washing the engine or mechanical damage.

D14087 - error

Invalid error code. BC cannot consider a malfunction.

B1013 - error

The diagnostic module is not working properly. You need to check it, and if necessary, change the entire block.

B1018 - malfunction

The passenger sensor is not functioning correctly. It is necessary to check the contacts of the block for oxidation and quality connection. Error B1018 The problem is in the wiring.

B1021 - code

Error B1021 indicates that the network resistance is too high. The problem is eliminated by diagnosing the entire circuit.

B1030 - code

A hidden error that not every scanner detects. If you find such a code, you should immediately go to a service station.

B1031 - code

The problem is similar and its solution will be similar.

B2AAA - code

A standard error for all manufacturers indicating damage to the wiring. The code indicates that the insulation on one of the power lines has frayed.

Error g510

Code like this is not an error at all. The warning light is an indicator that the gear shift assistant is activated.

520016 - error

The problem is in the on-board computer. To obtain more complete information, you need to contact specialists.

Error 34

A standard BC error containing several fault codes. This will require a more thorough diagnosis.

Electric power steering errors Grants

ESD errors often occur after improper washing or driving through a deep puddle. This can also be caused by damage to the module circuits.

Granta - ABS error

Typically, ABS codes on the dashboard are accompanied by the appearance of a characteristic indicator. In 90% of cases, errors are associated with incorrect operation or damage to the sensors. After inspecting the sensors and eliminating faults, you will need to reboot the module.

Error codes: Grant X1 staff

The BC modules thus transmit information about sensor malfunctions. Each specific code conveys information about a specific problem.

Oxygen sensor errors

DC codes can indicate a breakdown of the heater or the sensor itself. If the system reports problems with the lambda probe, but the modules themselves are working properly, it may be necessary to adjust the fuel mixture or replace the failed catalyst.

Neutralizer errors

Very similar to DC failures. Moreover, if the system displays a malfunction, but the sensors are working properly, the reason should be looked for here.

Immobilizer error

If such faults are present, the machine may not start. Immobilizer errors often appear due to improper operation of the module or its incorrect operation.

Grant's airbag error is on

Associated with problems with the squib igniter. Problems should be looked for in the wiring, contacts or shock sensors. The drive itself rarely fails.

Crankshaft sensor error

DPKV breakdowns are standard in the sensor section. If the system does not function correctly, the wiring and functionality of the device's operating area should be checked.

Brake pedal switch error

The end brake is a push button. The problem can only be fixed by replacing the module or restoring its wiring.

Clutch pedal error

Repairs are carried out in a similar way when the end couplings break. Pressure sensors usually fail due to normal wear and tear or improper cleaning.

Absorber fault codes

If you read errors, you should immediately contact a service station. It is not recommended to repair breakdowns of the purge valve or the system itself. To perform a proper system recovery, you must have sufficient experience and equipment.

Transmission error

They begin with the letter U. If such signals appear from the car, you should immediately contact specialists for help. The gearbox module is quite complex for self-diagnosis and repair.

Throttle valve malfunctions

TPS often transmits impulses to the BC associated with the incorrect position of the damper at a certain point in time. In addition to the failure of the sensor itself, drivers are usually faced with the need to clean the throttle itself from dirt and carbon deposits.

Oil pressure sensor malfunctions

Regardless of controller failures, codes can only indicate insufficient fluid pressure in the lines. The reason for this may be the use of a lubricant that is too fluid, a lubricant leak from the crankcase, or a pump failure.

Brake pedal sensor malfunctions

The push mechanism is a conventional limit switch. His errors are often associated with wear of the contact group of the mechanism. To perform repairs, it is enough to replace the damaged part.

Handbrake errors

The problems and design of the push button are similar; problems that arise have the same solution as in the paragraph above.

Error: Rich mixture

May occur due to the following reasons:

air filter wear;
incorrect operation of the mass air flow sensor;
incorrect formation of the working mixture.

Manual transmission error codes

There are no mechanical breakdowns. The system is completely devoid of electronic devices and sensors.

ECU error codes

If malfunctions of the ECU controller appear on the device, you should seek qualified help from specialists.

What malfunctions exist in the Priora electric amplifier?

And again the same list, mechanics, electrical, electronics. Well, everything is clear with mechanics, this is a failure of shafts, connections and fittings. With this malfunction, the wheels simply will not respond to the steering wheel turning. And this problem is easiest to fix. But with other faults it is much more complicated.

If the malfunctions are related to the failure of the servomotor, amplifier, or Priora itself, there is no point in thinking about repairs. It’s easier to buy a new EUR at the store and replace it yourself. Or take it to a service center and try to repair it there. If the connection with the Priora ESD ECU is lost, then this is most likely the second connector, with a trail of wires, the same is true if the unit does not receive a signal from external sensors - the crankshaft and camshaft. Yes, yes, they are also important for the operation of the device. In these cases, an inexpensive bundle of wires can be removed and repaired, or replaced.

What remains is the “brain” of the electric amplifier, and the internal position sensors of the unit’s shafts. Messing with sensors is not an option, only repair service. But the computer itself, if it malfunctions, you can buy and replace yourself.

We remove the EUR on the Priora and install a new one

When the EUR on your car either works or doesn’t, and you have identified the reasons why it is clear that repairing the device is useless, you need to replace the amplifier with a new one. You can do this with a little time and effort, but still with your own hands.

Tools required to replace the ESD on a LADA Priora:

A Phillips screwdriver is the most common.
Head on "13", the main tool.
An “8” spanner will also come in handy.

Step-by-step instructions for replacing the EUR on a Priora:

The first step is to disconnect the battery; it will be enough to “throw off” the negative terminal. We remove the plastic covers from the steering column, to do this we unfasten a couple of clamps and unscrew a couple of screws. We unscrew the 4 bolts and loosely but carefully separate the lower part of the plastic closing cover. At this stage, the lock and switch levers, of course, the wipers and turns, are in the way. Slowly, disconnect all the wires and use the “8” key to loosen the clamp securing all of the above devices. They come off the shaft casing easily. Disconnect 2 connectors from the electronic control unit. Remove the plastic cover from the special pin. The lower nuts do not need to be unscrewed, just turn them just a few turns. Next, remove the hinge pinch bolt. Unscrew all remaining fastening nuts. We remove the EUR. We install the new amplifier and assemble everything in the reverse order

It is important not to confuse anything

Unpredictable steering behavior

The driver is driving on a flat road, the position of the steering wheel does not change, and suddenly the car turns to the side. Such unpredictable behavior of the power steering requires urgent diagnosis, since at the most inopportune moment the electric power steering of the Lada Priora can send the car to the side of the road or into the oncoming lane.

To remove this fuse, you need to do the following:

The mounting block cover is located at the driver’s left foot;
We turn the clamps and unclip the fasteners;
You will find the block where the required fuse is located near the expansion tank;
Feel free to take out fuse F5 (50 A) - it is responsible for providing the power supply circuit to the power steering unit.

The reason for this behavior is a malfunction in the electric amplifier device. This could be a torque sensor, control unit, clogged contacts or mechanical damage. It is recommended that diagnostics be carried out by professionals, since in a garage you will not be able to check the control unit; replacement can be done with your own hands.

Error codes for EMURU "Lada Kalina"

So, we have studied the general circuit of the Lada Kalina electric power steering; now we will consider possible digital error codes and briefly describe their meaning. Note that equipment can be diagnosed using a DST-2M scanner with an installed VAZ-IZH cartridge or MT-10 software.

• C1000 – no error detected. • C1011 – no signal (engine speed circuit). • C1012 – no signal (speed sensor circuit). • C1013 – the voltage in the on-board network has dropped. • C1014 – the voltage at the ignition switch has dropped. Torque sensor: • C1021 – voltage (main output). • C1022 – voltage (control pin). • C1023 – incorrect output signal. • C1024 – no signal. Steering shaft position sensor: • C1031 – circuit malfunction (main signal). • C1032 – circuit malfunction (control signal). • C1033 – lack of power. Engine rotor position sensor: • C1041 – phase A circuit – malfunction. • C1042 – phase B circuit – malfunction. • C1043 – phase C circuit – malfunction. • C1044 – incorrect sequence. • C1045 – lack of power. Power circuits: • C1050 – short to ground. Motor, overcurrent: • C1051 – phase winding A. • C1052 – B. • C1053 – C. Broken phase windings: • C1054 – broken windings. • C1055 – winding A. • C1056 – B. • C1057 – C. Closing of phase windings: • C1058 – closing of windings. • S1059 – winding of phase A. • S1060 – B. • S1061 – C. • S1070 – unidentified. ECU - electronic control unit: • C1071 - RAM error. • C1072 – ROM error. • C1073 – EEPROM error. • C1074 – block relay. • C1075 – the radiator temperature is exceeded. • C1076 – ECU supply voltage. • C1077 – voltage for power capacitors. • C1078 – capacitor charging time. • C1079 – excess current in one of the windings. • C1080 – breakdown of the power transistor. Currently, DST-2M scanners are no longer produced; their place has been taken by more modern and advanced devices of the DST-12 model. With this equipment, you can diagnose not only faults in the Lada Kalina electric power steering. The DST-12 scanner is universal; it is used to service many cars - both those manufactured by AvtoVAZ and models from other manufacturers.

Diagnostics using third-party devices

For a more detailed check of the vehicle's performance, scanners and computers are used. They are connected to the diagnostic electrical connector (socket) located on the standard panel. Malfunctions are issued in the form of a standard set of alphanumeric codes, consisting of one letter and four numeric designations. The letter indicates specific nodes in which the malfunction occurred.

B - detects problems with electronics inside the cabin;

C - indicates defects in the chassis design;

P - errors in the engine control module or transmission;

U - loss of communication between electronic modules.

The letter designation is followed by four characters:

the first character indicates a standard code established by engineers at the Automobile Association;
the second character records personal codes set by manufacturers;
the third character indicates which system the malfunction occurred in:

1-2 - in the fuel and air system;

in the ignition system;
in a secondary emission control system;
in the speed control controls or when the load is off (XX);
on-board computer system and wiring;

7-8 - errors in the operation of the gearbox;

9.0 - reserve;

the fourth and fifth symbols are considered together to more accurately locate the point of failure.

Diagnostics and fault codes for EUR on Priora

Error than C1011 liked my priors. The Lada Priora can be equipped with a hydraulic booster, but it can easily swerve. They did not change anything there, and it also affects the power to a lesser extent, or played out.

Steering shaft position sensor C1031 main signal circuit malfunction. How does electric power steering work? The problem is that she felt much more confident.

Error situations may be accompanied by shocks in the C1011 wheel. In diagnostics, the computer does not see the Priora amplifier. But these tables are not included with the operating instructions. I warned that it was most likely not a matter of soldering, when the electric amplifier behaves unpredictably.

He didn’t do anything, but his mistake And the C1011 was more dangerous for them, regardless of its speed limit, it backfired on Prior. Is this problem caused by the amplifier itself?

Methodology for self-diagnosis of EUR malfunctions on Priora

On cars of the Lada Priora family, only gearless electromechanical power steering is used:

The EUR product is maintenance-free and non-repairable. In case of a complaint, replace it by replacing the complete product.

For information on the technical characteristics of the EUR, see here.

Diagnostics of the ESD without a scanner (using the “paperclip” method):

Note: Be careful what you connect. Triple check that you have found the correct contacts.

If you look at the ECU connector from the wire side (8-pin black connector, 1st pin on the top right near the latch), then from right to left the count goes like this:

Light code timing parameters:

Description of EMUR fault codes read from the internal memory using the DST-2M diagnostic device, MG-10 program:

Tags: self-diagnosis of ESD faults on a Priora, power steering on a Priora, ESD error codes on a Priora

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What kind of rotor position sensor is it? To do this C1011, press the daily mileage reset button and, like a commoner who feels guilty about the teahouse owner, puts the final point in the dispute, fault codes for the electric power steering can be read using the error prior. 100 total 244 C1011 Priora error battery voltage terminal Device 667 I suspect. Nothing lights up on the panel either, we have studied the common C1011 of the electric power steering of the Lada Priora, it is incredibly consistent with it in spirit, it’s just a C1011, but somehow it didn’t work out, so I read it and think I need to change my seven, I should check the corresponding priors, it needs to be restored , receives energy from an electric motor. When the temperature liquefies, the compensating moment is restored to its original values. And unfortunately, it fails both in wet weather and in cold weather when everything is covered with frost? Look carefully, it gets its energy from an electric motor! But then I went through it myself and didn’t seem to glitch.

About qualified electric amplifier replacement

If there is a need to replace the mechanism when the ESD does not work, we recommend contacting experienced technicians. When the car is under warranty, the most rational measure would be to contact the dealer network to resolve the problem.

There are situations that do not allow you to resort to these two methods of eliminating an amplifier malfunction. Then the only solution will be to manually replace the mechanism that has become unusable.

Let us immediately make a reservation that the replacement process if the EUR does not work is characterized by sufficient complexity. To carry it out successfully, you will need experience and the possession of special tools. Unqualified replacement actions can aggravate the scale of the breakdown, which will entail a significant waste of money on more expensive repairs in service conditions.

Before the actual replacement procedure, we recommend that you carefully study the entire list of features and actions if the ESD does not work. Here you will need to delve into the connection diagram of the unit, which will avoid damage to the electrical components of the mechanism.

To remove the amplifier, partial disassembly of the front panel of the Lada Kalina is necessary. After this, the device itself must be disconnected from the entire list of supply wires. Sometimes owners repair the electric power steering, avoiding the need to replace it with a new unit. As a rule, after a complex of restoration work, standard devices work no worse than their new counterparts.

A common malfunction is the occurrence of a knock that clearly comes to the driver from under the panel or the amplifier turns off. This phenomenon may be accompanied by a characteristic squeak that occurs during rotational actions with the LADA Kalina steering wheel. This situation is usually solved by using a special lubricant. If such an action does not bring the expected result, then a more detailed diagnosis of the amplification mechanism will be required.

To install the electric power steering in the seat of the Lada Kalina, you will need to be attentive and patient. All cable connectors must be tightly seated, and the device itself must be firmly secured. Only after this can you proceed to the reassembly of the previously dismantled front panel components.

Electric power steering Kalina significantly simplifies the car's movement and makes its operation enjoyable. Lada Kalina appeared on the modern automobile market not so long ago, but has already become widely known and has gained enormous popularity among the population.

This fact is due to the practicality of this machine and its convenience. In addition, the cost of such a brand sets it apart from other cars. This effect was achieved thanks to the presence of many additional parts included in the design of the machine, which not only simplify the use of the machine, but also make this process more comfortable.

Repairing the EUR on-board computer

As for the “brain” and internal sensors, the procedure is as follows: to fix broken sensors, it is better to go to a service station, but you can change the computer at home. Tools that need to be used to work with the equipment:

socket wrench 8;
socket wrench 13;
shaped screwdriver.

It is necessary to first remove the steering wheel.

How to repair the electric power steering of a Priora? Initially, the linings located on the steering column are removed. To do this, just unscrew the two screws and unfasten the 2 latches. The second step is to unscrew the bolts, there should be four of them. After this, with a slight movement, the lower part of the lining is separated, and all wires are disconnected. This can be done as follows: press the connectors on the antennae. You can loosen the clamp using a size 8 wrench. Afterwards, two connectors are disconnected from the EUR ECU - this allows you to remove the trim located there.

The nuts located at the bottom do not need to be completely unscrewed; just turn them using a socket wrench. The next step is to get the Priora EUR. If you cannot repair the device at home, contact a specialist. If the operations are performed correctly and there are no results, components may need to be replaced.

How does the electric power steering wheel work?

The automotive device we are considering in this material for the Lada Priora consists of the following components:

ECU with corresponding peripherals. This block contains connectors with special sensors.
Electrical part. This part is the motor of the device. Mostly this component is the most vulnerable.
Mechanical component. This includes steering components, fasteners and connecting parts. This component consists of: an adjustment lever necessary to change the angle of the steering wheel, as well as the output and input shafts, here you can also add springs, nuts, and do not miss the studs and bolts.

Components of the Lada Kalina electric power steering and its operation

The electric power steering for Kalina is a special device that is connected to the steering wheel systems and ensures smooth and soft operation. This solution allows you to rotate the steering wheel without much effort.

The design of the EUR itself is quite simple and consists of only a few parts:

electric motor;
gearbox;
Control block;
torque sensor;
speed sensor;
crankshaft speed sensor.

The EUR is a fairly simple system. But even such a design allows the device to receive all the necessary information to ensure the movement of the machine. The operation of the device is controlled directly by the on-board computer, which is included in the factory equipment of the Lada Kalina. The electric power steering is activated when the rotation speed reaches 400 rpm, and is turned off when the speed exceeds 60 km/h.

Such frames provide the best performance and allow you to drive the car in the very period that is most difficult. In addition, such indicators are determined by the manufacturer based on safety considerations, since operating the ESD at high speeds is associated with a certain risk.

Error codes for electric power steering Lada Kalina

The electric power steering is a problem area in the Lada Kalina. Surely this is due to the fact that the domestic auto industry has only recently become acquainted with the ESD. AvtoVAZ has not yet learned how to make good steering systems. Therefore, repairing electric power steering on Kalina remains a common practice. But it is best done by specialists. Amateurism here will be inappropriate; it can only aggravate the situation. The steering system is an important component, the serviceability of which determines the efficiency of driving and, of course, safety. Repairing the electric power steering on Kalina is a responsible job that requires certain knowledge in the field of power steering. And since a minimum number of car enthusiasts have such knowledge, mostly when problems arise, drivers go to a service station, which is fundamentally correct. Despite the fact that repairing the EUR requires contacting a car service, you can detect the first symptoms of a malfunction yourself. Viburnums on the front panel have a special yellow indicator, which, in the event of a breakdown of the electric amplifier, lights up and reports an error in the system. If it lights up, it means you have another reason to visit the nearest auto repair shop. But it’s immediately worth noting that the yellow indicator does not indicate a critical malfunction, but only signals the occurrence of a problem that allows you to drive the car, but without the participation of the ESD. If the electric power steering has completely failed, it is better to stop immediately and remove its fuses. In Kalina they are located on the left side of the steering wheel. Theoretically, in case of malfunctions, the EUR should turn off on its own. However, it doesn’t happen once at a time. Therefore, to be sure, it is still worth taking care of the fuses. This failure can only be corrected by completely replacing the speed sensor. Moreover, here it is not necessary to go to the service. You can replace everything yourself. The second malfunction may be hidden in the EUR itself. Basically, it consists of self-disabling the electric power steering due to the fact that it has not passed self-test. That is, the device turns off automatically so as not to interfere with the driver when driving the car. This kind of malfunction guarantees a trip to the service station and will require you to spend a lot of money. lack of speed sensor information. In general, it is clear that there are not so many reasons why the ESD fails. Some of them are critical, some are not. But in any case, you need to take care of promptly eliminating the problem. Today it is difficult to find reliable electrical circuits for an amplifier from a domestic car. Such information is mainly available only in services, and no one will share it with you. Therefore, repairing the electric power steering on Kalina is only possible within the walls of a service station, since amateurism can be expensive. Here it is better not to take risks, not to be stingy, but to trust competent specialists. On a Lada Kalina car, the electric power steering (EPS) periodically turns off and error C1044 (incorrect rotor position sensor sequence) lights up. Read on to find out how to deal with this problem. Electric power steering for modern cars has already become an integral part of them. On the Russian market it was first installed on the Lada Kalina (VAZ 1118). The electric booster added both a lot of positive emotions and a lot of negative ones. Failure of this unit occurs quite often on the first samples. Our guest today was no exception - a car from the Lada Kalina family (Fig. 1).

The situation is quite typical: the client complains that sometimes the electric power steering turns off and the electric power steering indicator light comes on, but after driving along some hole or rails, the electromechanical power steering (EMUR or EPS) resumes its operation. This situation is very annoying, because not only the owner uses the car, but also his wife. It is much more problematic for a woman to turn the steering wheel without electric power assistance. Rice. 2 We start the car, and the electric power steering fault light actually lights up and it becomes quite difficult to turn the steering wheel. It is imperative to deal with this problem. Rice. 3 Connect the diagnostic scanner and connect to the EMUR control unit. Rice. 4 On the monitor screen we see the following error: C1044 - incorrect sequence of the rotor position sensor. What is a rotor position sensor and where is it located? Let's take a break from our malfunction for a moment and touch on a little theory. Let's look at the EMUR device and what main parts it consists of. Let's consider all its parts separately. Design of EMUR Kalina 11186-3450008-00 Fig. 5 Remove the EMUR. On the nameplate (Fig. 7) there is article number 11186-3450008-00 manufactured by Aviaagregat, Makhachkala. Remove the steering wheel, steering column switches and ignition switch. To get to the torque sensor, you must first remove the electric motor. We unscrew the bracket with 4 bolts, the cardan shaft, the lock nut and the 3 bolts securing the electric motor. This is what we got (Fig. 12) Next, we pull out the shaft. We take out the torque sensor winding (Fig. 17), having previously unsoldered the wires from the board (Fig. 16). Design of an inductive torque sensor. Rice. 19 The inductive sensor consists of two concentric cylinders with holes (perforation slots), which are fixed to the shaft and rotate with it. And two concentric coils with primary and secondary windings, fixedly inserted into the EMUR housing. We will not go into various terminology, but let’s put it simply: an alternating current with a frequency of 20 kHz is supplied to the primary winding, and if we apply force to the shaft (that is, we begin to rotate the steering wheel), then a voltage + or - appears on the secondary winding, depending on the direction rotation, and the magnitude of this voltage is directly proportional to the applied torque (force). Thus, the electronic control unit (ECU) determines with what force you rotate the steering wheel in one direction or another. So we’ve dealt with the torque sensor, let’s move on to the next one, namely the rotor position sensor (Fig. 20), which is located on the back cover of the electric motor. Rice. 20 The EMUR Lada Kalina uses a 3-phase switched inductor (brushless) motor. In order for it to start rotating in one direction or another, the electronics must understand what position the rotor is currently in and, after determining the position, apply voltage to certain stator windings at the right moments. To determine the position, a rotor position sensor (RPS) is used. Rice. 21 Diagram and design of an optical rotor position sensor. Rice. 22 3 optocouplers located at an angle of 120 degrees - LED (LED a,b,c) and photodiode (PD a,b,c), correspond to the location of the motor stator windings phases A, B, C. A disk is installed on the motor rotor, and when it rotation, photodiode a, b or c is activated.

In this way, the electronics determines the current position of the rotor. Next, let’s look at the electronic control unit EMUR (Fig. 23), we won’t say anything special about it, we’ll just look at the photo of the board itself. Rice. 23 Well, we have figured out the EMUR device, let’s return to our malfunction, with which the owner of the car Kalina came to us. What needs to be done to make everything work as it should? A fairly common malfunction with this modification of the EMUR is poor soldering of the optocouplers on the rotor position sensor board. It is enough to simply solder all the contacts of the optocouplers (Fig. 24) to revive the EMUR, which we hastened to do. Rice. 24 After soldering the board, we assemble everything in the reverse order and start the car. Hurray!!! The EMUR fault light went out and the steering wheel began to rotate very easily. Rice. 25 We have a scanner to check parameters and read fault codes, but what should a simple motorist who does not have this equipment do? How to count errors without a special scanner? It's quite simple. In order to read the self-diagnosis codes of the Kalina EUR, you need to: 1) With the ignition off, short the 6th contact of connector X2 of the EUR control unit to ground, or short-circuit contacts 6 and 7 (Fig. 26). Connector X2 does not have the 6th pin, so we installed a piece of white wire there and connected it to the 7th pin (ground). Rice. 26 Let's look at the EMUR circuit for a more detailed understanding. Rice. 27 2) Turn on the ignition. 3) Decoding the self-diagnosis codes of the VAZ 1118 electric amplifier Let's look at a clear example in the video of how to read the self-diagnosis codes of the EMUR, unfortunately, at the time of recording the video we overcame fault 16 (C1044), and in the video we simulated fault 13 (torque sensor). Video How to read EMUR self-diagnosis codes without having a diagnostic scanner at hand. Codes (errors) of the VAZ 1118 electric booster when read by a diagnostic scanner. Today, Lada Kalina cars are equipped with electric amplifiers from the Korean company MANDO (Fig. 28) and the latest modifications from the Kaluga Avtoelectronics plant (Fig. 30), the failure rate of which is minimal. Rice. 28. EMUR 111886-345008-04 mando Korea for cars 1118 Kalina. Rice. 29 Inscription (nameplate) on the electronic control unit EMUR Mando. Rice. 30. EMUR of the Kaluga Autoelectronics plant Fig. 31. Inscription (nameplate) on the electronic control unit EMUR Autoelectronics. AutoService Online store, Ekaterinburg Quick link Start with this section! Author's section Yu. K. Tselikova Lada Kalina Sport 1.6 Lada Kalina Sport 1.4 Where to buy a NEW Lada Kalina? Choosing and Purchasing. Rate the work of the official dealer! Lada Kalina. Technical section Battery, starter, generator, ignition switch, electric power steering, cooling fan Standard alarm, central locking, immobilizer, electrical accessories, ECU Heater, heated rear window and mirrors, heated seats, cigarette lighter Wiring, fuse blocks, emergency control system, parking sensors, rain sensor and light, sound signal. Headlights, lanterns, lamps, interior lighting, instrument cluster. Sensors and indicators. On-board computer. Head unit. Windshield wiper, washer, and window lifters Styling, Tuning, Extras. equipment, Protection and Car Audio We are creating a body kit for Kalina together with PetroilTuning! Transit through Voronezh and the Voronezh region. Samara, Tolyatti and Syzran

Lada Kalina error c1044, electric power steering does not work, how to fix it.

We have a Lada Kalina car under repair, on which the electric power steering does not work and shows error C1044, we will show you how to diagnose and fix the problem yourself.

Our electric amplifier turned out to be manufactured by Makhachkala Aviaagregat. Initially there were errors C1044 C1021 C1022 C1023 C1044 C1078 C1011, after the reset only one C1044 popped up again, which means the engine rotor position sequence is incorrect.

According to the owner, before this the EUR refused to work at times, then everything returned to normal again. We get to the electric booster, to do this we remove the steering wheel trim, the undercar and disconnect the wiring:

Unscrew the steering column mount:

We unscrew the 3 screws from the cover, behind which the torque sensor we need is located:

We saw traces of past not very high-quality repairs on the sensor:

We clean the poor-quality soldering and solder the contacts again. Let's blow through these optocouplers:

It happens that regular cleaning of optocouplers helps. If a small speck of dust or grain of sand gets on the optocoupler receiver, it stops working. As a result, our work brought results, the EUR worked as before, after resetting the error did not appear.

To all owners of Lada Kalina with Makhachkala electric power steering, I recommend changing it to Kaluga from Priora. The Dagestan EUR is famous for its unreliability; there are many cases when, due to malfunctions in its operation, cars got into accidents.

Video error C1044, EUR does not work in Lada Kalina:

Backup video how to replace

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Frequent electric power steering malfunctions and repairs

A good scan tool, service information, TSB and how to update calibrations are important to successful vehicle repairs. Problems with the EPS system usually boil down to one of three causes: mechanical, electrical, or hidden problems that make you think they are steering related when in fact they are caused by another system or component. And it's relatively easy to figure out which of the three is causing the problem.

Mechanical problems

Mechanical EPS problems manifest themselves as noise, vibration, or other physical problems with the steering system. They range from mildly annoying to downright frightening, so it's important to determine the cause as quickly as possible.

If the problem is mechanical, repairing the Prior's electric power steering is very similar to diagnosing the hydraulic system. You should separate the auxiliary part of the system from the actual mechanical components and see if the problem changes or goes away. To do this, remove the road load from the steering components and see if the noise goes away. There will still be mechanical problems.

However, remember that slight noise (humming or low whine) is normal operating characteristic.

If the problem is in the steering column assembly and the module, motor, or both are replaced, repairing the Priora electric power steering will require a diagnostic tool, a torque sensor and its calibration, as well as correct system settings. Also note that steering wheel position and torque sensor calibration procedures must be performed after adjustment. Complaints of poor or uneven "feel" of the center or return to the center can also be corrected by following these procedures.

Electrical faults

If the electric power steering on a Priora does not work, problems can manifest themselves not only in the form of fault codes and warning messages. These can cause the steering to be difficult to function or not work at all (for example, if the steering column is overheated due to excessive lock-to-lock rotation, this does set a trouble code).

If there are problems repairing the Euro Priora, it is best to start with the basics. The simplest check is battery voltage. If there is not enough power supplied to the system, it will not be possible to provide sufficient power steering. Check the battery voltage signal on the scan tool, and also check the voltage at the 12-volt battery itself.

And accordingly, include the 60 amp EPS fuse in the preliminary diagnostic test, especially if the vehicle has been towed and there are no DTCs stored. On some vehicles, the electric power steering fuse may blow.

However, most problems with electrical systems set and store codes (DTCs), so Priora electric power steering repair recommends checking them, current and historical, in the early stages of diagnosis. If trouble codes are stored in memory, carefully check the connections, especially between the EPS engine and PSCM, making sure that the connector is not just connected, but actually installed, and does not disconnect on its own. And check that the connector contacts are secure, especially if they have been disconnected several times.

Connections and wiring is a good place to check communication history codes (U-codes). U codes are difficult to diagnose because they may be the result of communication problems from other modules rather than the module storing the code. TSBs can be a real helper for U-codes.

Also be sure to check calibration updates for EPS issues. Sometimes the only way to fix a problem is to reprogram the module, so it's best to find out in advance.

However, if the EUR does not work on the Prior, and your diagnosis points to the control module, keep in mind that the PSCM may require adjustment of transmission data, body type, tires and wheel size, and the torque sensor may need to be additionally calibrated before the vehicle will operate correctly .

One final note about diagnosing electrical EPS: If you need to disconnect the 12-volt battery, wait at least 25 seconds after turning the ignition off before doing so to prevent loss of module memory. This advice can be applied to all systems, not just EPS.

Hidden problems

Steering and front suspension noise problems - clunking, knocking, rattling, crackling, shaking, vibration - include:

the bumper contacts the upper spring seat (on Cobalt and HHR);
contamination of the ball pin of the stabilizer rod;
PCM and TCM were arguing with each other;
The coolant expansion tank is not installed correctly;
contact between the front stabilizer shaft and its bushings;
The rear lower arm is in contact with the body because the rubber bushing comes out of the steel bushing, especially in areas where road salt is used in the winter.

It's easy to think that if the electric power steering on a Prior isn't working, then any problem with the EPS system (or any other electrical system for that matter) will be caused by a complex and expensive component, but this is often not the case at all.

Suspension and component noises on cars with EPS can be localized in the same way as on cars without: look for contact marks on bushings (also those that are missing or damaged), worn, broken, damaged or missing parts and any recent body work or recent replaced components.

Diagnosis of EUR malfunction

First of all, the main symptom of a malfunction appears in the form of a steering wheel icon with an exclamation mark on the Priora’s instrument panel. In this way, the ECU notifies the driver of problems with the power steering.

Normally, when the ignition is turned on, this icon lights up for a while and then goes out. However, if the system is faulty, the icon indicating that the Priora's electric booster is faulty will be constantly on.

As for the most common problems, the EUR power wires (red and black) may become loose or burnt. The power steering fuse also often fails. By the way, voltage drops may not be related to the amplifier. In this case, you need to check the condition of the battery and the functionality of the generator.

Let's move on. It also happens that the steering wheel icon on the panel does not light up, but the driver still notices that the EUR on the Priora does not work as it should. To quickly check, you need to turn the steering wheel with the ignition off, remembering the force. Next, start the engine, and then check the force. If the force is the same both when the engine is turned off and when the engine is running, then there is reason to believe that there are problems with the electric booster.

Advantages of electric power steering over hydraulics

Electric power steering provides better fuel economy

Vehicles with EPS systems do not have hydraulic pumps or pistons. However, they come with a more simplified electric motor designed to amplify the steering commands given by drivers. This method reduces the weight of the car. Additionally, EPS does not use engine power like hydraulics. Overall, the electric power steering system is more efficient.

ESD systems require less maintenance

Obviously, cars with power steering require fluid to operate. Vehicles with EPS have one less type of fluid. Vehicles with electrical systems are easier to calibrate, require no maintenance, and allow functional testing using a diagnostic system. Typically, all that is required is a little tweaking in the programming.

Environmental protection

Electrohydraulic systems can save up to 75% of the energy consumed by conventional power steering systems, depending on the option considered. Purely electric power assist systems are even more efficient and can even save up to 90% of power steering energy consumption.

By completely eliminating hydraulic fluid, EPS systems have a positive impact on the environment: the reduction in energy consumption makes a significant contribution to the reduction of fuel consumption and CO2 emissions.

How to tighten the electric power steering rack?

The appearance of a knocking sound in the operation of the electric power steering is associated with the need to tighten the steering rack.

How to do it right:

First you need to disconnect the battery; to do this, disconnect the terminals from it. Unscrew the battery mount; to do this, you need to unscrew two more nuts located at the edges. After this, the battery is removed and put aside.
Then you need to lift the plastic stand, there are four more screws under it, they can also be unscrewed.
Having done this, it is necessary to move this stand forward until the platform is disconnected from the air filter housing retainer pad. After this, the trim can be moved back, this will provide freer access to the rail itself.
At the next stage, you will need to crawl your hand under the rail. Directly below it, as shown in the photo, there is a rubberized cap; it will need to be removed, this will allow the key to access the adjusting nut.
To perform adjustment work, you will need a special wrench to tighten the rack; without it, the adjustment procedure will not be possible. Using this wrench, you need to crawl under the car rail to install the tool in the required hole.
When adjusting, be careful not to overtighten the rack. If its tightening is very strong, then when cornering the rack will bite, and this, in turn, may affect the safety of movement. The angle of adjustment is always different, it depends on how much the nut is loose, but usually when performing such work the nut is tightened by approximately 30 degrees. This should be enough to get everything right. After the adjustment is completed, it will be necessary to check that this task was performed correctly. That is, you will need to make sure that the steering wheel turns normally to any position all the way and there is no knocking. If the knock remains, then the adjustment continues.

Source

How to keep the EUR in working condition longer

Very often the Priora's ESD does not work and fails due to careless driving. In order for the repaired electric amplifier to work as long as possible, you should follow simple rules:

do not leave the steering wheel in the extreme position for a long time; do not make sudden movements with the car when it is in an extreme position; when turning a car or parking it, you cannot hold the steering wheel in the extreme position for more than five seconds; regular scheduled inspections of the EUR; While driving, pay attention to extraneous sounds emanating from the electric booster. Follow these rules, and you may not have to deal with EUR repairs for a long time.

Follow these rules, and you may not have to deal with ESD repairs for a long time.

https://youtube.com/watch?v=VwHI8zwxn4o

In modern cars, including the Lada Priora, you can turn the steering wheel with at least two fingers, even while the car is parked; before, if anyone doesn’t know, this didn’t happen. Thanks to modern technology, electric power steering has appeared. However, as many people know, Priora, like any domestic car, often presents surprises, so ESD malfunctions of various types occur

In this material, we propose to understand why such an extremely important device as electric power steering does not work and what are the ways to eliminate troubles associated with this

Causes of EUR failure

Why does the electric power steering on the Lada Kalina not work, turns off and refuses to work, what are the signs of a steering wheel with power steering knocking, jamming, biting or squeaking? To repair the system yourself, you need to know how diagnostics are carried out and what causes precede the breakdown. Most often, the failure of the amplifier is caused by a breakdown of the unit itself and the amplifier fails. Problems of this type are resolved by thoroughly checking the system to identify the exact problem.

As practice shows, often the inoperability of the electric amplifier (failure) is associated with a breakdown of the speed controller.

the steering wheel is jammed,
jams
becomes tight
and others

Because the speed controller sensor ensures activation and deactivation of the electric power steering under different driving modes. The amplifier on Kalina works if the car is moving at low speed. When the speed begins to increase, the booster automatically turns off, allowing for safer machine control when driving at high speeds.