c1058 prior error how to fix the error

Electric power steering does not work on Priora: looking for reasons

Previously, VAZ installed hydraulic power steering on its models, but over time it was decided to abandon such a mechanism. The first model equipped with ESD was LADA Kalina. The transition to electronics was caused by significant disadvantages of hydraulics before it. So, there is some loss of engine power, you need to regularly check the level of the working fluid, as well as diagnose the oil supply system. However, the electric amplifier also has its negative aspects. For example, it is somewhat inferior in power to power steering.

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.

Why the electric power steering does not work on a Priora, possible reasons

Next, some reasons will be listed due to which the electric power steering on the Priora stopped working.

EUR does not pass self-test

When the ignition is turned on, the electric power steering does not undergo self-monitoring and turns off on its own. Thus, it will not interfere with the driver and contribute to the creation of an emergency situation while the car is moving. If the EUR does not pass the self-testing procedure, the repair will cost you a pretty penny.

Speed sensor faulty

The point here is that the electric booster scans data about the speed of the car from the speedometer, which, in turn, receives signals from the speed sensor. If the sensor fails, false information begins to be supplied to the speedometer. The situation causes the electric booster to spontaneously deactivate. The problem can be solved simply - replace the sensor with a new one.

Battery problems

Quite often, a malfunction of the EUR, which requires a voltage of 13.5 V for its uninterrupted operation, is accompanied by its drop. Here, the first thing you need to do is diagnose the battery; the problem may be there. By the way, it would be a good idea to check the generator.

Wiring problems

Another reason why the EUR does not work on a Priora may be damaged wiring. Weather disturbances such as frost, heat, and precipitation can also aggravate the situation. If they replace each other and the EUR starts to act up, then you simply cannot do without researching the wiring. You need to check the soldering and insulation, perhaps there is a short somewhere.

EUR control unit

A completely miraculous situation can happen when the wheels of your car change direction on their own, without your participation. The reason is simple - the filling of the electronic control unit of the power steering unit is “weird”, on which, for the sake of economy, the developers did not work seriously enough. At the same time, such a problem should not arise on copies of recent model years. In any case, if you notice that the electric amplifier has begun to live its own separate life, immediately contact a service station for help.

Owners of the Priora model should also remember that the electric power steering on their car does not work all the time. The electric motor takes on the most load at low speeds or when the car is stationary. The electric engine is loaded to a minimum only at high speeds, and this is where an unexpected circumstance makes itself felt. The fact is that when the speedometer needle touches 110 km/h, the EUR will stop performing its direct duties. This is noticeable immediately, as the force on the steering wheel becomes maximum. By the way, owners of Lada Kalina are even less fortunate; there the electric booster is de-energized already at 60 km/h.

So, we figured out why the electric power steering turns off on a Priora, and now it’s time to move on to diagnosing problems.

C1058 motor short circuit of phase windings of Priora repair

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Sergey_karb

I'd rather replace it too. EUR is a responsible thing and affects safety.

But if it’s really tight, the power transistors are poorly soldered and this shows a short circuit in the windings. You can try soldering it to defeat the C1058.

Frantisek

mixture

Tutmas

Images:

euro priora.jpg

Frantisek

I'd rather replace it too. EUR is a responsible thing and affects safety.

But if it’s really tight, the power transistors are poorly soldered and this shows a short circuit in the windings. You can try soldering it to defeat the C1058.

Vladimir 136

yeah. and while driving, you can unexpectedly turn the steering wheel all the way in one direction. the paths of electrons are inscrutable, but life is one.

So it seems that after 20 km/h it reduces its assist moment, and after 60 km/h it turns off. this is enough to make a bad landing. and cunning guys-lawyers will quickly take you by the ass - they will say that this guy did something chemical to the electronics of the electric power steering, and as a result, God forbid, an accident

Frantisek

yeah. and while driving, you can unexpectedly turn the steering wheel all the way in one direction. the paths of electrons are inscrutable, but life is one.

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.

Advice

: 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 DTC is stored in memory with the status "active" if the last diagnostic test completed with a negative result.

The DTC is stored in memory with a status of "inactive" if the last diagnostic test completed with a positive result, but 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

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

How to check the electric power steering on a Priora

Here you don’t need to think too hard to figure out that the ECU warning light on the dashboard has come on - something wrong is happening with the system. This is the very first sign that is difficult not to notice, and specifically, you will see a glowing symbol in the form of a steering wheel with an exclamation mark located next to it. When the ignition is activated, the icon will light up for a short period of time, and after that, if the computer determines that everything is normal, the light will stop. But in the event of any breakdown in the electric power steering system, the icon will not go out.

Personal diagnostic scanner

In this case, our diagnostic maneuvers will affect the electronics, which is a very correct decision. Now the market offers special diagnostic devices that are affordable for every Priora owner. In addition, even an inexperienced motorist can deal with them. Their cost is reasonable considering the fact that they will serve you well. You will have to pay up to 1,300 rubles.

Diagnostics of EMURU without a scanner

In the absence of a scanning device, fault codes for the electric power steering can be read using the “paperclip” method. To do this, you will need to perform the following steps: 1. Turn off the ignition; 2. Close contacts No. 6 and 7 at the 8-pin connector of the control unit (control unit), which is located next to the power connector. 3. Turn on the ignition. You will be able to “read” the codes by the flashing diagnostic light. Which contacts need to be closed? Look at the control unit connector from the wire side (we remind you that it is 8-pin, black). We consider the first contact to be the one located at the top right and count from right to left: 1. Ignition switch (+12V) – blue. 2. Tachometer – red-brown. 3. Car speed – gray. 4. EMURU control lamp – white and pink. 5. K-line – black and yellow. 6. L-line – empty contact. 7. Mass – brown. 8. Empty contact. If you are planning to independently repair the Lada Kalina electric power steering, you need to remember, or better yet, write down the following data: Light code parameters (temporary): 1. Initial pause - duration 2 seconds; 2. Long signal – 2 seconds; 3. Short signal – 0.5 sec; 4. Pause between signals – 0.5 seconds; 5. Pause between codes – 2 seconds. Decoding the light code of faults: 1. “11” - the system is working; 2. “12” - there is no engine speed signal; 3. “13” - torque sensor; 4. “14” - EMUR engine; 5. “15” — sensor PRV (steering shaft position); 6. “16”—PRD sensor (engine rotor position); 7. “17” — on-board network; 8. “18” - control unit; 9. “19” - vehicle speed sensor. That's all the basic information you need to know on this issue. We hope that you understand - if the electric power steering of the Lada Kalina does not work, there is no need to panic and run to a car repair shop; repairing the device is quite possible even for a non-professional. We are confident that this information will provide you with significant assistance in operating and maintaining your vehicle.

Electric power steering is a component used to provide more comfortable driving. Not so long ago, domestically produced cars began to be equipped with EUR, in particular, in this article we will talk about Lada Kalinas. What malfunctions can occur with the Kalina EUR and what troubleshooting methods are there? Find answers to these and other questions below.

Causes of EUR failure

Dismantling and disassembling the electric amplifier

How to tighten the electric power steering rack?

Photo gallery “Adjusting the steering rack”

How can I lubricate and adjust the EUR?

Electric power steering connection diagram with icons

Video “Guide to repairing an electric booster in a garage”

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