ECU January 5.1 and January 7.2 comparison and features - detailed analysis.
I, too, at one time, automatically identified January - and there were glitches, then I turned on manual mode and installed BOSCH 7. Review of each family of ecu January 5.1 and January 7.2. Features of each ecu family, comparison and interchangeability. The blocks being considered are: January 7.2 2111-1411020-82 21114-1411020-32 21124-1411020-32 21067-1411020-11 11183-1411020-21 January 5.1 2112-1411020-41 211 1-1411020-71 2111-1411020-61 2112-1411020 -71 2104-1411020-01 The main difference between January 5.1 and January 7.2 is the treatment of the detonation channel. On 5.1, due to the presence of the HIP9010 processing processor, the channel is hardware, on 7.2 there is no processor, the channel is software. ECU January 5.1 detects detonation better than 7.2. In addition, January 7.2 can control the starter. The difference between the computers of each family January 5.1 and January 7.2 lies in the firmware designed individually for each engine model and the configuration of sensors. For example, in January 5.1.3 there is no knock sensor and phase sensor, in January 5.1-41 they are present.
Removal and replacement of ECUs on VAZ 2110, 2111 and 2112 vehicles
So, the first thing you need to do is disconnect the negative terminal from the battery. Now it's worth noting that to do this simple job you will need the following tool:
- Socket head for 10.
- Ratchet handle.
- Phillips blade screwdriver.
When you get to the engine control unit, you need to disconnect the plug with the wiring harness from it, after opening the metal latch:
Now you need to unscrew the two nuts securing the “brains”, as shown in the photo below:
When these two nuts are unscrewed, you need to slightly move the bar to the right to release it from its engagement:
After which you can carefully remove the ECU:
It is worth noting that if the controller fails, a new one must be installed the same as it was before - from the factory. The price of new controllers can range from 4,500 to 10,000 rubles, depending on the type and year of manufacture of the car. Installation is carried out in reverse order.
Source
Program for computer diagnostics of VAZ.
As I did, with a digital camera, we set it to macro photography, raise the flash and put our hand with the camera on the computer and take a photo, everything is clearly visible, even the dust. KKl VAG adapter for computer diagnostics: Order and do the diagnostics yourself! Another program for home diagnostics of injection cars using a KKL adapter and laptop. The functionality of this program reminded me of working with the Scanmatic scanner. Great opportunities for diagnosing various parameters of injectors. It is possible to create your own sets of parameters, which is very convenient when diagnosing various sensors. You can create a diagnostic kit for, for example, an oxygen sensor and include the necessary parameters to test it. The program also has auto-detection of the ECU, which makes life very easy when you don’t know what kind of unit is in the car.
Location of the control unit on the VAZ 2110-2112
So, the “brains” are located directly under the instrument panel, namely in its lower part. To get to them, you need to remove the plastic panel on the passenger side, which is shown in the photo below, using a Phillips screwdriver for this:
And in the depths of this whole heap of wires and relays with fuses, you can find the controller itself, which is screwed in a horizontal position on the bar:
Now, below we will look at the procedure for removing and installing the controller.
Signs of the need for internal combustion engine repair
The reasons why the operation of the engine is disrupted are arranged in a small list, starting with refusal to start and ending with floating idle speed (this problem was removed on the 127 “engine”). Not all breakdowns end in capital damage - sometimes it’s enough to add oil, sometimes it’s enough to adjust the ECU settings.
Compression reduction
A decrease in cylinder compression below 16 atmospheres is a bad sign. Such a high limit corresponds to a compression ratio of 11.
Knocks in the engine
Engine knocks can come from several points. These could be hydraulic compressors, timing belt rollers or pins. The knocking noise could also be caused by low oil level. The answer to the question will be given by a thorough detailed inspection of all parts of the unit and checking the oil level.
Blue smoke from the exhaust pipe
The blue smoke that comes from the exhaust pipe appears when oil enters the combustion chamber. It can leak either from the valves or from under the piston. The result is the same: the oil is eaten up and blue smoke pours out of the chimney. Once the leak is located, half the problem will already be solved.
Troit motor
Sometimes in the cold the engine may stall - don’t be alarmed by this, because it may simply be one of the spark plugs that fails. In this case, we advise you to simply restart the engine and it will stop running.
How much does it cost to overhaul a Priora engine - average price
Self-repair of a Priora engine with 16 valves costs an average of 16-20 thousand rubles. The cost depends on the severity of the breakdown and may be lower or higher than this average range. Repairing a Priora engine can be entrusted to the wrong hands, but then you will have to pay for the work - sometimes the cost of repairs reaches as much as 40 thousand rubles.
This is an unreasonably inflated figure, because, as practice shows, you can rebuild the engine on a Priora, working at a moderate pace, in just three days - and three days of work is definitely not worth that kind of money. Don’t be afraid of not being able to cope - your Lada is easy to repair, and using the advice and “tutorials”, you will conquer even such a task that is impossible at first glance.
Description
The main device of the VAZ-2114 ECU is a microprocessor. Its main task is to fully control all engine systems when starting it and during operation in different modes and under different loads.
The electronic system, using a certain algorithm, collects all the data from the sensors into a single whole and then processes it. The “brains” of the VAZ-2114 work with this data in order to give an adequate response to any changes in the vehicle systems, and then adjust the operation of all systems to the standard established by the manufacturer.
The electronic control unit also controls the actuators in the vehicle. This is a ventilation, power supply, ignition, diagnostics, and idle system.
How to remove the ecu on a VAZ 2110
For removal we will need a ratchet with a 10mm head and a Phillips screwdriver.
We remove the plug, disconnect all the wires and you can remove it.
Unscrew the fastening using a ratchet with a 10mm head.
Common VAZ 2110 ECU errors
Decoding the error code of the ECU on the VAZ 2110: 0102 - Low signal level of the mass air flow sensor 0103 - High signal level of the mass air flow sensor 0112 - Low level of the intake air temperature sensor 0113 - High level of the intake air temperature sensor 0115 - Incorrect signal of the coolant temperature sensor 0116 - Invalid coolant temperature sensor signal 0117 - Low coolant temperature sensor signal 0118 - High coolant temperature sensor signal 0122 - Low throttle position sensor signal 0123 - High throttle position 0130 - Invalid sensor signal oxygen sensor 1 0131 - Oxygen sensor signal low 1 0132 - Crankshaft sensor signal high 1 0133 - Oxygen sensor slow response 1 0134 - No oxygen sensor signal 1 0135 - Oxygen sensor heater fault 1 0136 - Oxygen sensor 2 short to ground 0137 - Low Oxygen sensor 2 signal level 0138 - Oxygen sensor 2 signal high 0140 - Oxygen sensor 2 open 0141 - Oxygen sensor 2 heater malfunction 0171 - Mixture too lean 0172 - Mixture too rich 0201 - Injector 1 control circuit open 0202 - Injector 2 control circuit open 0203 - Open injector control circuit 3 0204 - Open injector 4 control circuit 0261 - Short to ground in the injector 1 circuit 0264 - Short to ground in the injector 2 circuit 0267 - Short to ground in the injector 3 circuit 0270 - Short to ground in the injector 4 circuit 0262 - Short to ground +12V injector 1 circuit 0265 — Short to +12V injector 2 circuit 0268 — Short to +12V injector 3 circuit 0271 — Short to +12V injector 4 circuit 0300 — Many misfires 0301 — Misfires in cylinder 1 0302 — Misfires in 2 cylinder 0303 - Misfire in cylinder 3 0304 - Misfire in cylinder 4 0325 - Open circuit of knock sensor 0327 - Low signal level of knock sensor 0328 - High level of knock sensor signal 0335 - Incorrect signal from crankshaft position sensor 0336 - Error in signal from crankshaft position sensor 0340 — Phase sensor error 0342 — Low phase sensor signal 0343 — High phase sensor signal 0422 — Low converter efficiency 0443 — Malfunction of the canister purge valve circuit 0444 — Short or open canister purge valve 0445 — Short to ground canister purge valve 0480 — Malfunction chain strength cooling fan 1 0500 - Incorrect speed sensor signal 0501 - Incorrect speed sensor signal 0503 - Interruption of the speed sensor signal 0505 - Idle speed controller error 0506 - Low idle speed 0507 - High idle speed 0560 - Incorrect on-board voltage 0562 - Low on-board voltage network 0563 - High voltage on-board network 0601 - ROM error 0603 - External RAM error 0604 - Internal RAM error 0607 - Malfunction of the detonation channel 1102 - Low resistance of the oxygen sensor heater 1115 - Faulty oxygen sensor heating circuit 1123 - Rich mixture in idle mode 1124 - Lean at idle 1127 - Rich at Partial Load 1128 - Lean at Partial Load 1135 - Oxygen sensor heater circuit 1 open, short 1136 - Rich at Light Load 1137 - Lean at Light 1140 - the measured load differs from the calculation of 1171 - the low level from the potentiometer 1172 - the high level from the potentiometer 1386 - the error of the detonation channel test 1410 - the adsorber purge control circuit short circuit for +12V 1425 - the adsorber blowing valve short -shorting for Earth 1426 - circuit - circuit - circuit control circuit of the canister purge valve open 1500 - Open circuit of the control circuit of the fuel pump relay 1501 - Short to ground of the control circuit of the fuel pump relay 1502 - Short circuit to +12V of the control circuit of the fuel pump relay 1509 - Overload of the control circuit of the idle speed regulator 1513 - Circuit of the idle speed regulator short circuit to ground 1514 - Idle speed control circuit short circuit to +12V, open 1541 - Fuel pump relay control circuit open 1570 - Incorrect APS signal 1600 - No communication with APS 1602 - Loss of on-board power supply voltage to the ECU 1603 - EEPROM error 1606 - Rough road sensor incorrect signal 1616 - Rough road sensor low signal 1612 - ECU reset error 1617 - Rough road sensor high signal 1620 - PROM error 1621 - RAM error 1622 - EPROM error 1640 - EEPROM Test error 1689 - Invalid error codes 0337 - Crankshaft position sensor, for mooing to ground 0338 - Crankshaft position sensor, open circuit 0441 - Air flow through the valve is incorrect 0481 - Cooling fan 2 circuit malfunction 0615 - Starter relay circuit open 0616 - Starter relay circuit short circuit to ground 0617 - Starter relay circuit short circuit to +12V 1141 - Malfunction oxygen sensor heater 1 after the converter 230 — Fuel pump relay circuit malfunction 263 — Injector driver 1 malfunction 266 driver 2 malfunction 269 — Injector driver 3 malfunction 272 — Injector driver 4 malfunction 650 — CheckEngine lamp circuit malfunction
Where are the VAZ 2110 ECUs (the brains of the car)
If you are wondering where the ECU (the brains of the car) is located on the VAZ 2110, you can look at these photos where it is located ↓
Removable plastic and brains directly under the instrument panel, namely in its lower part.
In the depths of the wiring and bundle of wires and relays with fuses, you can find the controller itself, which is screwed in a horizontal position on the bar.
Self-diagnosis systems
Like any computer, the Priora ECU has feedback from the user.
The driver learns about problems using signal codes, which can be seen in two ways: using an additional on-board computer connected to the diagnostic connector, and on the instrument panel after performing simple manipulations.
For self-diagnosis, you can install the following devices:
- State X 1 P Priora. A small device that is inserted in place of a standard button. Has an LED display with 3 characters. In addition to the diagnostic function using 30 parameters, it allows you to warm up the spark plugs during cold periods, independently regulate the temperature at which the cooling system fan turns on, and reset engine errors.
- Priora State Matrix. A more serious on-board computer. It is placed in place of the standard clock and has a graphic display of 128 x 32 pixels.
In addition to the functions listed on the previous computer, the device can work with gas equipment, reading gas consumption. The “Afterburner” function allows you not only to reset engine errors, but also to roll back the controller to its factory state, thereby resuscitating it. After activating this option, the “Priors” ECU mode will turn on, which was set at the factory. This bookmaker also has the ability to update the software.
Multitronics C-900. Universal on-board computer. Can be installed in different places. It has enormous capabilities both in diagnostics and adjustments. Suitable for a wide range of cars. It has a 480 x 800 pixel LCD display and the ability to change settings directly from your home PC.
Methods for diagnosing the electronic unit
Since the car is domestic, various breakdowns and malfunctions are quite common. If the “check” lights up, then you cannot do without the use of special diagnostic devices. Even if there is a device, diagnostics will take time.
Most of all, owners praise the ELM-327 device. It is easy to use and will allow you to erase errors from the ECU memory, as well as flash the “brains” of the VAZ-2114. Most car owners immediately remove it if it is present. But this is the wrong approach. There is not a single error that just happens.
If you remove them, the car will not be completely functional. In addition, removing symptoms can lead to more dire consequences. But it also happens that the ECU does not respond to requests from diagnostic equipment at all and produces an error that cannot be found. In this case, inspect the housing for damage, then check the fuse and the unit for overheating. In case of serious mechanical damage and deformation, the electronic device must be replaced.
Benefits of tuning
The main advantage of this tuning is the ability to improve the performance characteristics of the car without interfering with the engine itself. There is no need to change the head, install different pistons or spider. It is enough to install a different firmware on the VAZ, then the car will become more responsive to the accelerator pedal. The next plus is the speed of installation. Upgrading the VAZ-2114 firmware will take no more than twenty minutes of time. In this case, you can always return the ECU to its factory settings.
Another advantage of the control unit firmware is the removal of engine errors. They can occur when the catalyst is removed or the oxygen sensor is faulty. Since many VAZ-2114 owners install a flame arrester instead of a catalyst, the “Check” is constantly lit on the instrument panel. With the new firmware, “Check” will not bother the owner. And with computer diagnostics there will be no errors in the exhaust system.
There are many programs for flashing VAZ firmware. One will allow you to achieve maximum fuel efficiency. The other will improve dynamic performance. The third will allow the 16-valve engine to run on 92 gasoline without detonation and overconsumption.
ECU memory structure
The “brains” of the VAZ-2114 are characterized by a three-stage memory system. Each cascade is distinguished by the presence of separate working modules. Let's look at them in detail:
- RAM cascade is a familiar word for those who understand the design and operating principle of a PC. The functions of RAM (random access memory) in this case are also nothing new. The above cascade is a block of ordinary RAM where current work sessions are processed.
- The PROM block (programmable read-only memory) is a long-term memory in the VAZ-2114 ECU. The system contains data about when the driver needs to undergo maintenance. Fuel maps, previous calibrations, and control algorithms are also stored here. Also, in this block of “brains” of the VAZ-2114, the main firmware is saved. The information contained in this cascade will never be erased. If we draw an analogy with a computer, it is a device for permanently storing data; it will never be removed from here. When re-flashing the “brains”, changes are made here.
- The next stage is EPROM (electrically reprogrammable memory). This is a separate module. Its main function is to monitor the operation of anti-theft systems. The section stores encodings, passwords, methods and features of synchronizing information between the EEPROM and the immobilizer in the car. If suddenly for some reason the data packets do not match, the car engine will not start.
Each module is a separate block. The connections between them are made in the same way as on the computer motherboard.
