21. System of onboard diagnostics - the principle of functioning and codes of malfunctions
Data on diagnostic units
Check of serviceability of functioning of components of systems of injection and decrease in toxicity of the fulfilled gases is made by means of the universal digital measuring instrument (multimeter) (see an illustration below). Use of the digital measuring instrument is preferable for several reasons. First, on analog devices it is rather difficult (sometimes, it is impossible), to define result of the indication to within the 100-th and thousand shares while at inspection of the contours including electronic components in the structure, such accuracy is of particular importance. The second, not less important, the fact that the internal contour of a digital multimeter, has rather high impedance is the reason (internal resistance of the device makes 10 megohms). As the voltmeter is connected to the checked chain in parallel, the accuracy of measurement of subjects is higher, than smaller current will pass through actually device. This factor is not essential at measurement of rather high values of tension (9÷12 of V), however becomes defining at diagnostics of the elements giving low-voltage signals, such as, for example, lambda probe where it is about measurement of shares of volt.
Parallel observation of parameters of signals, resistance and tension in all chains of management is possible by means of the splitter included consistently in the socket of the control unit of the engine. At the same time on the switched-off, working engine or during the movement of the car, measurement of parameters of signals on splitter plugs is performed from what the conclusion about possible defects is drawn.
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Use at diagnostics of the considered systems of a digital multimeter with a high impedance significantly increases the accuracy of the performed measurements |
The special diagnostic scanners or testers of BMW DIS, MoDIC (programmed from PC) can be used to diagnostics of electronic systems of the engine, automatic transmission, ABS, SRS. Besides, it is possible to use scanners and specialized diagnostic analyzers to this purpose, for example CS 1000, Bosch FSA 560, KTS 300 (HUMMER), Sun 2013, or the ordinary personal computer with the special adapter, a cable and the installed program OBD browser (for example, the Bosch ESI program [tronic] in Russian, the Car Scanner program.
The universal K-L-line adapter, serves for coordination of signals of RS-232 port and ISO-9141 interfaces (K-line) and ALDL. Various cables necessary for diagnostics of concrete make of the car can be connected to sockets of the adapter. The switches and elements of indication installed in the adapter allow to choose necessary operating modes and approximately to estimate work of output lines. So, the luminescence of a green light-emitting diode with L-line marking, demonstrates connection of the line L with the car case. The luminescence of a red light-emitting diode with marking of K-line indicates the high potential which is present at this moment at the line K. At the established connection with the car the blinking of indicators can be imperceptible for an eye because of the high speed of exchange. Connection to the computer is made directly to the 25-contact COM port or by means of "The RS-232 25 cable Comte. - 9 Comte." in 9-contact SOM port.
Some scanners, besides usual operations of diagnostics, allow to print out, at connection with the personal computer, the schematic diagrams of electric equipment which are stored in memory of the control unit (if are put), to program anticreeping system, to observe signals in car chains in real time.
The free version of a browser of OBD II for diagnostics of your car.
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Hand scanners MoDIC, KTS 300 (Bosch) or the personal computer can be used to diagnostics of electronic control by systems of the car. |
The adapter for coordination of lines K and L of diagnostics with PC COM port
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Reading of the codes of malfunctions which are written down in memory of system of self-diagnostics on some models can be made also on the indicator "check the engine" on the control panel. |
Connection of PC for diagnostics of the car
All cartridges for a tester can be used also in the scanner. At the same time functions will be limited only to reading and cleaning of memory.
- R000 tester with T051A cartridge (B or C) or the P000 scanner with T041 cartridge,
- universal N000 cable,
- N001 socket.
The scanner only reads out the malfunctions brought memory and clears memory of malfunctions. The tester in addition can make active and show the current data.
The cartridge of OBD II performs the following functions:
- Reading and removal of codes of malfunctions of OBD II. Reflection of results of tests of the sensor of oxygen.
- Continuous control of systems of ignition, injection and components.
- Reflection of the list of the current data and the recorded unstable refusals:
- Absolute pressure in the inlet pipeline;
- Oxygen sensor tension;
- Temperature of cooling liquid of the engine;
- Settlement loading of the engine;
- Car speed;
- Quality of fuel;
- Air consumption (on weight);
- Ignition advancing;
- Provision of a butterfly valve;
- Temperature of the soaked-up air.
General description of system of self-diagnostics of OBD
Several diagnostic devices making monitoring of separate parameters of systems of decrease in toxicity and fixing the revealed refusals in memory of the onboard processor in the form of individual codes of malfunctions are a part of the OBD system. The system makes also check of sensors and actuation mechanisms, controls vehicle service cycles, provides a possibility of storing even of the failures which are quickly arising in the course of work and cleaning of the block of memory.
Some of the models described in the present manual are equipped with system of onboard diagnostics. A basic element of system is the onboard processor more often called by the electronic module of management (ESM), or the module of management of functioning of the power unit (RSM). RSM is a brain of a control system of the engine. Basic data arrive on the module from various information sensors and other electronic components (switches, the relay, etc.).
On the basis of the analysis of the data arriving from information sensors, and according to the basic parameters put in the processor memory, RSM develops commands for operation of various operating relays and actuation mechanisms, carrying out thereby adjustment of working parameters of the engine and providing maximum efficiency of its return at the minimum fuel consumption.
Data read-out of the processor memory of OBD is made by means of the special scanner connected to the 20-contact diagnostic socket located at the left in a motive compartment.
The black, 20-contact diagnostic socket X 1532 is located in the left back part of a motive compartment, to the right of a dome of a depreciation rack (shooter). The M30 engine is shown
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D100 — the Diagnostic socket X20 - the 20-contact SW socket X85 - the 3-contact SW socket X122 - the 2-contact SW socket X1532 - the 20-contact SW socket X910 - Connector |
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In principle, reading of the codes of malfunctions which are written down in memory of system of self-diagnostics can be made by means of a lamp "Check the engine" (address the Section Reading of Codes of Malfunctions). |
Purpose of conclusions of the 20-contact diagnostic socket
Information sensors
Oxygen sensors (lambda probes) - the Sensor develops a signal which amplitude depends on a difference of content of oxygen (O2) in the fulfilled gases of the engine and external air before and after the catalytic converter.
Sensor of provision of a bent shaft (ICR) - The sensor informs RSM on the provision of a bent shaft and turns of the engine. This information is used by the processor during the determining of the moments of injection of fuel and installation of a corner of an advancing of ignition.
Sensor of position of pistons (CYP) - On the basis of the analysis of the signals of RSM arriving from the sensor calculates position of the piston of the first cylinder and uses this information when determining the moments and the sequence of injection of fuel in engine combustion chambers.
BMT (TDC) sensor - The signals developed by the sensor are used by RSM when determining installations of a corner of an advancing of ignition at engine launch.
Sensor of temperature of cooling liquid of the engine (EST) - On the basis of information of ECM/PCM arriving from the sensor carries out necessary corrections of composition of air-fuel mix and a corner of an advancing of ignition, and also controls work of the EGR system.
The sensor of temperature of the soaked-up air (IAT) - RSM uses information arriving from the IAT sensor at corrections of a stream of fuel, installations of a corner of an advancing of ignition and management of functioning of the EGR system.
Sensor of provision of a butterfly valve (TPS) - The sensor is located on the case of a throttle and connected to an axis of a butterfly valve. Determines the angle of opening of a butterfly valve (is operated by the driver from the accelerator pedal) by amplitude of the given TPS of a signal of RSM and as appropriate corrects supply of fuel to inlet ports of combustion chambers. The failure of the sensor, or weakening of its fastening leads to interruptions of injection and violations of stability of turns of idling.
The sensor of absolute pressure in the pipeline (MAR) - The sensor controls the depression depth variations in the inlet pipeline connected with changes of turns of a bent shaft and load of the engine and will transform the obtained information to an amplitude signal. RSM uses information delivered by the MAR and IAT sensors at thin corrections of supply of fuel.
The sensor of atmospheric pressure - the Sensor develops the amplitude signal proportional to changes of atmospheric pressure which is used by RSM when determining duration of the moments of injection of fuel. The sensor is built in the RSM module and is not subject to service in an individual order.
The detonation sensor - the Sensor reacts to change of level of the vibrations connected with detonations in the engine. On the basis of information of RSM arriving from the sensor carries out the corresponding correction of a corner of an advancing of ignition.
Sensor of speed of the movement of the car (VSS) - As appears from its name, the sensor informs the processor on the current speed of the movement of the car.
Sensor of size of opening of the EGR valve - The sensor notifies RSM on EGR valve plunger shift size. The obtained information is used then the processor at management of functioning of system of recirculation of the fulfilled gases.
Pressure sensor in the fuel tank - the Sensor is a component of system of catching of fuel evaporations (EVAP) and serves for tracking of pressure of vapors of gasoline in a tank. On the basis of information of RSM arriving from the sensor issues commands for operation of electromagnetic valves of a purge of system.
Sensor switch of pressure of system of hydrostrengthening of a wheel (PSP) - On the basis of information of RSM arriving from the PSP sensor switch provides increase in turns of idling due to operation of the IAC sensor for the purpose of compensation of the increasing loads of the engine connected with functioning of the steering hydraulic booster at commission of maneuvers.
Transmission sensors - In addition to the data arriving from VSS, RSM obtains also information from the sensors placed in the transmission, or connected to it. Are among such sensors: (a) RPM meter of a secondary (radical) shaft and (b) RPM meter of an intermediate shaft.
The sensor switch of management of inclusion of a clutch coupling of the conditioner of air - When giving power supply from the battery to the electromagnetic valve of the K/V compressor the corresponding information signal arrives on RSM which regards it as the evidence of increase of load of the engine and as appropriate corrects turns of its idling.
Actuation mechanisms
Main PGM-FI relay (relay of the fuel pump) - RSM makes activation of the relay of the fuel pump when turning the ignition key in situation START or RUN. At inclusion of ignition activation of the relay provides rise in pressure in a power supply system. More detailed information on the main relay is provided in the Head the Power supply system.
Fuel injectors - RSM provides individual inclusion of each of injectors according to an established order of ignition. Besides, the module controls duration of opening of injectors determined by the width of the operating impulse measured in milliseconds and defining amount of the fuel injected into the cylinder. More detailed information on the principle of functioning of system of injection, replacement and service of injectors is provided in the Head the Power supply system.
Module of management of ignition (ICM) - The module operates functioning of the coil of ignition, defining the required basic advancing on the basis of the developed RSM of teams. On all models of cars considered in the present manual it is used built in ICM ignition distributor, for more details see the Head Sistem of ignition.
Valve of stabilization of turns of idling (IAC) - The IAC Valve carries out a dosage of amount of the air bypassed bypassing a butterfly valve when the last is closed or holds idling position. RSM operates opening of the valve and formation of the resulting air stream.
The electromagnetic valve of a purge of a coal adsorber - the Valve is a component of system of catching of fuel evaporations (EVAP) and, working at the command of RSM, makes production of the fuel vapors which accumulated in an adsorber in the inlet pipeline for the purpose of burning them in the course of normal functioning of the engine.
The electromagnet of management of a purge of a coal adsorber - the Electromagnet is used by RSM when checking by the OBD-II system of serviceability of functioning of the EVAP system.
Reading of codes of malfunctions
At detection of the malfunction repeating in a row on two trips, RSM issues the command for inclusion of the control lamp which is built in in an instrument guard "Check the engine", called also by the indicator of refusals. The lamp will continue to burn until memory of system of self-diagnostics is not cleared of the codes of the revealed malfunctions brought in it. Reading of codes of malfunctions in the OBD system can be made in various ways. The main way is reading by means of the devices described above connected to the OBD system DLC socket. Other ways are possible not on all models. The blinking code can be считан on a lamp "Check the engine".
Without starting the engine, include ignition - a control lamp "Check the engine" has to light up, otherwise it should be replaced.
On early models, with malfunctions, the control lamp several times will flash on 1 sec. and will go out before lights up constantly. The number of flashes of a lamp (from 1 to 4) corresponds to a malfunction code (the list lower).
Method of reading of the blinking codes on a lamp "Check the engine" (it is possible on some models)
The chart of delivery of the blinking code a control lamp
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Include ignition. Completely squeeze out five times within five seconds and release an accelerator pedal. If in the processor memory codes of the malfunctions taking place are brought, they will begin to be highlighted consistently by a control lamp "Check the engine" on the control panel of the car. Consider the blinking code.
The lamp lights up on 5 sec., in 0.5 sec. lights up on 2.5 sec. again, and through an interval 2.5 sec. are given a code. Value of each category of a code corresponds to the number of flashes with an interval 0.5 sec. At first the senior categories of a code, the last – units are issued. Intervals between categories of a code - 2.5 sec. After delivery of a code a lamp it is necessary to burn. Repeat the procedure to consider the subsequent codes. If the first given code 1444, 2444 or 4444 - malfunctions are not recorded.
The codes 1000 or 2000 given by one or two flashes and a long pause, and then continuous burning of a lamp indicate the end of delivery of a code.
Start of the engine automatically interrupts access to system of diagnostics.
Cleaning of memory of OBD
When entering a code of malfunction in memory of RSM on an instrument guard of the car the control lamp "Lights up check the engine". The code remains written down in memory of the module.
For cleaning of memory of ESM connect the scanner to system and choose the CLEARING COEDS function (Removal of codes) in its menu. Further follow the instructions highlighted on the device or at once for 30 seconds take from the nest in the assembly block EFI safety lock.
Alternatively cleaning of memory of system can be made by removal of a fusible insert (the main safety lock of the system of onboard power supply) installed close the positive plug of the battery (it is possible also just to disconnect a positive wire from the battery).
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It must be kept in mind that when cleaning memory of OBD by a detachment of a negative wire from the battery, adjusting parameters of the engine are erased and stability of its turns for a short time after primary start is broken. |
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If the stereosystem established on the car is equipped with a security code before disconnecting the battery, make sure that you have the correct combination for input of the audio system in action! |
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Shutdown of the battery also leads to removal of settings of the receiver for favourite radio stations. |
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In order to avoid damage of ESM its shutdown and connection should be made only at the switched-off ignition! |
Track that memory of system was cleared before installation on the engine of new components of systems of decrease in toxicity of the fulfilled gases. If before start of system after replacement of the failed information sensor not to make cleaning of memory of refusals, RSM will bring in it a new code of malfunction. Cleaning of memory allows the processor to make change-over on new parameters. At the same time, the first 50 ÷ 20 minutes after primary start of the engine, some violation of stability of its turns can take place.
Codes of malfunctions
Motronic 1.1, 1.2, 1.3 – flashes of a lamp of refusals
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1 |
Sensor of an air stream |
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2 |
Lambda probe |
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3 |
Sensor of temperature of cooling liquid |
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4 |
Sensor switch of a closed position of a butterfly valve |
Motronic 1.1, 1.2, 1.3
| 1 | Block of electronic control |
| 3 | Chain of the relay of the fuel pump |
| 5 | Chain of the valve of management of idling turns |
| 7 | Measuring instrument of an air stream |
| 10 | Mix quality management, lambda sensor |
| 15 | Control lamp of refusals |
| 16 | Injectors of cylinders 1, 3, 5 |
| 17 | Injectors of cylinders 2, 4, 6 |
| 23 | Heating lambda probe or its relay |
| 28 | Chain lambda probe |
| 29 | Engine RPM meter |
| 33 | The kick valve - down |
| 37 | Power supply of the block of electronic control is higher than 16B |
| 43 | Adjustment potentiometer WITH |
| 44 | Air temperature sensor |
| 45 | Sensor of temperature of cooling liquid |
| 51 | Ignition advancing shift |
| 52 | Sensor switch of extreme provision of a butterfly valve |
| 53 | Sensor switch of extreme provision of a butterfly valve |
| 54 | Blocking of the converter of rotation of AT |
| 100 | Amplifier of ignition |
| 101 | Engine failure |
The codes of diagnostics of the DME 1.7 systems (518i) which are read out by means of a tester
| 1 | The relay of the fuel pump or its chain to the control unit (a conclusion 1) |
| 3 | Break, short circuit of a chain of injectors 1 and 3 |
| 8 | Short circuit of a chain of a control lamp "Check the engine" |
| 12 | Break, short circuit of a chain of a potentiometer of a butterfly valve |
| 16 | Sensor of provision of a cam-shaft. Disappearance of a signal on turns of 2500 in min. |
| 29 | Short circuit in a chain of management х.х., (conclusion 29) |
| 32 | Break, short circuit of a chain of injectors 2 and 4 |
| 36 | Break, short circuit of a chain of the valve of ventilation of the fuel tank |
| 37 | Break, short circuit of a chain of heating lambda probe, (conclusion 37) |
| 41 | Break, short circuit of a chain of the measuring instrument of an air stream |
| 54 | Supply voltage of the control unit is lower 9B or higher than 16B |
| 70 | Break, short circuit of a chain lambda probe |
| 73 | Incorrect signal of the sensor of speed of the car |
| 77 | Break, short circuit of a chain of the sensor of temperature of the soaked-up air |
| 78 | Break, short circuit of a chain of the sensor of temperature of cooling liquid |
| 85 | Conditioner compressor. Break of a conclusion 86 and short circuit on a conclusion 85 |
| 100 | Touch of an output signal of the terminal cascade of ignition is lost |
| 200 | Internal defect of memory of the control unit |
| 201 | The reenriched or regrown poor mix for the last 8 sec. |
The codes of diagnostics of the DME 3.1 systems (520i, 525) which are read out by means of a tester
| 0 | Uncertain malfunction in memory of the block |
| 1 | The relay of the fuel pump or its chain to the control unit (a conclusion 1) |
| 2 | Break, short circuit of the activator х.х. it (is closed) or its chain to the control unit (a conclusion 2) |
| 3 | Break, short circuit of a chain of an injector 1 to the control unit (a conclusion 3) |
| 4 | Break, short circuit of a chain of an injector 3 to the control unit (a conclusion 4) |
| 5 | Break, short circuit of a chain of an injector 2 to the control unit (a conclusion 5) |
| 6 | Break or short circuit of chains of injectors |
| 8 | Break or short circuit of a chain of a control lamp "Check the engine" |
| 12 | Break or short circuit of a chain of a potentiometer of a butterfly valve |
| 16 | Signal of the sensor of provision of a cam-shaft |
| 18 | Short circuit on the case or plus of a conclusion of the 18th control unit |
| 19 | Short circuit on the case or plus of a conclusion of the 19th control unit |
| 23 | Break of an exit of the coil of ignition of the cylinder 2 (conclusion 23) |
| 24 | Break of an exit of the coil of ignition of the cylinder 3 (conclusion 24) |
| 25 | Break of an exit of the coil of ignition of the cylinder 1 (conclusion 25) |
| 26 | Supply voltage of the control unit is lower than accumulator tension (at the switched-off engine) |
| 29 | Short circuit in an activator chain х.х. it (is open), (a conclusion 29) |
| 31 | Break, short circuit of a chain of an injector 5 to the control unit (a conclusion 31) |
| 32 | Break, short circuit of a chain of an injector 6 to the control unit (a conclusion 32) |
| 33 | Break, short circuit of a chain of an injector 4 to the control unit (a conclusion 33) |
| 34 | Break, short circuit of chains of components to the control unit |
| 36 | Break, short circuit of a chain of the valve of ventilation of the fuel tank |
| 37 | Break, short circuit of a chain of heating lambda probe |
| 41 | Break, short circuit of a chain of the measuring instrument of mass of air |
| 46 | Short circuit on the case or plus of a conclusion of the 46th control unit |
| 48 | The compressor of the conditioner of air is not switched-off at a speed below 8 km/h |
| 50 | Break of an exit of the coil of ignition of the cylinder 4 (conclusion 50) |
| 51 | Break of an exit of the coil of ignition of the cylinder 6 (conclusion 51) |
| 52 | Break of an exit of the coil of ignition of the cylinder 5 (conclusion 52) |
| 54 | Supply voltage of the control unit is lower 10B or higher than 14B |
| 55 | Break in ignition chains |
| 64 | Ignition advancing chain - short circuit on the conclusion case 64 control units |
| 67 | There is no signal of the sensor of turns/position of the crankshaft, Ignition and injection are switched off |
| 70 | Break, short circuit of a chain lambda probe |
| 73 | Car speed sensor |
| 77 | Break, short circuit of a chain of the sensor of temperature of the soaked-up air |
| 78 | Break, short circuit of a chain of the sensor of temperature of cooling liquid |
| 81 | Operation of the anticreeping alarm system after start of the engine |
| 85 | Operation of the compressor of the conditioner after start of the engine while the signal of the switch did not arrive |
| 100 | Short circuit on the case or plus of a conclusion of the 100th control unit |
| 200 | Internal defect of the RAM or PZU/PPZU of the control unit |
| 201 | Internal defect of memory of malfunctions |
| 202 | Management of systems of toxicity of release came out from under control |
Codes of diagnostics of the Motronic M3.3 systems (540i)
| 1211 | Control unit of the engine |
| 1212 | Lambda probe 2 |
| 1213 | Exit out of limits of management of a signal a lambda probe 2 |
| 1215 | Measuring instrument of mass of air / air stream |
| 1216 | Potentiometer of a butterfly valve |
| 1221 | Lambda probe 1 |
| 1222 | Exit out of limits of management of a signal a lambda probe 1 |
| 1223 | Sensor of temperature of cooling liquid |
| 1224 | The sensor of temperature of the soaked-up air |
| 1225 | Sensor of a detonation 1 |
| 1226 | Sensor of a detonation 2 |
| 1227 | Sensor of a detonation 3 |
| 1228 | Sensor of a detonation 4 |
| 1231 | Supply voltage |
| 1232 | Sensor switch of a closed position of a butterfly valve |
| 1233 | Sensor switch of completely open provision of a butterfly valve |
| 1237 | Air conditioner pump relay |
| 1243 | Lack of a signal of the RPM meter of the engine |
| 1244 | Sensor of provision of a cam-shaft |
| 1247 | Connection with the case of the control unit of the engine |
| 1251 | Cylinder 1 injector |
| 1252 | Cylinder 5 injector |
| 1253 | Cylinder 4 injector |
| 1254 | Cylinder 8 injector |
| 1255 | Cylinder 6 injector |
| 1256 | Cylinder 3 injector |
| 1257 | Cylinder 7 injector |
| 1258 | Cylinder 2 injector |
| 1261 | Relay of the fuel pump |
| 1262 | Valve of management of turns х.х. |
| 1263 | Adsorber purge valve |
| 1264 | Heating relay lambda probe |
| 1265 | Short circuit in a chain of a control lamp of refusals |
| 1267 | Air pump |
| 1271 | Cylinder 1 ignition coil |
| 1272 | Cylinder 5 ignition coil |
| 1273 | Cylinder 4 ignition coil |
| 1274 | Cylinder 8 ignition coil |
| 1275 | Cylinder 6 ignition coil |
| 1276 | Cylinder 3 ignition coil |
| 1277 | Cylinder 7 ignition coil |
| 1278 | Cylinder 2 ignition coil |
| 1281 | Low voltage of power supply of the control unit of the engine |
| 1282 | Malfunction in memory of the control unit of the engine |
| 1283 | Connection of an injector with the case |
| 1286 | Chain of management on a detonation |
| 1444 | Lack of the registered malfunctions |
The codes of diagnostics of automatic transmission kept in memory of the control unit
| 1 | Transmission relay |
| 2 | Checksum of memory of PPZU (EPROM) |
| 3 | Vyklyuchatkl Kick-down |
| 4 | Switch of programs |
| 5 | Accelerator pedal signal, signal of a butterfly valve |
| 6 | Electromagnetic valve э / magnetic valve 1 |
| 7 | Electromagnetic valve э / magnetic valve 2 |
| 8 | Э / magnetic valve 1, э / magnetic valve 2 |
| 9 | The electromagnet of switching of P/N is blocked |
| 10 | Э / the magnetic valve 1, an electromagnet of switching of P/is blocked |
| 11 | Э / the magnetic valve 2, an electromagnet of switching of P/N is blocked |
| 12 | Э / the magnetic valve 1, э / the magnetic valve 2, an electromagnet of switching of P/is blocked |
| 13 | Э / magnetic valve of coupling of the converter of rotation |
| 14 | Э / magnetic valve 1, э / magnetic valve of coupling of the converter of rotation |
| 15 | Э / magnetic valve 2, э / magnetic valve of coupling of the converter of rotation |
| 16 | Э / magnetic valve 1, э / magnetic valve 2, э / magnetic valve of coupling of the converter of rotation |
| 17 | The electromagnet of switching of P/N is blocked, э / the magnetic valve of coupling of the converter of rotation |
| 18 | Э / the magnetic valve 1, an electromagnet of switching of P/N is blocked, э / the magnetic valve of coupling of the converter of rotation |
| 19 | Э / the magnetic valve 2, an electromagnet of switching of P/N is blocked, э / the magnetic valve of coupling of the converter of rotation |
| 20 | Supply voltage э / magnetic valve and regulator of pressure (DR) |
| 21 | Basic signal of turns of the engine (1 on a crankshaft turn) |
| 22 | Pressure regulator |
| 23 | Intervention in adjustment of an advancing of ignition |
| 24 | The RPM meter at the exit, decrease in transfer is blocked |
| 25 | Protection of overrev |
| 26 | Signal of injection (ti) |
| 27 | Sensor of output turns (DZF) or converter of rotation |
| 28 | The indicator of malfunctions (except GS 1.2) |
| 29 | Program checksum |
| 30 | Battery supply voltage |
| 31 | Position of the lever of the selector |
The codes of diagnostics of automatic transmission which are not kept in the memories of the control unit defined when monitoring
| 200 | There is no switching of kick - down |
| 201 | Switching only kick - down |
| 202 | There is no program S |
| 203 | There is no program M |
| 204 | There is no switching of the program |
| 205 | There is no intervention of the engine |
| 206 | Incorrect display of malfunctions |
| 207 | Switchings only at full loading (without EML) |
| 300 | Malfunction of the line of diagnostics |
| 301 | Control unit supply voltage deviation |
| 302 | Position of the lever of the selector |
| 303 | Position of the lever of the selector is not defined |
Codes of diagnostics of the automatic conditioner of air of salon
| 01 | Right regulator of management of temperature |
| 04 | Right sensor of heating |
| 07 | Evaporator sensor |
| 10 | Sensor of temperature of external air |
| 13 | Intra saloon sensor |
| 16 | Intra saloon sensor of the fan |
| 22 | The relay of the additional fan (The KV coupling relay - DME) |
| 25 | Left regulator of management of temperature |
| 28 | Left sensor of heating |
| 31 | Management of an air stream |
| 32 | The air stream selector lever to legs |
| 34 | Management of air mixing |
| 38 | Relay of the additional water pump |
| 40 | Left water valve |
| 44 | Relay of KV/step of 1 additional fan |
| 46 | Right water valve |
| 47 | Relay of the DME/EML KV coupling |
| 48 | Relay of heating of back glass |
| 52 | Motor of the gate of fresh air |
| 55 | The motor of the gate of the circulating air |
| 58 | Motor of the left gate of ventilation |
| 61 | The motor of the right gate of the mixed air |
| 64 | The motor of the left gate of the mixed air |
| 67 | Motor of the gate of a back part of salon |
| 70 | The motor of the left gate of a stream of air to legs |
| 73 | The motor of the right gate of a stream of air to legs |
| 76 | Motor of the gate of defrosting of glasses |
| 79 | Motor of the right gate of ventilation |