Audi A3

Since 1997 of release

Repair and car operation



Audi A3
- The maintenance instruction
   Cars of mark Audi A3/S3 - the summary
   Identification numbers of the car
   Acquisition of spare parts
   Technology of service, the tool and the workplace equipment
   Поддомкрачивание and towage
   Start of the engine from the auxiliary power supply
   Checks of readiness of the car to operation
   Automobile химикалии
   Diagnostics of malfunctions of knots and car systems
   Controls and receptions of safe operation
   Arrangement of controls and devices
   Keys, locks of a body with uniform management and the security alarm system
   Electric window raiser and rear-view mirrors
   Safety systems. Transportation of children
   Seats
   Luggage carrier
   Adjustable steering column
   Manual brake
   Automatic transmission
   The device of the acoustic help at a parking
   The lock of ignition and engine start
   Control and measuring devices. Precautionary and diagnostic systems
   The travelling computer
   Switches and switches
   Темпостат
   Screen wipers and washer
   Ventilation, heater and the conditioner of air of salon
   The podemno-sdvizhnaja panel крыши*
   Salon and luggage carrier illumination
   The salon equipment
   Luggage carrier on a roof
   Обкатка
   Features of driving of the car and auxiliary systems (ABS, EDS, ASR, ESP)
   Trailer operation
   Fuelling and emergency unlocking of a cover refuelling лючка
   Cowl
   Readjustment of headlights
   The first-aid set
   Sign on an emergency stop
   The complete set of the tool and jack
   Spare wheel
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release of the fulfilled gases
+ Engine electric equipment
+ Manual box of a gear change
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electroschemes



Diagnostics of malfunctions of knots and car systems

THE GENERAL DATA

The description of diagnostics of electronic control systems and diagnostic codes are resulted in section of System of an electric equipment of the engine.

In the given Section the most simple scheme of finding-out of the reasons of malfunctions and the refusals occurring in knots and systems of a vehicle is offered. Refusals and their possible reasons are broken into groups on the basis of the relation to certain components or car systems, as for example the engine, cooling system, etc., besides, in the text references to Sections and Subsections concerning the given problems are given.

Remember that successful end of search of causes of defect at all is not the black magic accessible to only skilled professional mechanics, and is defined by a combination of certain knowledge and the patient, regular approach to problem research. To move always follows from simple to difficult, to lead up each check to the logic end and to try not to pass the obvious facts – everyone can forget to fill fuel in a fuel tank or to leave for the night included lighting devices.

And at last, always it is necessary to try to make an accurate picture of development of malfunction and to undertake corresponding steps on relapse prevention. If refusal of an electric equipment was the result of infringement of quality of contact, check up at the same time a condition of all other contacts and electric sockets of system. If the same safety lock some times continues to fuse successively, there is no sense in its further replacement – it is necessary to try to find out a cause of a failure. Remember that failure of a minor component can be a sign of infringement of functioning of more important knot or the whole system.

The engine


If the engine is not started, it is necessary to analyse a situation. That the engine in general could be started, two basic conditions should be satisfied. In cylinders the mix should arrive fuel-air, and on a spark plug the spark should be developed. Therefore, first, it is necessary to check up, whether fuel moves. As thus it is necessary to operate, it is described in section of the Power supply system and release of the fulfilled gases.

To define, whether the spark is developed, it is necessary to turn out all candles, to insert into tips and separately to put to weight. The remark: to exclude damage каталитического the converter, it is necessary to exclude thus gasoline injection. For this purpose расстыкуйте штекерное connection of injectors. If the spark is not present, define malfunction according to section of System of an electric equipment of the engine.

ATTENTION

Observe security measures at work with electronic system of ignition (section of System of an electric equipment of the engine).


Thus a tip or a cable of ignition do not hold hands, and use well isolated nippers. Ask the assistant to start the engine. If the spark does not slip, define malfunction being guided by section of System of an electric equipment of the engine.

The engine is not turned at attempts of its start

1. Corrosion of plugs of the battery or ослабло fastening on them of tips of wires takes place. Check up a condition of plugs and tips. Tighten клеммные clips, if necessary remove corrosion traces.
2. The battery is discharged or faulty. If tips of wires are found pure and reliably fixed on battery plugs, turn the ignition key in position ON, then include head headlights and-or windscreen cleaners. If the given electric equipment does not function, the battery is discharged.
3. Transmission it is inexact it is established in position “Р” (АТ) or on neutral transfer (РКПП), or coupling is not completely squeezed out.
4. Conducting in a chain of system of start or ослабло fastening of wires on plugs is torn off. Believe, whether is at start of the engine pressure not less than 10 In on the plug 50 traction relays, necessary for retraction. Check up a condition of wires, plugs and electric sockets of the battery, the traction relay of a starter and the ignition lock.
5. The starter gear wheel is jammed in a gear wreath of a flywheel. On the models equipped РКПП, establish it on transfer and, потолкав manually the car, turn that its engine. At the first possibility remove a starter and check up a condition of a gear wheel and a gear wreath of a flywheel.
6. The traction relay of a starter (section of System of an electric equipment of the engine) is faulty.
7. The starter (section of System of an electric equipment of the engine) is faulty.
8. The ignition lock is faulty.

The engine is turned, but not started

1. Start is incorrectly made

Order of start of the petrol engine:

Cock a lay brake, squeeze out a coupling pedal. On models with АТ press and keep a brake pedal. On АТ establish the selector in position “Р” or “N”. Do not give some gas. Turn the ignition key and keep, while the engine will not be started. If the engine during 20 with is not started or at once will stop, repeat start process at half pressed pedal of gas. As soon as the engine will be started, release the ignition key.

On a frost more low-15S and at height more than 1000 m above sea level: Start spend not less than 10 with at half pressed pedal.
Necessarily at once begin movement. If there is a strong frost allow to the engine to work during
30 with.

If the engine is not started, through 10 with, interrupt start and repeat it through a floor of minute.

ATTENTION

Some unsuccessful attempts of start can damage каталитический the converter, since successively. Not burnt down fuel взрывообразно burns down at heating in каталитическом the converter.


Only on the hot engine after start add a few gas.
2. It is faulty иммобилизатор the engine.
3. The safety lock is faulty:

– The electric fuel pump;
– Electronic system of injection.

Concerning check of safety locks address to subsection Safety locks.
4. An empty fuel tank or poor-quality fuel is filled in.
5. The air filter is strongly polluted. Vacuum leaks in elements of giving of air, malfunction in a control system of injection of fuel and ignition take place.
6. The battery (the engine is turned too slowly) is discharged. Check up electric equipment functioning.
7. Корродированы клеммные connections of the battery or ослабло their fastening (address to the previous Section).
8. The fuel pump is faulty.
9. Components of system of ignition (Section of System of an electric equipment of the engine) are damaged or excessively humidified.
10. Spark plugs are worn out or faulty or the candle backlash (Section of System of an electric equipment of the engine) is incorrectly exposed.
11. Conducting of an electric contour of system of start or ослабло fastening of wires on plugs is torn off or disconnected.
12. Conducting of a contour of the coil of ignition or ослабло fastening of wires on coil plugs (Section of System of an electric equipment of the engine) is torn off or disconnected.
13. Too low pressure of a compression. Replace a sealing lining of a head of cylinders. If necessary repair the engine.
The diesel engine:
14. Start is incorrectly made
Order of start of the turbodiesel engine:

On the cold engine and at external temperature more low +8С tighten a lay brake, squeeze out a coupling pedal. On АТ establish the selector in position “Р” or “N” – РКПП. Turn the ignition key in position II and wait, the control lamp of preheat will not go out yet. At once after the control lamp will go out, start the engine, without giving some gas. If there are irregular flashes do not switch off a starter while the engine will not earn in regular intervals (no more than 30. If the engine is not started, through a floor of minute again repeat start as it is described above. In the course of preheat of the engine, it is not necessary to include current consumers (light, heating of back glass).

On the cold engine and at external temperature above +8С, and also at the warm engine preheat is not required. The engine can be started at once. It is not necessary to give gas.
15. It is faulty иммобилизатор the engine.
16. Ныеисправен a safety lock:

– The electric fuel pump;
– Preheat systems.
17. The engine is not heated-up: check up serviceability of functioning of the device of preheat.
18. On electromagnetic запорном the valve there is no pressure. Connect to the switch the voltmeter or a sampler on a light-emitting diode. Include ignition. The light-emitting diode should light up. Otherwise it is necessary to find breakage of electroconducting and to eliminate it.
19. It is faulty electromagnetic запорный the valve. Check up reliability of fastening of the electromagnetic switch, check up contacts. Switch on and off ignition. In the switch click should be distributed.
20. Damage to a line of giving of fuel or air to lines takes place:

a) Pipelines or hoses are mechanically damaged or littered. Clear fuel pipelines and remove air from lines and the filter.
b) the fuel filter Is littered. Replace filtering element.
c) it is necessary to check up the filter and pipelines on ice or wax presence in the Winter. Put the car in heated garage, add in gasoline system.
d) ventilation of a tank or the mesh filter топливозаборника Is littered.

Clean.
21. Adjustment of the beginning of giving of fuel is brought down. Check up, make updating.
22. Atomizers are faulty. Check up. Turn on consistently накидные nuts – at отворачивании nuts of the faulty cylinder engine turns will not fall.
23. The fuel pump of a high pressure (ТНВД) is faulty. Establish for check new, or obviously serviceable ТНВД.
24. Too low pressure of a compression. Replace a sealing lining of a head of cylinders. If necessary repair the engine.

The starter functions without проворачивания the engine

1. The starter gear wheel is jammed. Remove a starter (the Head of System of an electric equipment of the engine) and check up its condition.
2. A teeth of a gear wheel of a starter or a flywheel wreath are worn out or damaged.

Start of the cold engine is complicated

1. The battery is discharged or insufficiently charged.
2. Malfunction of components of the power supply system or an electric equipment takes place.
3. Paraffin in the filter of thin clearing of the diesel engine. Replace a filter element. Fill winter fuel, or dilute with gasoline
4. Candles накаливания the diesel engine are faulty.

Start of the hot engine is complicated

1. The air filter is blocked
2. Malfunction of components of the power supply system or an electric equipment takes place
3. Fuel does not reach injectors of system of injection
4. The corner of an advancing of giving of fuel of the diesel engine has got off.
5. A low compression in cylinders, it is faulty or disadjusted ТНВД the diesel engine.

Starter gearing occurs is too noisy or with difficulty

1. A teeth of a gear wheel of a starter or a flywheel wreath are worn out or damaged.
2. Bolts of fastening of a starter or ослабло effort of their tightening are lost.

The engine is started, but immediately глохнет

1. It is faulty иммобилизатор the engine.
2. Electroconducting or ослабло fastening of wires on coil or generator plugs is faulty.
3. Malfunction of components of the power supply system or an electric equipment takes place
4. Base installations of the block of electronic control (ЕСМ) are broken.
5. Damage to system of release/kataliticheskom the converter.
6. Depression losses through прокладочные surfaces of the inlet pipeline or the block of injection of fuel take place. Make sure of reliability of an inhaling of fixing bolts/nuts, check up the fact and quality of fastening on the unions on the inlet pipeline of all vacuum hoses. Check up a condition of hoses and correctness of their connection (to the unions).

Stability of work of the engine on single turns is broken

1. Depression losses take place. Make sure of reliability of an inhaling of fixing bolts/nuts, check up the fact and quality of fastening on the unions on the inlet pipeline of all vacuum hoses. Hear to the working engine by means of a stethoscope or a piece of a fuel hose. Presence of a hissing sound will allow to reveal a source of "leak" of vacuum. Not less effectively it is possible to take advantage for check by a solution of soap water.
2. Malfunction of components of the power supply system or an electric equipment takes place
3. The valve of system of operated ventilation картера is blocked
4. The air filter is blocked
5. The fuel pump does not provide giving of enough of fuel to injectors of system of injection
6. Leaks through a lining of a head of cylinders take place. Make measurement компрессионного pressure in engine cylinders.
7. Working ledges of cams of a camshaft are worn out  
The diesel engine:
8. Quality of connections of fuel hoses on ТНВД and the fuel filter is broken. Replace fuel hoses, fix their collars, tighten screws of angular connections.
9. It is mechanically damaged or ослабло fastening ТНВД. Check up fastening.
10. Are mixed by junctions of the returnable pipeline and the pipeline of giving of fuel. Connections put on the places. The screw of connection of the returnable pipeline has marks “OUT”.
11. Damage to a line of giving of fuel takes place:

a) Pipelines or hoses are mechanically damaged or littered. Clear fuel pipelines.
b) the fuel filter Is littered. Replace filtering element.
c) it is necessary to check up the filter and pipelines on ice or wax presence in the Winter. Put the car in heated garage, add in gasoline system.
d) ventilation of a tank or the mesh filter топливозаборника Is littered.

Clean.
12. Adjustment of the beginning of giving of fuel is brought down. Check up, make updating.
13. Atomizers are faulty. Check up. Turn on consistently накидные nuts – at отворачивании nuts of the faulty cylinder engine turns will not fall.
14. The fuel pump of a high pressure (ТНВД) is faulty. Establish for check new, or obviously serviceable ТНВД.

Ignition admissions take place at engine work on single turns

1. Spark plugs are worn out or polluted or the candle backlash (Section of System of an electric equipment of the engine) is incorrectly exposed.
2. Malfunction of components of the power supply system or an electric equipment takes place
3. Wires of spark plugs (Section of System of an electric equipment of the engine) are faulty.
4. Bad quality fuel is filled. The fuel filter is hammered.
5. Depression losses in the inlet pipeline or through шланговые connections take place
6. There is not enough, or it is non-uniformly distributed компрессионное pressure in cylinders. Make compression measurement
7. Infringements in work of a control system as the engine take place.

Ignition admissions take place at car movement on transfer

1. The fuel filter is blocked or power supply system pollution takes place
2. Spark plugs are faulty or polluted or the candle backlash (Section of System of an electric equipment of the engine) is incorrectly exposed.
3. Malfunction of components of the power supply system or an electric equipment takes place
4. Defect of candle wires (Section of System of an electric equipment of the engine) takes place.
5. Components of systems of decrease in toxicity of the fulfilled gases are faulty.
6. Insufficiently or it is non-uniformly distributed between cylinders компрессионное pressure. Remove spark plugs and make measurement компрессионного pressure
7. The ignition system (Section of System of an electric equipment of the engine) is faulty.
8. Depression losses on the throttle case, the inlet pipeline or through vacuum hoses take place

The engine глохнет

1. Adjustment of turns of idling is broken.
2. The fuel filter is blocked and-or the moisture or a dirt has got to the power supply system
3. Refusal of components of the power supply system or gauges takes place
4. Components of systems of decrease in toxicity of the fulfilled gases are faulty.
5. Spark plugs are faulty or polluted or the candle backlash is incorrectly exposed. Also check up a condition of candle wires (Section of System of an electric equipment of the engine).
6. Depression losses on the case of a throttle or through vacuum hoses take place

The engine does not develop a total power

1. Malfunction of components of the power supply system or an electric equipment (Section of System of an electric equipment of the engine) takes place.
2. The air cleaner is littered. To clean or replace.
3. Spark plugs are faulty or the candle backlash is incorrectly exposed
4. The ignition coil (Section of System of an electric equipment of the engine) is faulty.
5. There does not correspond to requirements level of liquid АТ
6. Coupling revolves
7. The fuel filter is blocked and-or the dirt/moisture has got to the power supply system
8. Fuel not that grade is filled. Fill in in a tank fuel with demanded OCTANESым number.
9. The adjusting valve турбокомпрессора is damaged.
10. The activator of a cam-shaft of displacement of phases ГРМ is faulty.
11. Insufficient or non-uniform on cylinders компрессионное pressure. Make the compression measurement which analysis of results allows to reveal presence of leaks of valves and-or infringement of tightness of a lining of a head of cylinders
In addition for the diesel engine
12. The air cleaner is littered. Clean or replace.
13. Non-uniform giving of fuel ТНВД on cylinders. Adjust on the heated-up engine.
14. The moment of the beginning of giving of fuel ТНВД is incorrectly established. Establish.
15. The fuel filter or ТНВД (atomizer) is littered. Wash out the preliminary filter, replace an element of the filter of thin clearing, clean a spray or replace the pump (atomizer).
16. Adjustment of the maximum frequency of rotation of a cranked shaft is broken.

There are claps in system of an admission or shots in release system

1. Malfunction of components of the power supply system or an electric equipment (Section of System of an electric equipment of the engine) takes place.
2. Defect in a secondary contour of system of ignition (destruction of insulators of spark plugs or defects of candle wires) (Section of System of an electric equipment of the engine) takes place.
3. The system of injection of fuel or its components requires adjustment are worn excessively out
4. Depression losses on the throttle case, the inlet pipeline or through vacuum hoses take place
5. Valves are jammed
6. The order of connection of candle wires (Section of System of an electric equipment of the engine) is broken.

At movement with acceleration or uphill there are detonation sounds

1. Bad quality fuel is filled.
2. Malfunction of components of the power supply system or an electric equipment (Section of System of an electric equipment of the engine) takes place.
3. Spark plugs not that type are established. Check up candles and coils on presence of damages (Section of System of an electric equipment of the engine).
4. Base installations of the block of electronic control are broken.
5. The detonation gauge is faulty.
6. Depression losses take place

Takes place калильное ignition (the engine continues to work after ignition deenergizing)

1. Idling turns are excessively high
2. Malfunction of components of the power supply system or an electric equipment (Section of System of an electric equipment of the engine) takes place.
3. The valve of a purge of an adsorber of system of catching of steams of fuel (EVAP) is damaged.
4. The working temperature of the engine is excessive. The possible reasons of the given infringement decrease in level of a cooler, thermostat refusal, blocking of a radiator or malfunction of the water pump can be

The diesel engine smokes

1. A black smoke:

a) the air cleaner Is polluted. Wash out and fill with fresh oil or replace an element.
b) inappropriate fuel Is applied. Wash out a tank and replace fuel.
c) the moment of the beginning of giving ТНВД is incorrectly established.
2. A dark blue smoke:

a) oil Burning in the chamber of combustion owing to deterioration of piston rings, high level of oil in an air cleaner, deterioration of epiploons in covers турбокомпрессора, formations of thinnesses in a lining between the block-karterom and турбокомпрессором. Repair the engine, establish normal level of oil, replace epiploons, tighten fastening bolts турбокомпрессора or replace a lining.
b) fuel to one of atomizers does not move. Check up on heating of final branch pipes of a collector.
c) Bad dispersion of fuel by an atomizer because of malfunction of the valve or spray breakage. Grind in the valve or replace an atomizer.
3. A white or brown smoke:

a) Low temperature in cooling system. Check up the thermostat.
b) Bad work of atomizers owing to deterioration or spray breakage. Replace a spray.

Engine electric equipment

The battery "does not hold" a charge


1. It is worn out or damaged приводной a generator belt, or adjustment of its tension (Section of System of an electric equipment of the engine) is broken.
2. Level of electrolit is insufficient or the battery (Section of System of an electric equipment of the engine) is strongly discharged.
3. Corrosion of plugs of the battery or ослабло fastening on them of tips of wires (Section of System of an electric equipment of the engine) takes place.
4. The generator does not provide a demanded current of a charge (Section of System of an electric equipment of the engine).
5. Electroconducting зарядного a contour or ослабло fastening of wires on plugs is torn off or is in some other way damaged
6. Electroconducting short circuit creates constant leak of a current developed by the battery on weight
7. Internal defect of the battery takes place.

The control lamp of ignition does not die away at increase in turns

1. It is weakened приводной a belt. Check up натяжитель клинового a belt.
2. Damage обгонной муфты (only a turbodiesel). Remove the generator and turn a generator power shaft to the left. If the working surface of a pulley does not rotate, damage, as a rule, in обгонной муфте.
3. Damage of a regulator of pressure/generator. Disconnect a wire (D +) from an underside of the generator and include ignition. If now the control lamp does not light up, malfunction, as a rule, in a regulator of pressure or in the generator.
4. Deterioration of brushes. Visually check up brushes, if necessary replace.
5. Regulator damage. Check up, if necessary replace.
6. Generator damage. Check up, if necessary replace.
7. Wire damage between the generator and a pressure regulator. Disconnect a dark blue wire at contact 12 штекерного connections Т32а and at the block of the panel of devices. If now the control lamp does not light up, wire D + has connection with weight. Replace a plait.
8. Damage of the block of the panel of devices. If after a detachment of a dark blue wire from штекерного connections Т32а at the included ignition the control lamp lights up, malfunction, as a rule, in the block of the panel of devices.

The control lamp of ignition does not light up at ignition key turn in position “ON” (at ignition inclusion)

1. The control lamp on the panel of devices has fused or has otherwise failed
2. The generator is faulty
3. Defect of the printed-circuit board, conducting in the block of a control panel or a lamp cartridge takes place

The control lamp of a charge burns after ignition deenergizing

Pljusovye diodes have short circuit. Check up diodes, replace диодную a payment.

Starter

If the starter does not turn, at first it is necessary to check up, that on the plug 50 traction relays were necessary pressure a minimum 10 V.Esli pressure below this value, it is necessary to check up the wires entering into a contour of a current of a starter under the scheme.

Whether works a starter at full pressure of the battery, it is possible to check up as follows:

– Not including transfers, include ignition.
перемкните plugs 30 and 50 starters a wire of section a minimum 4 мм2, address also to Section “Check of the traction relay”.

If the starter works faultlessly, it is necessary to search for a cause of defect in wires to a starter. If the starter does not earn, it should be checked up in the removed condition.

Check condition: In places of connection of a wire should be well fixed and should not be oxidised.

The starter does not rotate at inclusion of the lock of ignition

1. The battery is discharged. Charge the battery.
2. Перемкните plugs 30 and 50 starters: the Starter rotates. Breakage of a wire 50 to the ignition lock, is faulty the starter switch. Eliminate breakage, replace defective details.
3. Breakage of a cable or a weight socket, the battery it is discharged. Check up cables and battery sockets, measure pressure of the battery, if necessary charge.
4. Insufficient passage of a current owing to the weakened or oxidised sockets. Clear poles and battery plugs, check up connections between the battery, a starter and weight.
5. There is no pressure on the plug 50 traction relays. Wire breakage, the starter switch is faulty.

The starter rotates slowly and does not turn коленвал

1. The battery category. Charge the battery.
2. Summer oil is filled in. Fill in all-weather oil.
3. Insufficient passage of a current owing to the weakened or oxidised sockets. Clear poles and battery plugs, check up connections between the battery, a starter and weight.
4. Coal brushes do not adjoin to a collector, заедают in directing, are worn out, broken, made oily or polluted. Check up brushes, clear or replace. Check up the directing.
5. Insufficient distance between brushes and a collector. Replace brushes and clear directing brushes.
6. The collector in grooves or has scorched and was made oily. Process a collector or replace an anchor.
7. There is no pressure on the plug 50 (minute 8). Check up the switch of a starter or the traction relay.
8. The bearing is broken. Check up the bearing, if necessary replace.
9. The traction relay is faulty. Replace the traction relay.

The starter seizes and rotates the engine jerky

1. The gear wheel drive is faulty. Replace a gear wheel drive.
2. The gear wheel is polluted. Clear a gear wheel.
3. The gear wreath of a flywheel is faulty. Process a gear wreath if it is required, replace a flywheel.

The starter gear wheel does not depart from a wreath

1. The drive of a gear wheel or a carving are polluted or damaged. Clear or replace a gear wheel drive.
2. The traction relay is faulty. Replace the traction relay.
3. The returnable spring ослабла or was broke off. Replace a returnable spring.

The starter continues to work after отпускания the ignition key

1. The traction relay заело, is not disconnected. At once switch off ignition, replace the traction relay.
2. The ignition lock is not disconnected. At once disconnect the battery, replace the ignition lock.

The power supply system

The fuel expense is excessive

1. The element of the air filter is polluted or blocked.
2. Malfunction of components of the power supply system, an electric equipment or electronic control takes place
3. Leaks in system of an admission of air.
4. Damages of system of release/kataliticheskogo of the converter.
5. Pressure in tyres does not suffice or tyres not are established that size.
The diesel engine
6. A contamination of the returnable pipeline. Blow air the returnable pipeline from ТНВД to a fuel tank.
7. Too high turns of idling and the maximum turns. Adjust.
8. The engine has mechanical damages. Check up a compression, if necessary repair the engine.

Leaks of fuel take place and-or there is a gasoline smell

1. There are leaks in lines of giving of fuel or ventilating lines
2. The fuel tank is overflowed. Refuelling make only before automatic switching-off of a pistol.
3. Leaks or evaporations from lines of the power supply system and decrease in toxicity of the fulfilled gases take place

The engine is not started

1. At starter inclusion the electric fuel pump does not work (is not audible noise from work). Slightly knock on the pump case to release заевшую a detail. Check up, whether pressure is put to the pump. Check up serviceability of a safety lock. Check up electric contacts on good conductivity.
2. The relay of the fuel pump is faulty. Check up the relay.
3. Залипли valves of injectors. Check up injectors, if necessary replace. Check up pressure giving on injectors. For this purpose расстыкуйте a socket of injectors. Attach диодную a control lamp to a wire and include a starter. The control lamp should blink.
4. There is no signal from gauges of the moment of ignition or the gauge of turns of the engine. Check up electric wires. Poll memory of malfunctions.
5. Are damaged, littered or негерметичны fuel pipelines, there are defects of hoses.
6. The fuel filter is littered.
7. Ice or wax presence in the filter or pipelines of the diesel engine.
8. Ventilation of a fuel tank is hammered, the filter in a tank is littered.
9. Atomizers of the diesel engine are damaged. Turn on by turns накидные nuts and check up, whether the corresponding cylinder works.

The cold engine is started badly, works unstably

1. The maintenance WITH does not correspond to requirements. Check up the maintenance WITH and idling.
2. The temperature gauge is faulty. Check up the gauge of temperature of a cooling liquid / soaked up air.
3. Pressure of fuel does not correspond to demanded value. Check up pressure of fuel.

The warm engine is started badly, works unstably

1. Негерметична system of an admission of air. Check up inlet system. For this purpose leave the engine to idle and cover places of consolidations and connection on an inlet path with gasoline. If the number of turns increases by short time, eliminate not tight places.

ATTENTION

Gasoline steams are poisonous, do not inhale them.



The engine works with faults

1. Electric connections to the fuel pump interrupt from time to time. Check up a condition штекерных connections and sockets of electric wires of the fuel pump, a measuring instrument of a stream of air and the relay of the fuel pump. Check up a safety lock and places of contacts on the relay of the fuel pump. Clear contacts, if necessary replace.
2. Poor quality of fuel, formation of steam stoppers. Fill qualitative fuel.
3. Too low volume of giving of fuel. Check up productivity of the pump.
4. The fuel filter is faulty. Replace the fuel filter.
5. The fuel pump is faulty. Check up the fuel pump.
6. Injectors are faulty. Check up injectors.
7. The gauge of positions throttle заслонки is faulty. Check up the gauge of positions throttle заслонки.
8. Weak fastening of fuel hoses to ТНВД and to the fuel filter of the diesel engine.

The engine works with faults in work on transitive modes and an idling mode

1. Негерметична system of an admission of air. Check up connections of inlet system. Start the engine and grease with gasoline of a place of contact and connection in a soaking up path. If engine turns quickly increase, eliminate негерметичность.
2. Idling adjustment is incorrect. Check up an idling regulator, the gauge of positions throttle заслонки, ljambda-adjustment.
3. The gauge of full loading is faulty or incorrectly adjusted. Check up the gauge throttle заслонки.

The hot engine is not started

1. Incorrect adjustment of the maintenance WITH. Check up the maintenance WITH and idling.
2. Too a high pressure in fuel system. Check up pressure of fuel, if necessary replace a pressure regulator.
3. The returnable pipeline between a regulator of pressure and a fuel tank is littered or will drive. Clean or replace the pipeline.
4. The gauge of temperature of the engine is faulty. Check up the temperature gauge.
5. Негерметична the power supply system. Make visual survey of all connections in the field of the engine and the electric fuel pump. Tighten all connections.
6. Негерметична system of an admission of air. Check up all connections of inlet system.

The engine works after deenergizing

1. Негерметичны injectors. Check up injectors.
2. On the diesel engine the valve отсечки fuel does not work.

Greasing system

The control lamp does not burn after ignition inclusion


1. The gauge of pressure of oil is faulty. Include ignition, disconnect a wire from the gauge of pressure of oil and close on weight. If the lamp lights up, replace the gauge.
2. On the gauge pressure, contacts корродированы does not move. Check up electric wires and contacts.
3. The control lamp is faulty. Replace a control lamp.
4. The monitor is faulty. Replace a monitor.

The control lamp does not die away after engine start

Oil перегрето. Fur-trees the control lamp dies away after gas giving, to do it is required nothing.

The control lamp does not die away after giving of gas or lights up during movement

1. Pressure of oil too low. Check up oil level, if necessary add. Check up pressure of oil.
2. The wire to the gauge of pressure of oil has short circuit on weight. Disconnect a cable from the gauge and take aside (without closing on weight), include ignition. If the lamp lights up, check up a wire.
3. The gauge of pressure of oil is faulty. Replace the gauge.

Too low pressure of oil upon all turns

1. In the engine there is not enough oil. Add oil.
2. The mesh filter is littered. Remove the pallet картера, clear the mesh filter.
3. The oil pump is worn out. Remove the oil pump and check up it, if necessary replace.
4. Damages of bearings. Remove the engine.

Too low pressure of oil upon small turns

The reduktsionnyj valve залип abroach because of pollution. Remove and check up the valve.

Too an oil high pressure at number of turns above 2000 rpm

The reduktsionnyj valve does not open because of pollution. Remove and check up the valve.

Cooling system

Overheat

1. The cooler in system does not suffice
2. It is worn out or damaged приводной a belt of the water pump or adjustment of its tension is broken
3. Internal channels of a radiator are blocked or is polluted the radiator lattice (is blocked)
4. The thermostat is faulty
5. Are broken or треснуты fan blades
6. It is faulty вязкостная муфта the fan. Check up муфту the fan: Increase turns of the heated-up engine. As soon as the liquid temperature will reach 90 – 95С, fan turns that will be appreciable on hearing will raise.
7. The index of temperature of a cooling liquid is faulty. Check up the gauge.
8. The pump of a cooling liquid is faulty. Remove and check up the pump.
9. Does not hold pressure a radiator cover. Make check of a cover by pressure (address on a car repair shop).

Overcooling

1. The thermostat is faulty
2. Indications of a measuring instrument of temperature are inexact.

External leaks of a cooler

1. Hoses or ослабло their fastening on unions are damaged or destroyed as a result of ageing of a material. Replace hoses and-or tighten collars of their fastening
2. Epiploons of the water pump are spoilt. In this case the cooler will exude through a control aperture in the pump case
3. Leaks from internal channels of a radiator or the lateral tank (ов) take place. Professional repair of a radiator Is required
4. Leaks through a drain stopper of the engine or выжимные stoppers of water galleries take place

Internal leaks of a cooler


ATTENTION

Internal leaks of a cooler usually come to light by check of a condition of impellent oil. Examine an edge measuring probeа and internal surfaces of a cover (covers) of cylinders on presence of traces of water and oil foaming.


1. Leaks through a lining of a head of cylinders take place. Make check of system of cooling by pressure.
2. There are cracks on walls of cylinders or in head moulding. For check disassemble the engine

There are cooler losses

1. In system it is filled too much cooler
2. The cooler boils away as a result of an engine overheat
3. Internal or external leaks of a cooler take place
4. The radiator cover is faulty. Check up a cover pressure.

Cooler circulation is broken

1. The water pump does not function properly. Most easier to make sure of pump functioning having pressed the top hose of a radiator at the engine working on single turns. If at release a hose the push of a liquid in it is felt, the pump functions regularly
2. Passableness of system of cooling is broken. Merge a cooler, wash out system and fill its fresh смесьюЕсли there is such necessity, remove a radiator and spend it обратнопоточную washing.
3. It is worn out or damaged приводной a belt of the water pump or adjustment of its tension is broken
4. The thermostat is jammed

Heater

The heater fan does not work

1. The safety lock of the motor of the fan is faulty. Check up a fan safety lock, if necessary replace.
2. The fan switch is faulty. Check up, whether pressure is put to preresistors, remove and check up the fan switch.
3. The electromotor is faulty. Check up, whether pressure is put to contacts of the motor of the fan at the included ignition and the closed switch of the fan. If pressure is put, replace the motor.

The heater fan does not work on one of steps

The preresistor is faulty. Replace a connection payment.

The heater is not switched off by a regulator

1. The switch is faulty. Check up the switch.
2. Cables adjusting mixing заслонки are damaged or badly mobile. Replace cables.

Too low capacity of heating

1. Too low level of a cooling liquid. Check up level of a cooling liquid, if necessary add.
2. The block of management of a heater has a heavy course, is faulty. Check up the block of management of a heater, if necessary replace a cable.

Noise in the field of the heater fan

1. The dirt, leaves has got. Remove the fan and clean it, clear the air channel.
2. Disbalance крыльчатки, malfunction of the bearing. Remove the fan motor, check up ease of a course.

Coupling

Coupling is not switched off (control lever РКПП is not translated freely in position of a reverse gear and back at the pedal of coupling squeezed out to a floor)

Will drive or is damaged a coupling disk

Coupling revolves (engine turns raise without increase in speed of movement of the car)

1. The coupling disk is polluted by oil or its frictional overlays are wiped. Remove coupling and check up a condition of its components.
2. The coupling disk was not earned extra properly. For definitive extra earnings of a new disk it can be demanded from 30 to 40 normal starts of the car.
3. The coupling disk/basket is worn out press

At coupling inclusion there is a strong vibration

1. The coupling disk is made oily. Remove coupling and check up a condition of its components. Eliminate all revealed leaks.
2. Are worn out шлицы naves of a conducted disk (a coupling disk). Remove coupling and check up a condition of its components.
3. The disk/basket of coupling or a flywheel will drive press. Remove coupling and check up a condition of its components and a flywheel.

Jerks at coupling work

1. Damage of support of the engine and a transmission. Check up, if necessary replace.
2. Easing of fastening of a transmission in a suspension bracket. Tighten fastening bolts.
3. Non-uniform прилегание a press disk. Replace a coupling basket.
4. The cranked shaft is not centered with a transmission. Check up centering.

Squeal or roar arise at full inclusion of coupling (the pedal is released)

It is jammed выжимной the coupling bearing. Remove coupling and check up a bearing condition. Remove all agnails and teases, and grease the bearing before installation into place.

Squeal or roar arise at full deenergizing of coupling (the pedal is squeezed out)

1. It is worn out or damaged выжимной the bearing
2. Springs (or diaphragm petals) a press disk in a coupling basket are worn out or damaged

The coupling pedal remains squeezed out to a floor after it отпускания

The piston of the main thing or the working cylinder of coupling is jammed. Damages of hydrosystem of coupling or выжимного the bearing. Check up a condition, if necessary remove coupling components.

Manual box of a gear change (РКПП)

At established on neutral transfer of a check point to an engine operating time extraneous noise take place


1. The bearing of a primary shaft is worn out.
2. The bearing of a leading gear wheel of a conducted shaft is damaged.
3. Bearings of an intermediate shaft are worn out.
4. Washers of adjustment axial люфта an intermediate shaft are worn out or damaged.

Extraneous noise take place in any position РКПП

1. Any of the reasons set forth above and-or:
2. In РКПП the insufficient quantity трансмиссионного oils (its level has fallen) is filled in.

Extraneous noise arise on any concrete transfer

1. A teeth of a gear wheel of the given transfer is worn out, damaged or chopped off.
2. The synchronizer of the given transfer is worn out or damaged.

Occurs “соскакивание” a check point from the higher transfer

Between a boat of a box and the engine the dirt or a box has got was displaced in relation to the engine.

At a gear change there are complications

1. It is not completely squeezed out coupling (is switched off).
2. овреждена draught of switching, ослабло its fastening or is broken adjustment. Make careful check of a condition of components, in case of need replace the defective.

Leaks трансмиссионного oils take place

1. In a check point the excessive quantity трансмиссионного oils is filled. In case of need merge surplus.
2. Differential epiploons require replacement.

Automatic transmission (АТ)
ATTENTION

In view of complexity of design АТ full diagnostics of its malfunctions and repair of components are inaccessible to qualification of the average mechanic-fan. At occurrence of any, distinct from listed below problems of functioning АТ the car should be driven away for check and repair in a workshop of car-care centre or representation branch of company AUDI A3.



The shared problems connected with functioning of the mechanism of switching

It is possible to carry the following to number of the refusals connected with infringement of adjustment of draught of switching:

a) engine Start is possible at the positions of transmission which are distinct from “Р” (Parking) and “N” (Neutral).
b) Indications of the indicator of position of transmission differ from really chosen transfer.
c) the Car moves at the transmission established in position “Р”.

Make adjustment of draught of a gear change

Transmission revolves, is switched hardly, publishes extraneous noise or does not provide car movement at installation on one of lobbies or a reverse gear

1. There is a set of the possible reasons of the problems listed in heading, however under the competence of the mechanic-fan one of them - wrong level трансмиссионной liquids gets only.
2. Before driving away the car in a car-care centre workshop check up level and a condition трансмиссионной liquids (Chapter 1). Modify level according to requirements of Specifications or replace a liquid together with the filter. If a situation was not corrected, address for the help to experts.

Leaks трансмиссионной liquids take place

1. Liquid АТ has dark red colour. Traces of its leaks should not be confused to traces of impellent oil which can be taken down on картер transmissions by a running stream of air.
2. For revealing and localisation of a source of leak first of all remove from a transmission boat all traces of a dirt and greasing. Take advantage approaching обезжиривателем and-or make steam cleaning. Then make on the car a short trip on small speed (that leak traces did not communicate a running stream far from its source). Stop, поддомкратьте the car and by visual survey establish a leak source. More often as those act:

a) the Pallet картера transmissions: Tighten fixing bolts and-or replace a pallet lining.
b) the Tube of a gulf of a liquid: Replace rubber consolidation in a place of an input of a tube in картер transmissions.
c) Lines трансмиссионной liquids: Tighten штуцерные connections or replace lines.
d) the Ventilating tube: Transmission is overflowed and-or water has got to it.

Bridges

Extraneous noise

1. Usual road noise. To updating do not give in.
2. Noise of tyres. Check up a condition of protectors and pressure of a rating of tyres.
3. Bearings of wheels, or ослабло effort of their tightening are worn out or damaged.

Vibrations

Check up a condition of bearings of wheels, serially поддомкрачивая corresponding from corners of the car and rotating a wheel in the manual. Listen thus to sounds starting with the bearing. Remove bearings and check up their condition.

Oil leaks

Epiploons of power shafts are damaged

Brake system
ATTENTION

Before coming to the definitive conclusion about presence of problems with brake system make sure that tyres are in a satisfactory condition and are pumped up with demanded pressure, adjustment of corners of installation of forward wheels and the car is not broken is not loaded in the non-uniform image.


The increased course of a pedal of a brake

The brake contour has failed. Check up, whether the brake liquid follows.

The brake pedal springs and fails

1. Air in brake system. Remove air from system.
2. There is not enough liquid in the tank. Add a new brake liquid, remove from system air.
3. Formation of vials of steam. It is shown, mainly, at the big loading on brakes. Replace a brake liquid, remove air from system.

Decrease in effect of braking, pedal fails

1. Негерметичность the pipeline. Tighten connections of the pipeline or replace tubes.
2. Damage of cuffs to the main thing or working brake cylinders. Replace a cuff. In the main brake cylinder replace internal elements, if necessary replace the main cylinder
3. The rubber lining is damaged. Repair a support.

Bad braking despite the big effort of pressing of a pedal

1. Brake overlays are made oily. Replace brake Pads.
2. Are established improper or hardened Pads. Replace Pads. Establish original Pads AUDI.
3. The brake amplifier is faulty. Check up the brake amplifier.
4. Are worn out brake Pads. Replace brake Pads.

At braking the car withdraws aside

1. Pressure in tyres does not correspond to the demanded. Check up and modify pressure in tyres.
2. Non-uniform deterioration of tyres. Replace the worn out tyres.
3. Brake Pads are made oily. Replace Pads.
4. On one axis are established different brake Pads. Replace Pads. Establish original Pads AUDI.
5. A bad condition brake колодок. Replace Pads.
6. Mines of supports are polluted. Clear directing and landing surfaces колодок in a support.
7. Corrosion of cylinders of brake supports. Replace a support.
8. Non-uniform deterioration brake Pads. Replace brake Pads (on both wheels).

The brake is tightened in itself

1. The compensatory aperture in the main brake cylinder is littered. Clean the main cylinder and replace internal elements.
2. Too small backlash between приводным a rod and the piston of the main brake cylinder. Check up a backlash.

Brakes heat up during movement

1. The compensatory aperture in the main brake cylinder is littered. Clear the main cylinder and replace internal elements.
2. Too small backlash between приводным a rod and the piston of the main brake cylinder. Check up a backlash.
3. It is littered дросселирующее an aperture in the special valve on the bottom. Clear the main brake cylinder, replace internal elements and a brake liquid.

Brakes shiver

1. Are established Pads inadequate type. Replace Pads, establish original Pads AUDI.
2. A brake disk in places корродирован. Carefully grind a brake disk.
3. The brake disk has lateral palpation. A disk process or replace.

Brake Pads do not depart from a brake disk, the wheel is hardly turned by a hand

Corrosion in cylinders of brake supports. Repair a support, probably replace.

Non-uniform deterioration колодок

1. Are established Pads inappropriate type. Replace Pads, establish original Pads AUDI.
2. The support is polluted. Clear support mine.
3. A heavy piston stroke. Eliminate.
4. Brake system негерметична. Check up tightness of brake system.

Klinoobraznyj deterioration brake колодок

1. The brake disk rotates not in parallel a support. Check up surfaces прилегания a support.
2. Corrosion in supports. Eliminate pollution.
3. The piston works incorrectly. Check up piston position.

Scratch of brakes

1. Often reason in atmospheric influence (humidity of air). If the scratch appears after long parking at the raised humidity and then vanishes, anything it is not necessary to do.
2. Are established Pads inappropriate type. Replace Pads, establish original Pads AUDI A3, cover basis plates противоскрипной with paste.
3. The brake disk rotates not in parallel a support. Check up surfaces прилегания a brake support.
4. The support mine is polluted. Clear support mine
5. Погнуты fastening springs колодок. Replace fastening springs.
6. Press springs are stretched. Replace press springs.

Pulsation of a pedal of a brake

1. ABS in operation. Normally, the help is not required.
2. Too big lateral palpation or the admission on a thickness of a brake disk. Check up palpation and a thickness. Process or replace a disk.
3. The brake disk rotates not in parallel a support. Check up a surface прилегания a support.

Control lamp ABS lights up during movement

1. Too a food low voltage (more low 10). Check up pressure. Check up, whether the control lamp of the generator after engine start dies away. If everything is all right, check up клиновой a belt of a drive of the generator.
2. Damage ABS. Check up reliability of contact and presence of corrosion of joining of weight at the returnable pump (in the hydraulic block).

Suspension bracket and steering

The car withdraws at movement in one of the parties
SEQUENCE OF ACTIONS
1. Tyres are pumped non-uniformly up.
2. Defect of tyres takes place.
3. Suspension bracket or steering components are worn excessively out
4. Carrying out of adjustment of corners of installation of forward wheels Is required.
5. Forward brake mechanisms are taken

Jerks, дерганье or vibrations take place

1. Balancing of wheels is broken or there was an ovality of disks. Make balancing in шиномонтажной a workshop.
2. Bearings of wheels are worn out, ослабло effort of their tightening or adjustment is broken
3. Shock-absorbers or other components of a suspension bracket are worn out or damaged

Excessive rocking of the car or “зарывание” his nose on turns takes place or at braking

1. Shock-absorbers are faulty. Replace all complete set
2. Are broken or ослабли springs and-or other components of a suspension bracket. Make check of a condition of components

Too hardly the steering wheel rotates

1. Liquid level in the tank of system of hydrostrengthening of a wheel has excessively fallen
2. Tyres are pumped incorrectly up.
3. Hinges of a steering drive are insufficiently greased
4. Adjustment of corners of installation of forward wheels is broken.
5. The hydraulic booster does not develop demanded capacity

Takes place excessive люфт a steering

1. Ослабло effort of a tightening of bearings of forward wheels
2. Suspension bracket or steering components are worn excessively out

The system of hydrostrengthening of a wheel does not develop due effort

1. It is worn out or damaged приводной a belt of the pump of the hydraulic booster or adjustment of its tension is broken
2. Level of a hydraulic liquid has excessively fallen
3. Passableness of hoses or lines of hydraulic system is broken. Check up, in case of need make replacements.
4. Air has got to hydraulic system. Pump over system

Excessive deterioration of protectors (not in one any area) takes place

1. Tyres are pumped incorrectly up.
2. Balancing of wheels is broken. Address in шиномонтажную a workshop.
3. Disks of wheels are damaged. Check up, in case of need make replacement.
4. Suspension bracket or steering components are worn excessively out.

Excessive deterioration of protectors on external edge takes place

1. Tyres are pumped incorrectly up.
2. Turns are too sharply made. Reduce speed.
3. Adjustment of corners of installation of forward wheels (excessive convergence) is broken. Address in a workshop for carrying out of professional adjustment.
4. Will drive or is braided the suspension bracket lever.

Excessive deterioration of protectors on internal edge takes place

1. Tyres are pumped incorrectly up.
2. Adjustment of corners of installation of forward wheels (divergence) is broken. Make adjustment in a car-care centre workshop.
3. Components of a steering or ослабло their fastening are damaged.

Local deterioration of a protector takes place

1. Balancing of wheels is broken.
2. Are damaged or погнуты disks. Check up, in case of need make replacement.
3. Defect of tyres takes place.

Defects of brushes of a screen wiper

Проскальзывание

1. Elastic bands are polluted. Clear elastic bands a rigid nylon brush and a solution of a washing-up liquid or spirit.
2. Shabby edges of brushes, elastic bands are worn out or broken off. Replace elastic bands.
3. The old elastic bands, the cracked surfaces. Replace elastic bands.

In the field of clearing the water rests gather at once in drops

The windscreen is polluted by varnish polish or oil. Clear a windscreen a pure rag with удалителем greasings, oils, силиконов.

The brush clears односторонне - in one party well, in another is not present

1. The elastic band is deformed in one party “does not overturn any more”. Establish a new elastic band.
2. The screen wiper lever is braided, the brush not precisely adjoins to glass. Cautiously turn the lever, vertical position will not be reached yet.

Crude surfaces

1. The elastic band was pulled out from a frame. Cautiously insert an elastic band into a frame.
2. The brush adjoins to glass non-uniformly as spring laths or plates are bent. Replace a brush. This malfunction first of all appears at negligent installation of a spare brush.
3. Force of pressing by the lever is too small. Slightly grease hinges of levers of a screen wiper and a spring or establish the new lever.

Defects of tyres

Strong deterioration of the tyre on both parties of a working surface

Too low pressure in tyres.

Strong deterioration of the tyre in the middle of a working surface, on all circle

Too a high pressure in tyres.

Non-uniform deterioration of a protector

Static and dynamic disbalance of a wheel. Probably too big lateral palpation of a disk, too big люфт in bearing hinges.

Non-uniform deterioration in the middle of a protector

Static disbalance of a wheel. The consequence of strong vertical palpation is possible.

Strong deterioration of separate places in the middle of a working surface

Blocking traces at full braking.

Sawtooth deterioration of a protector. Often together with rupture of a fabric basis which is not visible outside

Car overload. Check up an internal part of the tyre on basis ruptures.

Rubber uvulas at lateral edges of a protector

Wrong adjustment of corners of installation of wheels. The tyre is worn out. On back wheels also check up a shock-absorber condition.

Formation of agnails on one party of a protector of a forward wheel

Wrong adjustment of a convergence. The tyre is worn out. Frequent movement on wavy surfaces. Fast movement on turns.

Cord ruptures. At first are visible only from within

Moving through sharp stones, blows of tyres, etc. on high speed.

Односторонне the worn out working surface

1. Check up disorder adjustment.
2. Damage ABS. Check up reliability of contact of connection with the case at the returnable pump (in the hydraulics block).
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