Diagnostics of malfunctions of knots and car systems
The owners of cars who are carrying out procedures of routine maintenance of the car Routine maintenance of the present Management to the schedule agrees resulted in the Head will be extremely seldom compelled to address to materials of the given section. Reliability of knots and the components established on modern cars is so high that at timely performance of replacement worn out and failed as a result of ageing of a material of details the probability of their sudden refusal is smallest. Refusals extremely seldom occur spontaneously and usually of defect development (sometimes long) are a consequence. In particular, refusal of mechanical components is preceded always by occurrence and development of the characteristic symptoms shown sometimes for many thousand of kilometres of run to an exit of faulty knot out of operation. The same components which can fail unexpectedly usually are not vital for functioning of the basic knots and car systems, or are easily replaced directly on the car in road conditions.
Basic step at revealing of the reason of any refusal is the choice of a point of the beginning of searches. Often the reason appears enough obvious, however in certain cases it is necessary to work, making small investigation. The motorist who has made half-dozen casual checks, replacements and corrections quite has to find out a cause of a failure (or its symptom), however such approach in any way it is impossible to consider chance reasonable, in view of its labour input and aimlessness of expenses of time and means. There is a quiet logic approach to search of the failed knot or a component much more effectively. Necessarily it is necessary to take into consideration all preceding breakage, sometimes insignificant, symptoms and guarding signals, such as loss of capacity developed by the engine, change of indications of measuring instruments, occurrence of unusual sounds and smells, etc. Do not forget that failure of such components as safety locks or spark plugs can be only a symptom of the more deeply latent infringement.
More low in the given section simple enough scheme of diagnostics of most often happening refusals is resulted. The reasons of infringements and their symptoms are grouped on the basis of their relation to functioning of any concrete unit or system, for example: the Engine, cooling System etc. In brackets are given references to corresponding Chapters and the sections of the Management concerning functioning of components suspected of malfunction.
Without dependence by nature refusal identical base principles are put in a basis of investigation of its reason:
-
Make sure of correctness of definition of symptoms of refusal. This means confidence of delimitation of area of searches that is especially important with the help in refusal diagnostics to other motorist which not in a condition adequately to state symptoms of taking place infringement.
-
Try not to look through obvious infringements. For example, if the engine is not started, do not hesitate to check up fuel presence in a petrol tank (thus it is not necessary to take on trust statements of the owner of the faulty car). In default electric equipments first of all it is necessary to check up a condition and reliability of fastening клеммных electroconducting connections, only after that it makes sense to get diagnostic devices.
-
Try to eliminate a cause of a failure, instead of its symptom. Replacement of the discharged battery new will help to make the engine start, however the taking place reason of a discharge of the old battery remains not eliminated that will lead to fast failure and new. Also replacement of the spark plugs filled in with oil (petrol engines) will allow to restore for some time serviceability of functioning of the engine, however its refusal by all means soon will repeat again (if the reason lay not simply in application of candles not that type).
-
Do not take on trust any statements. Remember that "the new" component itself can appear faulty, in particular, if it long time has lain in a luggage carrier - it is not necessary to exclude a component from the list checked only for the reason that it is new or is recently established. In case of neglect it is not necessary to be surprised with performance of the made recommendation, when the cause of a failure revealed at last will appear lying on a kind from the very beginning.
Diagnostics of the general engine failures
The engine is not turned at attempt of its start
• polar plugs of the battery, or ослабло fastening on them of tips of wires (address to the Head Routine maintenance) Are oxidised.
• the battery (start and charge Systems see) Is discharged or faulty.
• It is torn off or electroconducting of a chain of system of start, or ослабло fastening of plugs of contact connections (start and charge Systems see) is otherwise damaged.
• the traction relay or the ignition switch (start and charge Systems see) Is faulty.
• the starter electromotor (start and charge Systems see) Is faulty.
• a teeth приводной gear wheels of a starter or a flywheel wreath (the corresponding section of the Head Repair of the engine and section ignition System - petrol models see) Is broken off or worn out.
• the tyre of grounding of the engine, or ослабло it клеммное connection (start and charge Systems see) Is torn off.
The engine is turned, however is not started
• the fuel tank Is empty.
• the battery (the engine is turned too slowly) (start and charge Systems see) Is discharged.
• polar plugs of the battery, or ослабло fastening on them of tips of wires (address to the Head Routine maintenance) Are oxidised.
• components of system of ignition - petrol models (car Routine maintenance - petrol models and ignition System - petrol models see) Are humidified or damaged.
• It is torn off or electroconducting of a chain of system of ignition, or ослабло fastening of plugs of contact connections - petrol models (car Routine maintenance - petrol models and ignition System - petrol models see) is otherwise damaged.
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (address to the Head Routine maintenance) is broken.
• the preheat system - diesel models (the preheat System - diesel models see) Is faulty.
• the system of injection of fuel - petrol models (the Power supply system - petrol models see) Is faulty.
• It is faulty electromagnetic запорный the valve - diesel models (Systems of decrease in toxicity and release of the fulfilled gases see).
• air has got To the power supply system - diesel models (the Power supply system - diesel models see).
• mechanical damage of the engine (for example, a camshaft drive) (the corresponding section of the Head engine Repair see) Takes place.
Start of the cold engine is complicated
• the battery (start and charge Systems see) Is discharged.
• polar plugs of the battery, or ослабло fastening on them of tips of wires (address to the Head Routine maintenance) Are oxidised.
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• the preheat system - diesel models (the preheat System - diesel models see) Is faulty.
• the system of injection of fuel - petrol models (the Power supply system - petrol models see) Is faulty.
• the ignition system - petrol models (car Routine maintenance - petrol models and ignition System - petrol models see) Is faulty.
• adjustment of the valve of turns of fast idling - diesel models (the Power supply system - diesel models see) Is broken.
• Has fallen компрессионное pressure (the corresponding section of the Head engine Repair see).
Start of the hot engine is complicated
• the filtering element of an air cleaner Is polluted, or its passableness (address to the Head Routine maintenance) is otherwise broken.
• the system of injection of fuel - petrol models (the Power supply system - petrol models see) Is faulty.
• Has fallen компрессионное pressure (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see).
Starter input in gearing is complicated, or accompanied by extraneous noise
• teeths приводной gear wheels of a starter or a flywheel wreath (the corresponding section of the Head Repair of the engine and section ignition System - petrol models see) Are broken off or worn out.
• Oslabli or blurt out bolts of fastening of a starter (start and charge Systems see).
• internal components of a starter (start and charge Systems see) Are worn out or damaged.
The engine is started, but at once глохнет
• It is torn off or electroconducting of a chain of system of ignition, or ослабло fastening of plugs of contact connections - petrol models (car Routine maintenance - petrol models and ignition System - petrol models see) is otherwise damaged.
• depression losses on the case of a throttle or the inlet pipeline - petrol models (the Power supply system - petrol models see) Take place.
• passableness of an injector/is faulty system of injection of fuel - petrol models (the Power supply system - petrol models see) Is broken.
Stability of turns of idling is broken
• the filtering element of an air cleaner (address to the Head Routine maintenance) Is blocked.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the corresponding section of the Head engine Repair see).
• working ledges of cams of a camshaft (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see) Are worn out.
• the tightness of a belt/chain of drive ГРМ (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see) is incorrectly adjusted.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
Ignition admissions take place at single turns of the engine
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• Are faulty ВВ wires of spark plugs - petrol models (car Routine maintenance - petrol models see).
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models) is faulty.
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
• Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the corresponding section of the Head engine Repair see).
• Are damaged, worn out or hoses of system of ventilation картера (Systems of decrease in toxicity and release of the fulfilled gases see) were disconnected.
Ignition admissions take place at movement on transfer
• passableness of the fuel filter (address to the Head Routine maintenance) Is broken.
• the fuel pump Is faulty, or the pressure developed by it - petrol models (the Power supply system - petrol models or the Power supply system - diesel models see) has fallen.
• ventilation of a fuel tank Is broken, or gasoline pipe lines (the Power supply system - petrol models or the Power supply system - diesel models see) are blocked.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• Are faulty ВВ wires of spark plugs - petrol models (car Routine maintenance - petrol models see).
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
• the ignition coil - petrol models (the ignition System - petrol models see) Is faulty.
• Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the corresponding section of the Head engine Repair see).
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
Stability of turns of the engine is broken during an acceleration
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models or the Power supply system - diesel models see) Take place.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
The engine spontaneously глохнет
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• passableness of the fuel filter (address to the Head Routine maintenance) Is broken.
• the fuel pump Is faulty, or the pressure developed by it - petrol models (the Power supply system - petrol models see) has fallen.
• ventilation of a fuel tank Is broken, or gasoline pipe lines (the Power supply system - petrol models or the Power supply system - diesel models see) are blocked.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
Capacity developed by the engine has fallen
• the belt/chain of drive ГРМ is incorrectly established, or adjustment of effort of its tension (the corresponding section of the Head engine Repair see) is broken.
• passableness of the fuel filter (address to the Head Routine maintenance) Is broken.
• the fuel pump Is faulty, or the pressure developed by it - petrol models (the Power supply system - petrol models or the Power supply system - diesel models see) has fallen.
• Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the corresponding section of the Head engine Repair see).
• spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (car Routine maintenance - petrol models see) is broken.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
• the atomizer () fuel injection - diesel models (the Power supply system - diesel models see) Is faulty.
• installation of phases of injection ТНВД - diesel models (the Power supply system - diesel models see) Is broken.
• brakes (Heads Flowing обслуживаниеи Brake system see) Are taken.
• coupling (Coupling see the Head) Revolves.
There are "shots" in system of release of the fulfilled gases
• the belt/chain of drive ГРМ is incorrectly established, or adjustment of effort of its tension (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines see) is broken.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
The control lamp of pressure of oil continues to burn at the working engine
• oil level Has fallen, or oil not that grade (address to the Head Routine maintenance) is filled.
• the gauge-switch of a control lamp of pressure of oil (start and charge Systems see) Is faulty.
• bearings of the engine and-or the oil pump (Removal and engine major repairs see) Are worn out.
• the working temperature of the engine (see the Head of System of cooling, heating) is excessively high.
• It is faulty редукционный the valve of pressure of oil (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see).
• passableness of the mesh filter маслозаборника (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see) Is broken.
The engine continues to work after ignition deenergizing
• Takes place excessive нагарообразование in the engine (Removal and engine major repairs see).
• the working temperature of the engine (see the Head of System of cooling, heating) is excessively high.
• the system of injection of fuel - petrol models (the Power supply system - petrol models see) Is faulty.
• It is faulty запорный the valve-breaker of switching-off of giving of fuel - diesel engines (the Power supply system - diesel models see).
Extraneous noise at engine work
The knocks caused by too early ignition or a detonation during an acceleration or at increase of loading
• installation of a corner of an advancing of ignition/is faulty ignition system - petrol models (car Routine maintenance - petrol models and ignition System - petrol models see) Is broken.
• spark plugs not that type - petrol engines (address to the Head Routine maintenance) Are established.
• fuel not that grade (address to the Head Routine maintenance) Is filled.
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• Takes place excessive нагарообразование in the engine (Removal and engine major repairs see).
• passableness of an injector (ов) / Is broken the system of injection of fuel - petrol models (the Power supply system - petrol models see) is faulty.
Whistle or сипение
• depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (the Power supply system - petrol models see) Take place.
• leaks of the fulfilled gases in system of release or through a joint of a reception pipe with a final collector (the corresponding section of the Head of the Power supply system and release see) Take place.
• depression losses through vacuum hoses (the corresponding section of the Head of the Power supply system and release see) Take place.
• the lining of a head of cylinders (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see) Is punched.
Gnash or roar
• components of a drive of valves or a camshaft (the Repair procedures which are not demanding extraction of the engine from the car - petrol engines or the Repair procedures which are not demanding extraction of the engine from the car - diesel engines see) Are worn out.
• auxiliary units (the water pump, the generator, etc.) (Heads of System of cooling, heating, an engine Electric equipment etc. see) Are faulty.
Deaf knock
• bearings of the bottom heads of rods (the regular heavy knock sometimes decreasing at increase of loading) (Removal and engine major repairs see) Are worn out.
• radical bearings of a cranked shaft (a roar probably amplifying with increase of loading) (Removal and engine major repairs see) Are worn out.
• Knock of pistons (it is most intensive at the cold engine) (see Removal and engine major repairs).
• auxiliary units (the water pump, the generator, etc.) (Heads of System of cooling, heating, an engine Electric equipment etc. see) Are faulty.
Diagnostics of malfunctions of system of cooling
Overheat
• level of a cooling liquid in system (address to the Head Routine maintenance) Has fallen.
• the thermostat (see the Head of System of cooling, heating) Is faulty.
• passableness of a radiator Is broken or its lattice (see the Head of System of cooling, heating) is blocked.
• the thermosensitive gauge-switch of the electric fan of system of cooling (see the Head of System of cooling, heating) Is faulty.
• the radiator cover (see the Head of System of cooling, heating) Is damaged.
• installation of a corner of an advancing of ignition/is faulty ignition system - petrol models (car Routine maintenance - petrol models or ignition System - petrol models see) Is broken.
• indications of the gauge of temperature (see the Head of System of cooling, heating) Are inexact.
• the Path of system of cooling is blocked by an air stopper (address to the Head Routine maintenance).
Overcooling
• the thermostat (see the Head of System of cooling, heating) Is faulty.
• indications of the gauge of temperature (see the Head of System of cooling, heating) Are inexact.
External leaks of a cooling liquid take place
• hoses or шланговые collars (address to the Head Routine maintenance) Are damaged mechanically or as a result of ageing of a material.
• the radiator or the heater heat exchanger (see the Head of System of cooling, heating) Is damaged.
• the radiator cover (see the Head of System of cooling, heating) Is faulty.
• the epiploon of the water pump (see the Head of System of cooling, heating) Is damaged.
• there Was a boiling up of a cooling liquid as a result of an overheat (see the Head of System of cooling, heating).
• Are damaged выжимные stoppers of a water shirt of the block of the engine (Removal and engine major repairs see).
Internal leaks of a cooling liquid take place
• the lining of a head of cylinders (engine Repair see the Head) Is punched.
• Tresnuta a head of cylinders or the block (engine Repair see the Head).
Strong corrosion of components takes place
• are insufficiently often made опорожнение and washing of system of cooling (address to the Head Routine maintenance).
• water and antifreeze are incorrectly mixed, or antifreeze not that grade (address to the Head Routine maintenance) is applied.
Diagnostics of malfunctions of power supply systems and release of the fulfilled gas
The fuel expense is excessive
• the filtering element of an air cleaner Is polluted or its passableness (address to the Head Routine maintenance) is otherwise broken.
• the system of injection of fuel - petrol models (the Power supply system - petrol models see) Is faulty.
• the atomizer () - diesel models (the Power supply system - diesel models see) Is faulty.
• installation of a corner of an advancing of ignition/is faulty ignition system - petrol models (the ignition System - petrol models see the Head Flowing обслуживаниеи section) Is broken.
• pressure of a rating of tyres (address to the Head Routine maintenance) does not suffice.
Fuel leaks take place, or distinctly smells as gasoline
• the fuel tank, gasoline pipe lines or штуцерные connections (see the Head of the Power supply system and release) Are damaged mechanically or as a result of corrosion development.
It is excessively noisy works or the system of release of the fulfilled gases smokes
• leaks of the fulfilled gases through joints of a final collector or sections of system of release (see the Head of the Power supply system and release) Take place.
• mufflers or pipes of system of release (Heads Flowing обслуживаниеи the Power supply system and release see) Are damaged mechanically or as a result of development of corrosion.
• As a result of damage of pendant support the release system contacts at movement to body or suspension bracket components (address to the Head Routine maintenance).
Diagnostics of malfunctions of coupling
The coupling pedal fails to a floor practically without resistance or with very insignificant resistance
• air/is faulty has got To hydraulic system the main or executive cylinder (Coupling see the Head).
• It is faulty тросовый a drive of deenergizing of coupling (Coupling see the Head).
• the bearing, or a plug of deenergizing of coupling (Coupling see the Head) Is broken выжимной.
• the spring of a press disk of coupling (Coupling see the Head) Is broken диафрагменная.
There is no coupling deenergizing (it is impossible to choose transfer)
• It is faulty тросовый a drive of deenergizing of coupling (Coupling see the Head).
• the Conducted disk is jammed on шлицах a primary shaft of a transmission (Coupling see the Head).
• the Conducted disk "has become attached" to a flywheel or a press disk (Coupling see the Head).
• assemblage of a basket of coupling (Coupling see the Head) Is faulty.
• the mechanism of deenergizing of coupling (Coupling see the Head) Is worn out or incorrectly collected.
Coupling revolves (engine turns raise without increase in speed of movement of the car)
• It is faulty тросовый a drive of deenergizing of coupling (Coupling see the Head).
• frictional overlays of a conducted disk (Coupling see the Head) are worn excessively out.
• Frictional overlays of a conducted disk are polluted by oil or greasing (Coupling see the Head).
• the basket of coupling or ослабло the effort, developed диафрагменной a spring of a press disk (Coupling see the Head) Is faulty.
At coupling inclusion there is a vibration
• frictional overlays of a conducted disk (Coupling see the Head) are worn excessively out.
• Frictional overlays of a conducted disk are polluted by oil or greasing (Coupling see the Head).
• It is jammed or the cable of a drive of deenergizing of coupling (Coupling see the Head) was wiped.
• the disk or диафрагменная a spring (Coupling see the Head) Is faulty or deformed press.
• support of the power unit, or ослабло their fastening (engine Repair see the Head) Are worn out.
• Are worn out шлицы a primary shaft of a transmission or a nave of a conducted disk (Coupling see the Head).
At squeezing or release coupling pedals arise extraneous noise
• It is worn out выжимной the bearing (Coupling see the Head).
• plugs of a pedal of coupling (Coupling see the Head) Are worn out or overdried.
• assemblage of a basket of coupling (Coupling see the Head) Is faulty.
• the spring of a press disk (Coupling see the Head) Is broken диафрагменная.
• Are broken торсионные springs of a conducted disk (Coupling see the Head).
Diagnostics of malfunctions of a manual box of a gear change
The box established on neutral transfer publishes noise at engine work
• bearings of a primary shaft (noise appear at release pedals of coupling and disappear at its squeezing) (the Manual box of a gear change see) * Are worn out.
• It is worn out выжимной the coupling bearing (noise appear at the squeezed out pedal of coupling and can decrease at it release) (Coupling see the Head).
Noise arise on any concrete transfer
• Are worn out, chopped off or teeths of gear wheels (the Manual box of a gear change see) * are otherwise damaged.
The gear change is complicated
• coupling (Coupling see the Head) Is faulty.
• components of the mechanism of a drive of a gear change (the Manual box of a gear change see) Are worn out or damaged.
• blocks of synchronizers (the Manual box of a gear change see) * Are worn out.
The box "comes off" the chosen transfer
• components of the mechanism of a drive of a gear change (the Manual box of a gear change see) Are worn out or damaged.
• blocks of synchronizers (the Manual box of a gear change see) * Are worn out.
• switching plugs (the Manual box of a gear change see) * Are worn out.
• gear change plugs (the Manual box of a gear change see) * Are worn out.
Vibrations take place
• level трансмиссионного oils (address to the Head Routine maintenance) Has fallen.
• bearings (the Manual box of a gear change see) * Are worn out.
Leaks трансмиссионного oils take place
• the target epiploon of differential (the Manual box of a gear change see) Is damaged.
• Leaks through joints картера (the Manual box of a gear change see) *.
• the epiploon of a primary shaft (the Manual box of a gear change see) * Is damaged.
* Though elimination of similar malfunctions lies out of limits of qualification of the average mechanic-fan, the given information will appear useful at dialogue with the professional.
Diagnostics of malfunctions of automatic transmission
|
In view of complexity of design АТ to the average mechanic-fan will be inconveniently enough exact to carry out diagnostics of its refusals and regenerative repair. In case of occurrence of the problems which distinct from are listed more low, to the owner the car it is necessary to address for the help to experts of a workshop of car-care centre. It is not necessary to hasten also with демонтажем faulty transmission as its many checks are made in situ (on a regular place). |
Leaks ATF
• ATF usually has dark colour. It is not necessary to confuse traces of its leak to those from impellent oil - the last can communicate on картер transmissions by a running stream of air.
• For revealing of a source of leak, first of all, it is necessary to clear картер transmissions and surfaces surrounding it of a dirt and greasing (take advantage qualitative обезжиривателем or execute steam cleaning of the unit). Make on the car a short trip with low speed of movement (that leak traces did not communicate far from its source). Поддомкратьте the car also establish it on props. Examine картер transmissions, visually revealing sources of leak ATF. Most often as those act:
- The pallet картера transmissions (Routine maintenance and section Automatic transmission see the Head)
- Directing tube measuring probeа (Routine maintenance and section Automatic transmission see the Head)
- Tubes of connection of transmission with cooler ATF and their unions (Automatic transmission see)
ATF has brown colour or smells as ashes
• level ATF in transmission Has fallen, or the liquid requires replacement (address to the Head Routine maintenance).
Shared problems with a choice of transfers take place
• In section Automatic transmission check and adjustment procedures drive a cable of the selector of transfers АТ are described. Shared problems which can appear connected with adjustment infringement drive a cable are more low listed most:
- The engine is started in the position which is distinct from “Р” or “N”;
- Position of transmission highlighted on the display panel differs from actually chosen;
- The car is set in motion at the transmission established in position “Р” or “N”;
- There are difficulties with a choice or a gear change.
• the Description of procedure of adjustment drive a cable of the mechanism of the selector is resulted in section Automatic transmission.
- There is no automatic switching of transmission on a hill-climbing gear (mode Kick-Down) at full squeezing of a pedal of gas.
• level ATF (address to the Head Routine maintenance) Has fallen.
• adjustment drive a cable of a choice of transfers (Automatic transmission see) Is broken.
The engine is not started, or started in the position of transmission which is distinct from “Р or“N”
• adjustment of the gauge-switch of the permission of start (Automatic transmission see) Is broken.
• adjustment drive a cable of a choice of transfers (Automatic transmission see) Is broken.
Transmission "comes off" the chosen position, is switched hardly or with noise, or does not provide car progress forward or back
• There is a set of the possible reasons of the listed refusals, however one of them gets to sphere of the competence of the average mechanic-fan - infringement of level ATF only. Check up, in case of need make updating of level/replacement of a liquid and the filter, in parallel check up condition ATF (address to the Head Routine maintenance). In all other cases the car should be driven away for diagnostics and regenerative repair/replacement of transmission in a car-care centre workshop.
Diagnostics of malfunctions of power shafts
The gnash and knock take place during turn fulfilment (at small speed of movement and the steering wheel turned against the stop)
• there Was a loss of greasing of the SHRUS, most likely owing to damage of a protective cover (Power shafts see the Head).
• the external SHRUS of a power shaft (Power shafts see the Head) Is worn out.
During an acceleration/deseleratsii there are vibrations
• the SHRUS (Power shafts see the Head) Is worn out.
• Will drive or the power shaft (Power shafts see the Head) is otherwise deformed.
Diagnostics of malfunctions of hydraulic system
Losses of pressure of a hydraulic liquid take place
• passableness of filters of the tank (address to the Head Routine maintenance) Is broken.
• leaks through feeding tube of the pump (the Uniform hydraulic system see the Head) Take place.
• the pressure regulator (the Uniform hydraulic system see the Head) Is faulty.
• Oslab the gate of dump of pressure of a regulator (the Uniform hydraulic system see the Head).
Excessively highly hydraulic pressure
• the pressure regulator (the Uniform hydraulic system see the Head) Is faulty.
Pressure losses in a hydraulic path of an active suspension bracket take place
• the safety valve (the Uniform hydraulic system see the Head) Is faulty.
• the regulator of size of a road gleam (Heads Uniform hydraulic system and the Running gear and a steering see) Is faulty.
• the hydraulic block of an active suspension bracket (Heads Uniform hydraulic system and the Running gear and a steering see) Is faulty.
• the road gleam (Heads Uniform hydraulic system and the Running gear and a steering see) is incorrectly adjusted.
Losses of pressure of a brake liquid take place
• the valve of management of the jack (Heads Uniform hydraulic system and the Running gear and a steering see) Is faulty.
Diagnostics of malfunctions of brake system
|
Before to come to conclusion about refusal of brake system check up a condition and pressure of a rating of tyres, and also uniformity of loading of the car. Diagnostics of any refusals ABS, except for condition check штуцерных connections of hydraulic tubes and hoses, should be made on a car repair shop.
|
At braking course stability of the car is broken
• Are worn out, damaged or made oily brake Pads from one of car boards (Heads Routine maintenance and Brake system see).
• the support piston / the wheel cylinder of one of mechanisms Is jammed, or its moving (Heads Routine maintenance and Brake system see) is complicated.
• From different boards of the car brake kolodki/boots with frictional overlays of various type (Heads Routine maintenance and Brake system see) are established.
• Oslabli bolts of fastening of a support of the brake mechanism (address to the Head Brake system).
• components of a steering drive or a suspension bracket (Heads Routine maintenance and the Running gear and a steering see) Are worn out or damaged.
During braking there are extraneous noise (a gnash or high-frequency squeal)
• frictional overlays brake колодок (Heads Routine maintenance and Brake system see) Are worn out to substrate metal.
• the brake disk - usually after long parking (Heads Routine maintenance and Brake system see) Is damaged by corrosion.
• Between a disk and a board the extraneous subject (for example, a stone) (Heads Routine maintenance and Brake system see) has got.
For a car stop applying of excessively big effort to a brake pedal is required
• the primary or secondary hydraulic contour (address to the Head Brake system) Is faulty.
• the piston () a support (address to the Head Brake system) Is jammed.
• by Wrong image are established brake Pads (Heads Routine maintenance and Brake system see).
• Are established Pads not that type (Heads Routine maintenance and Brake system see).
• frictional overlays of brake kolodok/boots (Heads Routine maintenance and Brake system see) Are polluted.
During braking there is a vibration transferred to a brake pedal or a steering wheel
• excessive palpation of a brake disk (Heads Routine maintenance and Brake system see) Takes place.
• frictional overlays brake колодок (Heads Routine maintenance and Brake system see) Are worn out.
• Oslabli bolts of fastening of a support (address to the Head Brake system).
• components of a suspension bracket either a steering drive, or a support (Heads Routine maintenance and Brake system see) Are worn out.
Brakes "are taken"
• the piston () a support (address to the Head Brake system) Is jammed.
• adjustment of a lay brake (address to the Head Brake system) Is broken.
Back wheels are blocked at normal braking
• the hydraulic system (Heads Uniform hydraulic system and Brake system see) Is faulty.
Diagnostics of malfunctions of a suspension bracket and steering
|
Before to start checks of components of a suspension bracket and a steering drive make sure that a cause of infringement is not the wrong rating of tyres, installation of wheels of a various standard size or “прихватывание” brakes.
|
Course stability of the car is broken
• defect of tyres (address to the Head Routine maintenance) Takes place.
• components of a suspension bracket or a steering drive (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
• adjustment of corners of installation of forward wheels (address to the Head the Running gear and a steering) Is broken.
• Components of a suspension bracket or a steering drive are damaged as a result of failure (address to the Head Routine maintenance).
Takes place люфт wheels and the raised vibration of the car
• balancing of forward wheels (vibration is most considerably transferred through a steering wheel) (Heads Routine maintenance and the Running gear and a steering see) Is broken.
• balancing of back wheels (vibration is most considerably transferred through a car body) (Heads Routine maintenance and the Running gear and a steering see) Is broken.
• wheel disks (Heads Routine maintenance and the Running gear and a steering see) Are damaged or deformed.
• tyres (address to the Head Routine maintenance) Are damaged.
• components of a steering drive or a suspension bracket, or their spherical hinges and-or резинометаллические plugs (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
• Oslabli bolts of fastening of wheels () (Heads Routine maintenance and the Running gear and a steering see).
On turns and at braking there is "galloping" and-or car rocking
• suspension bracket components (Heads Routine maintenance and the Running gear and a steering see) Are damaged.
• the stabilizer of cross-section stability, or its support (address to the Head the Running gear and a steering) Is worn out or damaged.
Roving or the general course instability of the car takes place
• adjustment of corners of installation of forward wheels (address to the Head the Running gear and a steering) Is broken.
• components of a steering drive or a suspension bracket, or their spherical hinges and-or резинометаллические plugs (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
• balancing of wheels (Heads Routine maintenance and the Running gear and a steering see) Is broken.
• tyres (address to the Head Routine maintenance) Are faulty.
• Oslabli bolts of fastening of wheels () (Heads Routine maintenance and the Running gear and a steering see).
Excessively hardly the steering wheel turns
• level of a working liquid of system of hydrostrengthening of a wheel (address to the Head the Running gear and a steering) Has fallen.
• the hinge of a tip of steering draught or a spherical support of the lever of a suspension bracket (Heads Routine maintenance and the Running gear and a steering see) Is jammed.
• adjustment of corners of installation of forward wheels (address to the Head the Running gear and a steering) Is broken.
• Pognuta or is damaged steering рейка or a column (address to the Head the Running gear and a steering).
It is excessive люфт a steering wheel
• It is worn out карданный the hinge () an intermediate shaft of a steering column (address to the Head the Running gear and a steering).
• hinges of tips of steering draughts (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
• transfer (address to the Head the Running gear and a steering) Is worn out реечная.
• components of a steering drive or a suspension bracket, or their spherical hinges and-or резинометаллические plugs (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
Deterioration of tyres is excessive
The raised deterioration of an internal or external part of a protector
• tyres (deterioration of both edges) (address to the Head Routine maintenance) are pumped insufficiently up.
• adjustment of disorder or a longitudinal inclination of an axis of turn of a wheel (deterioration of a protector from one of edges) (address to the Head Routine maintenance) Is broken.
• components of a steering drive or a suspension bracket, or their spherical hinges and-or резинометаллические plugs (Heads Routine maintenance and the Running gear and a steering see) Are worn out.
• speed on turns does not decrease.
• mechanical damage to result of failure Takes place.
Scaly deterioration (обтрепывание) a protector
• convergence installation (address to the Head the Running gear and a steering) Is broken.
Deterioration of the central part of a protector
• Tyres are pumped over (address to the Head Routine maintenance).
Deterioration of internal and external edges of a protector
• Tyres недокачаны (address to the Head Routine maintenance).
Non-uniform deterioration of a protector
• tyre/wheel balancing (address to the Head Routine maintenance) Is broken.
• excessively lateral palpation of a disk or the tyre (address to the Head Routine maintenance).
• the tyre (address to the Head Routine maintenance) Is damaged.
Diagnostics of malfunctions of systems of an electric equipment
|
The problems connected with refusal in system of start are considered above in subsection Diagnostics of the general engine failures. |
The battery "does not hold" a charge
• internal defect of the battery (start and charge Systems see) Takes place.
•· polar plugs of the battery, or ослабло fastening on them of tips of wires (address to the Head Routine maintenance) Are oxidised.
• It is worn out приводной a belt of auxiliary units, or adjustment of effort of its tension (address to the Head Routine maintenance) is broken.
• the Generator does not give out a demanded current of a charge (start and charge Systems see).
• the generator or a pressure regulator (start and charge Systems see) Is faulty.
• there Is a discharge of the battery owing to short circuit in a chain (start and charge Systems and the Onboard electric equipment see).
The control lamp of ignition/charge continues to burn at the working engine
• It is worn out or torn off приводной a belt of auxiliary units, or adjustment of effort of its tension (address to the Head Routine maintenance) is broken.
• contact brushes of the generator (start and charge Systems see) Are worn out, jammed or polluted.
• Oslabli or are broken щеточные generator springs (start and charge Systems see).
• internal defect of the generator or a pressure regulator (start and charge Systems see) Takes place.
• electroconducting of a contour of a charge, or ослабло fastening клеммных connections (start and charge Systems see) Is torn off.
The control lamp of ignition/charge does not light up at engine start
• Has fused a thread накаливания (address to the Head the Onboard electric equipment).
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• the generator (start and charge Systems see) Is faulty.
Lighting devices do not function
• the lamp () (address to the Head the Onboard electric equipment) Has fused.
• the socle of a lamp or cartridge contacts (address to the Head the Onboard electric equipment) Is oxidised.
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• the relay (address to the Head the Onboard electric equipment) Is faulty.
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is damaged.
• the switch (address to the Head the Onboard electric equipment) Is faulty.
Accuracy or stability of indications of devices is broken
Indications raise with increase in turns of the engine
• the pressure regulator (address to the Head the Onboard electric equipment) Is faulty.
There are no indications of the gauge of the expense of fuel or engine temperature
• the gauge (Heads of System of cooling, heating and the Power supply system and release see) Is faulty.
• electroconducting (address to the Head the Onboard electric equipment) Is torn off.
• the measuring instrument (address to the Head the Onboard electric equipment) Is faulty.
The gauge of the expense of fuel or temperature constantly gives out the maximum indication
• the gauge (Heads of System of cooling, heating and the Power supply system and release see) Is faulty.
• electroconducting (address to the Head the Onboard electric equipment) Is torn off.
• the measuring instrument (address to the Head the Onboard electric equipment) Is faulty.
Horn functioning is broken
The horn constantly gives out a sound signal
• the button of inclusion of a horn Is jammed pressed, (address to the Head the Onboard electric equipment).
• short circuit on weight of electroconducting of a horn (address to the Head the Onboard electric equipment) Takes place.
The horn does not give out a sound signal
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• the small horn (address to the Head the Onboard electric equipment) Is faulty.
The horn gives out too weak, or an astable signal
• Oslablo fastening клеммных connections (address to the Head the Onboard electric equipment).
• Oslablo small horn fastening (address to the Head the Onboard electric equipment).
• the small horn (address to the Head the Onboard electric equipment) Is faulty.
Functioning of screen wipers (forward/back) is broken
Screen wipers do not move, or move too slowly
• Brushes "have become attached" to glass, or draught (Heads Routine maintenance and the Onboard electric equipment see) is jammed/is deformed приводная.
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• the relay (address to the Head the Onboard electric equipment) Is faulty.
• It is faulty приводной the electromotor (address to the Head the Onboard electric equipment).
Scope of brushes is excessively great/is small
• levers of screen wipers (leads) (address to the Head Routine maintenance) are incorrectly planted on spindles.
• draught (address to the Head the Onboard electric equipment) Is worn out приводная.
• Oslablo electromotor or draught fastening (address to the Head the Onboard electric equipment).
Brushes do not clear glass
• rubber working elements (address to the Head Routine maintenance) Are worn out.
• Are broken растяжные springs of levers, or levers are jammed on axes (address to the Head the Onboard electric equipment).
• In a liquid of washing of glass the corresponding cleaner necessary for removal of a road film (address to the Head Routine maintenance) is not added.
Functioning windscreen (forward/back) is broken
The one does not function or several snuffled
• passableness of a nozzle (address to the Head Routine maintenance) Is broken.
• the submitting hose Is disconnected, or its passableness owing to blocking or перекручивания (address to the Head the Onboard electric equipment) is broken.
• there is not enough liquid in the tank (address to the Head Routine maintenance).
The pump of giving of a liquid does not function
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• the switch (address to the Head the Onboard electric equipment) Is faulty.
• the pump (address to the Head the Onboard electric equipment) Is faulty.
The liquid starts to move with a delay after pump inclusion
• the unilateral valve in a submitting hose (address to the Head the Onboard electric equipment) Is faulty.
Electric drive functioning Glass lifts is broken
Glasses move only in one direction
• the switch (address to the Head the Onboard electric equipment) Is faulty.
Glass moves too slowly
• It is damaged, jammed, or the regulator (address to the Head the Body and salon furnish) requires greasing.
• Internal components of a door, or its internal upholstery disturb to regulator functioning (address to the Head the Body and salon furnish).
• It is faulty приводной the electromotor (address to the Head the Body and salon furnish).
Glass does not move at all
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• the relay (address to the Head the Onboard electric equipment) Is faulty.
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• It is faulty приводной the electromotor (address to the Head the Onboard electric equipment).
Functioning of the uniform lock is broken
The system does not function at all
• Has fused a safety lock (address to the Head the Onboard electric equipment).
• the relay (address to the Head the Onboard electric equipment) Is faulty.
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• the management block (address to the Head the Body and salon furnish) Is faulty.
The latch is blocked, but not released, or on the contrary
• the main switch (address to the Head the Onboard electric equipment) Is faulty.
• executive rods or levers (address to the Head the Body and salon furnish) Are broken or disconnected.
• the relay (address to the Head the Onboard electric equipment) Is faulty.
• the management block (address to the Head the Running gear and a steering) Is faulty.
One of management motors/electromagnets does not function
• electroconducting, or ослабло fastening клеммных connections (address to the Head the Onboard electric equipment) Is torn off.
• executive assemblage (address to the Head the Body and salon furnish) Is faulty.
• executive rods or levers (address to the Head the Body and salon furnish) Are broken, jammed or disconnected.
• the lock latch (address to the Head the Body and salon furnish) Is faulty.
|