Tojota Lend Kruzer, Amazon, Leksus LX470
+ Identification numbers of the car
+ Controls and receptions of safe operation of the car
+ Options and car routine maintenance
+ The engine
+ Systems of cooling of the engine, salon and air conditioning heating
+ The power supply system and release of the fulfilled gases
+ Engine electric equipment
+ Control systems of the engine and decrease in toxicity of the fulfilled gases
- Gear change box
- Automatic transmission (АТ)
Problem diagnostics АТ - the general information
Adjustment of draught of a gear change
Check, adjustment and replacement of the gauge-switch of the permission of start
Removal and installation of assemblage of the lever of selector AT
Removal and installation of automatic transmission
+ Distributing box
+ Transmissionnaja line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
|
Problem diagnostics АТ – the general information
Refusals АТ occur on one of following five reasons more often:
- Decrease in efficiency of return of the engine;
- Infringement of adjustments;
- Malfunction of hydraulics;
- Mechanical damages;
- Refusals of the onboard processor / its alarm chain.
The problem diagnostics always should begin with the most simple checks: estimate level and condition ATF (see the Head of Adjustment and car routine maintenance), check up adjustment of drives of a gear change and throttle заслонки. Further, spend trial runs of the car for the purpose of definition of efficiency of the brought corrections. If to eliminate a problem it was not possible, it is necessary to drive away the car on a car repair shop for more detailed diagnostics with application of the special equipment. The description of infringements of functioning АТ some of symptoms is resulted in the Section devoted to a problem diagnostics of knots and systems of the car in the beginning of the present Management.
Primary checks
|
|
1. During a short trip warm up transmission to normal working temperature.
2. Check up level ATF (see the Head of Adjustment and car routine maintenance):
a. If the liquid has not enough, make corresponding updating, having added necessary quantity fresh ATF. Be convinced of correctness of the spent updating under indications measuring щупа, then check up transmission on presence of signs of external leaks (see more low);
b. If level is excessively high, merge surplus ATF, then check up it on presence of traces of presence of the cooling liquid, testifying to infringement of tightness of internal partitions of the radiator separating its heat exchanger from lateral tanks with ATF (see the Head of System of cooling of the engine, salon and air conditioning heating);
c. If ATF it is made foam, empty transmission and fill with its fresh liquid, – merged ATF check up on presence of traces of presence of a cooling liquid.
3. Check up installation of turns of idling of the engine (see the Head of Adjustment and car routine maintenance). In case of need drive away the car on a car repair shop for performance of corresponding adjustments.
|
|
If the engine is not perfectly in order, it is not necessary to start performance of primary checks of transmission until corresponding corrections will be made. |
4. Make sure of correctness of adjustment and smoothness of a course of draught of a drive of a gear change (the Section Adjustment of draught of a gear change see). |
|
Diagnostics of leaks ATF
The general information
The majority of leaks easily come to light at visual check. Repair usually consists in replacement of a corresponding defective epiploon or a lining. If to reveal a source of leak during external survey it is not possible, operate, as it is described more low.
|
|
1. First of all it is necessary to exclude probability of an error in definition of the nature of leak. It is not necessary to confuse ATF to impellent oil or a brake liquid (трансмиссионная the liquid usually has dark red colour).
2. For revealing of a source of leak make short (some kilometres) a trip, then park the car over the spread blank leaf of a cardboard. After pair minutes the leak source can be revealed in the wake of a liquid dripping on a cardboard.
3. Attentively examine a suspected site and a surface surrounding it, giving particular attention to joints of interfaced surfaces. For the purpose of expansion of a corner of the review take advantage of a pocket pocket mirror.
4. If to reveal a leak source still it is not possible, carefully wipe a surface of a suspected site the rags moistened with solvent, then dry it.
5. Make one more short trip, this time often changing speed of movement, then again examine the cleaned suspected site.
6. After revealing of a source of leak, it is necessary to define and eliminate the reason of its development, and only then to pass to performance of a necessary recovery work. Replacement of the damaged lining will not lead to desirable result if not to eliminate the defect of the interfaced surface which have led to an exit of a sealant out of operation. So, the deformed flange it is necessary отрихтовать. |
|
In below-mentioned subsections the most typical reasons of development of leaks ATF and conditions which should be executed that there were no relapses are listed.
|
|
Part from the listed requirements cannot be executed without application of the special equipment. In this case the car should be driven away on a car repair shop. |
Leaks through прокладочные surfaces
Periodically examine the pallet картера transmissions. Check presence on the places and reliability of a tightening of fixing bolts, watch, that on a cover there were no traces of mechanical damages (pallet deformation can lead to failure located in transmission клапанной assemblages).
Excessively hard tightening of fixing bolts, infringement of passableness of a ventilating line, mechanical damage of a sealing surface concern number of the possible reasons of development of leaks through the pallet картера transmissions, lining destruction, and also occurrence of cracks or порозности walls картера. If the lining of the pallet or картера transmissions is formed by a hermetic pillow, the probability of a wrong choice of type of the last is not excluded. Overflow can result in leaks чрез картера трансмиссионной a liquid, or increase of pressure ATF a pallet lining also.
Leaks through epiploons and cuffs
Excessively high level/pressure ATF, infringement of passableness of a ventilating branch pipe, mechanical damage of walls of a landing nest, damage out of operation concern number of the most typical reasons of an exit of epiploons of transmission actually an epiploon, or wrong installation of the last. The probability of damage of a pin of the shaft passed in an epiploon, or excessive люфт the last as a result of deterioration of bearings is not excluded also.
Check up a condition and correctness of landing of a sealing cuff of a directing tube measuring щупа. Periodically examine on presence of signs of leaks a surface around an arrangement приводной gear wheels of a speedometer/gauge of speed (VSS). In case of need make replacement of a sealing ring.
Leaks through defects in walls картера transmissions
The reason of development of leaks ATF formation of cracks or a time in a body картера transmissions can be, consult at experts of car-care centre.
Check up tightness штуцерных knots of connection of hoses of cooler ATF.
Leaks through сапун and a jellied mouth
Leaks through сапун ventilation or a jellied mouth can occur owing to overflow of transmission, hit in ATF a cooling liquid, passableness infringement sapuna / a ventilating branch pipe or returnable drainage apertures.
Diagnostics of other refusals АТ
Check of serviceability of functioning of electronic subsystems АТ
The structure of an electronic part of a control system of functioning АТ includes system of self-diagnostics which by means of a control lamp of switching-off of raising transfer (O/D OFF) warns the driver about malfunctions arising in transmission. By means of the same control lamp it is possible to define a code brought in memory of the device of malfunction.
|
|
The prevention and reading of codes of malfunctions become possible only at included mode OD (the switch – in position ON), otherwise the control lamp will burn constantly in the regular mode. |
At occurrence of malfunction of gauges of speed (VSS №1 or №2) or one of electromagnetic valves (№№ 1, 2 or 4) a control lamp will start to blink, warning the driver about the arisen malfunction. In case of failure electromagnetic the valve № 3 (the valve of management blocking муфтой the hydrotransformer) preventions of malfunction will not be.
|
|
The code of the malfunction which have arisen in transmission can be defined by means of the same control lamp: for this purpose it is necessary перемкнуть conclusions «ТЕ1» and «Е1» a diagnostic socket (address to an accompanying illustration). |
Check of serviceability of functioning of mechanical subsystems АТ
Check on completely braked car (stall test) Working capacity of transmission and the engine is made by measurement of frequency of rotation of a cranked shaft in positions «R» and «D» АТ at completely braked car.
|
|
ATF it should be heated-up to normal working temperature (50 – 80 hailstones.). Duration of each check should not exceed 5 seconds. |
Check should be made forces of two persons: one should observe of wheels of the car, the second makes necessary manipulations in car salon.
|
|
1. Brake forward and back wheels of the car.
2. Connect to the engine a tachometre.
3. Completely cock a lay brake.
4. Squeeze out against the stop a pedal of a foot brake.
5. Translate a control lever a distributing box in position «Н».
6. Start the engine. Translate selector AT lever in position «D», squeeze out against the stop a pedal of gas and quickly consider tachometre indications.
|
|
If during check performance back wheels of the car start to rotate before frequency of rotation of the engine will reach demanded value, release a pedal of gas and stop check. |
7. Make similar check with transmission transfer in position «R». |
|
If frequency of rotation of the engine in both cases appears identical and below demanded, hence, the engine does not develop a total power, or is faulty муфта hydrotransformer AT free wheeling.
If frequency of rotation of the engine above transmission demanded in position «D», it can testify to excessive pressure decrease in the basic highway, proslipping in муфте a free wheeling № 2, infringement of serviceability of functioning муфты a free wheeling of a raising planetary number, or proslipping in муфте direct transfer of a distributing box.
Excess of frequency of rotation of the engine in position «R» transmissions testifies to pressure drop in the basic highway, proslipping in муфте direct transfer, proslipping in a brake of the first and back transfers, infringement of serviceability of functioning муфты a free wheeling of a raising planetary number, or proslipping in муфте direct transfer of a distributing box.
If engine turns are overestimated in both positions of transmission, means, or pressure in the basic highway has excessively fallen, or level ATF does not correspond to demanded value, or serviceability of functioning муфты a free wheeling of a raising planetary number is broken, or proslipping in муфте direct transfer of a distributing box takes place.
Check of time of delay of switching If at the engine working on single turns to translate the selector lever in one of advance ranges, till the moment of a start of motion should pass some time. On duration of the given delay it is possible to judge serviceability of functioning blocking муфт a raising planetary number, a forward course, direct transfer and a brake of the first and back transfers.
|
|
Check should be made on the heated-up engine to normal working temperature. The end result should be received a method of averaging of results of three checks, between each of which should pass not less than one minute. It is more low resulted detailed descriptions of a course of performance of the given check. |
|
|
1. Completely cock a lay brake. Translate a control lever of a distributing box in position «Н».
2. Start the engine and check up turns of its idling (sm the Head of Adjustment and car routine maintenance), – in case of need make corresponding adjustment.
3. Translate the lever of the selector from position «N» in position «D» and by means of a stop watch measure delay time, – average value of three consecutive measurements should not exceed 1.2 seconds.
4. Operating in a similar manner, define time of a delay of inclusion of a reverse gear which should not exceed 1.5 seconds. |
|
The reason of excessive size of a delay of inclusion too low pressure in the basic highway, infringement of serviceability of functioning муфты a forward course, муфты a free wheeling of a raising number of planetary assemblage, or a brake of the first and back transfers can be.
The hydraulic test
|
|
Check is made by forces of two persons. |
Check is made at heated-up to normal working temperature (50 – 80 hailstones.) ATF.
|
|
1. Turn out заглушку from картера transmissions and screw on its place a nozzle of a special manometre.
2. Cock a lay brake.
3. Start the engine and check up correctness of installation of turns of idling (see the Head of Adjustment and car routine maintenance), – in case of need make corresponding updating.
4. Squeeze out a pedal of a foot brake and translate the selector lever in position «D».
5. Consider the manometre indication at single turns of the engine.
6. Squeeze out against the stop a pedal of gas and consider the new indication of a measuring instrument at the maximum turns of the engine.
|
|
If back wheels start to rotate before turns will reach the maximum value, immediately release gas and stop check. |
7. Operating in a similar manner make gaugings in a backing mode.
8. Compare results of measurement to a card of pressure in the basic highway (the card of pressure can be received at dealers of company Toyota).
9. If pressure in both ranges is overestimated, it is necessary to make adjustment of a cable of an accelerator, to check up a condition throttle заслонки and-or a pressure regulator. |
|
The reasons of the underestimated results besides listed also infringement of serviceability of functioning of the oil pump, and failure blocking муфты a raising planetary number, муфта direct transfer of a planetary number of a distributing box (), муфты a forward course of a distributing box (Н, L), or brakes of inclusion of lowering transfer of a distributing box (L) above can be.
If pressure is underestimated only in a mode «D», hence there is a leak of a working liquid in a management contour in a corresponding range, or is faulty муфта a forward course.
The reason of understating of pressure in a mode «R» leak of a working liquid in a corresponding range, or infringement of serviceability of functioning of a brake of the first and back transfers can be.
Trial runs
|
|
Tests should be made at heated-up to normal working temperature (50 – 80 °С) ATF. |
Check in a range «D» in normal and sports operating modes АТ
|
|
1. Translate selector AT lever in position «D», squeeze out against the stop a pedal of gas and keep it in this position. Check up the moments of a gear change 1-2, 2-3 and 3-4, – compare results of check to standard values.
2. Check is made for normal and sports modes of functioning АТ.
3. Absence of switching 1-2 testifies to an input out of operation the electromagnetic valve №2, or залипания the valve 1-2.
4. For absence of switching 2-3 the electromagnetic valve № 1 answers, the probability залипания the valve of switching 2-3 is not excluded also.
5. In the absence of switching 3-4 check up a condition of the valve 3-4.
6. Infringement of serviceability of functioning throttle заслонки and valves of switching 1-2/2-3/3-4 can appear the reason of failure of the moments of a gear change.
7. Absence of blocking of the hydrotransformer speaks refusal of the electromagnetic valve №3, or залипанием the valve of inclusion of blocking.
8. Estimate smoothness of a gear change. Excessively high pressure in the basic highway, infringement of serviceability of functioning of the hydroaccumulator, or the control ball valve can appear the reason of occurrence of pushes.
9. Moving with the blocked hydrotransformer, or on 4th transfer, estimate intensity of vibrations and a noise background.
|
|
The reason of occurrence of vibrations and noise balancing infringement карданных shaft can be also. |
10. Disperse the car before inclusion of 4th transfer and, braking, define the moments of switching 4-3, 3-2 and 2-1. Compare results of check to standard values.
11. Estimate smoothness of switching.
12. Check up quality of blocking of the hydrotransformer, at uniform movement on 4th transfer blocking should occur for the speed approximately 75 km/h. Slightly press a gas pedal, – engine turns should not change considerably, otherwise hydrotransformer blocking is broken. |
|
Check in a range «2»
|
|
1. Translate selector AT lever in position «2», squeeze out against the stop a pedal of gas and keep it in this position.
2. Define the moment of switching 1-2, compare result of check to standard requirements.
|
|
In the given mode of switching 2-3, 3-4 and hydrotransformer blocking are forbidden; at movement with a speed of 100 km/h and above braking by the engine it is forbidden. |
3. Moving on 2nd transfer, release a pedal of gas and estimate efficiency of braking of the car the engine. If braking is absent, hence, the brake of maintenance of the given mode is faulty. |
|
Check in a range «L» At mode inclusion «L» any raising switchings are forbidden, – the car should move all time for the first transfer.
|
|
1. Release a pedal of gas and estimate intensity of braking by the engine. If braking is absent, hence, the brake of inclusion of the first and back transfers is faulty.
2. Estimate noise level and vibrations in the course of braking of the car by the engine. |
|
Check in a range «R»
|
|
| Translate selector AT lever in position «R» and begin movement in squeezed out against the stop a gas pedal, proslipping of frictional elements of management should be absent. |
|
Check in a range «Р»
|
|
|
Park the car on a bias not less than 5 ° and translate the selector lever in position «Р», a lay brake do not cock, –
омобиль should remain motionless.
|
|
|
|