LEXUS RX 300

1998-2003 of release

Repair and car operation



Лексус RX 300
+ Cars Lexus RX-300
+ Controls and operation receptions
+ Options and car routine maintenance
+ The engine
+ Systems of cooling of the engine, heating, ventilation and air conditioning
+ The power supply system and release of the fulfilled gases
+ Systems of an electric equipment of the engine
- Automatic transmission and interaxal differential
   The general information
   Search of malfunctions - the general information
   Replacement of gauges
   Removal and installation of assemblage of valves AT
   Checks and adjustments АТ
   Removal and installation of cooler ATF
   Removal and installation of assemblage of the lever of the selector of modes АТ
   Removal and installation АТ
+ Трансмиссионная a line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Basic schemes of electric connections


The general information

On cars considered in the present Management automatic transmission (АТ) U140E (the front-wheel models delivered on the American market) or U140F (all-wheel drive models) is established. It is more low considered АТ U140F.

Design АТ U140F

C1 — Муфта advances
C2 — Муфта direct transfer
C3 — Муфта lowering transfer
B1 — The Brake of 2nd transfer

B2 — The Brake of 1st transfer and a backing
B3 — The Brake of lowering transfer
F1 — Unilateral муфта №1
F2 — Unilateral муфта lowering transfer

The components involved in work АТ

At the moment трогания from place АТ acts in a role of ordinary coupling, and during movement performs work on a gear change.

Basic knots АТ are: the converter of the twisting moment (hydrotransformer), a planetary reducer and the hydraulic or electronic block of management. To transition to other transfer relation in a planetary reducer are applied гидроприводные disk brakes and disk coupling.

The converter of the twisting moment on the functions corresponds to hydraulic coupling. Its problem includes coupling realisation at трогании from a place and a gear change.

The control system of transmission is a component of a control system of the engine and on the basis of the analysis of the data arriving from various information gauges (not necessarily directly related to functioning actually transmissions), chooses optimum from the point of view of profitability, smoothness of switchings and so forth a mode of functioning АТ. At failure detection in memory of the block of management the corresponding code (Specifications to the Head of System of an electric equipment of the engine see) registers.

Components of a control system of transmission

1 — the Gauge of speed of a secondary gear wheel
2 — Э/м switching valve SLT
3 — Э/м switching valve SL1
4 — Э/м switching valve DSL
5 — Э/м switching valve SL2
6 — the Gauge of entrance turns of the turbine
7 — the Gauge of temperature ATF

8 — Д/В modes P / N
9 — Э/м switching valve S4
10 — К/Л malfunctions (MIL)
11 — Socket DLC №3
12 — Д/В stoplights
13 — the Main switch of mode O/D
14 — the Switch of modes
15 — ECM

Unique procedure of service АТ which performance should be made on a regular basis, check of level of its working liquid (ATF) which order of performance is stated in the Head of Adjustment and car routine maintenance is. Necessity for regular replacement ATF is absent.

Near to a radiator of system of cooling of the engine cooler ATF is established.

Transmission operating modes are described in the Head Controls and operation receptions.

Thanks to application Д/В of modes P / N engine start can be carried out only when selector AT lever is in position Р or N, that allows to prevent casual movement of the car at start attempt.

In the present chapter the general procedures of service АТ laying within qualification of the average mechanic-fan are considered only most.





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