Toyota Land Cruiser 100/Amazon, Lexus LX 470

since 1997 of release

Repair and car operation


Toyota Land Cruiser, Amazon, LX470 Lexus
+ Identification numbers of the car
+ Governing bodies and receptions of safe operation of the car
+ Settings and routine maintenance of the car
+ Engine
+ Systems of cooling of the engine, salon and air conditioning heating
+ the Power supply system and production of the fulfilled gases
+ engine Electric equipment
- Control systems of the engine and decrease in toxicity of the fulfilled gases
   Specifications
   System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions
   Oscillograph application for supervision of working signals of a control system
   Check of a condition and ESM replacement
   Information sensors - the general information and check of serviceability of functioning
   Replacement of information sensors
   System of catching of fuel evaporations (EVAP) - the general information, check of a condition and replacement of components
   System of operated ventilation of a case (PCV)
   The catalytic converter - the general information, check of a condition and replacement
+ gear shifting Box
+ Transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




System of catching of fuel evaporations (EVAP) – the general information, check of a condition and replacement of components

General information

Typical scheme of an arrangement of components of EVAP system


The EVAP system accumulates accumulating in a power supply system during car parking fuel evaporations and provides a conclusion them to the inlet highway for burning in the course of normal functioning of the engine (address illustrations above). Improvement of system is made continuously in process of toughening of the requirements shown to protection of environment.

On models of early years of release the EVAP system consisted of the coal adsorber equipped with the control valve and the lines of communication connecting it to a fuel tank of the car. Also into structure of system entered the sensor of temperature of cooling liquid (eats), the vacuum valve switch (VSV) and the module of management (ESM). On models of the last years of release the sensor of pressure of the fuel evaporations is switched in addition on in structure of system, established on a back partition of an impellent compartment. The scheme of an arrangement of components is presented on an illustration. The sensor of pressure traces changes of pressure in the system, connected with development of leaks. The number of components subject to monitoring includes the fuel tank, all vacuum lines brought to an adsorber and the throttle case. EVAP is a part of system of onboard diagnostics of OBD-II (see. Sections System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions and Information sensors - the general information and check of serviceability of functioning) and for check of serviceability of its functioning on models of the last years of release, respectively, is required the special scanner.

The composition of EVAP system can vary depending on a year of release of model. The scheme of laying of vacuum hoses is presented on the special information label of VECI fixed in an impellent compartment of the car.

During car parking fuel evaporations are taken away from cavities of a fuel tank and the throttle case in a coal adsorber where accumulate till engine start. When the engine starts to rotate, the adsorber is blown and its contents are deduced in the inlet pipeline, from where arrive in combustion chambers.

The coal adsorber is equipped with the control valve into which design two balls enter. Depending on the current service conditions of the engine and pressure in a fuel tank the valve opens and closed, regulating branch process паров fuels from a tank and the throttle case.

Check

Complete diagnostics of EVAP system is among the procedures lying outside the limits of qualification of the average amateur mechanic and its performance should be entrusted to specialists of car-care center. It is necessary to notice that on components of system additional federal guarantees extend. More often refusals of EVAP system are connected with damages of a coal adsorber or connecting lines.

Violation of stability of turns of idling, decrease in efficiency of return of the engine, spontaneous остановы the last can be caused by failure of the control valve, damage of a coal adsorber or connecting hoses of EVAP system, and also the wrong laying of the last. Check also a condition of a cover of a jellied mouth of a fuel tank.

Obvious losses of fuel, no less than emergence of its strong smell during parking can be caused by leaks топливопроводов, or damage of the case of a coal adsorber, malfunction of the control valve, a detachment, or violation of passableness of isparitelny lines, and also the wrong laying of the last.

 PERFORMANCE ORDER

1. Check a condition, a route of laying and reliability of connection of all hoses of EVAP system. Make necessary repair or replacement. The damaged components.
2. Examine the adsorber bottom on existence of signs of development of leaks, in case of need make replacement, track correctness of connection of hoses.

3. Disconnect vacuum hoses from the top part of an adsorber (address to an accompanying illustration). To Zakuporta unions A, B and C also submit air pressure no more than 0.1 atm. in the union D. Be convinced that air does not leave via the union F.
4. Create a razryazheniye (no more than 0.1 atm.) on the union C also check that it does not fall if to open the union F.
5. Having closed the union F, create a razryazheniye (no more than 0.1 atm.) on the union D also check that it does not fall, if the union C is closed and falls, if it to open.
6. The faulty adsorber is subject to replacement.

Replacement of a coal adsorber

 PERFORMANCE ORDER

1. Previously having carefully marked, disconnect from an adsorber all vacuum lines.
2. Turn out fixing bolts and remove adsorber assembly.
3. Installation is made upside-down.