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Power supply systems, managements of engine/decrease in toxicity of the fulfilled gases and production of the fulfilled gases>>
Control systems of the engine and decrease in toxicity of the fulfilled gases>>
Check of serviceability of functioning of components of control systems of engine/decrease in toxicity of the fulfilled gases
Check of serviceability of functioning of components of control systems of engine/decrease in toxicity of the fulfilled gases
Petrol models
ECM
The description of the elementary check of ECM is provided in the Section of the Control system by the engine and decrease in toxicity of the fulfilled gases.
TPS
See. Section of System of electric equipment of the engine.
MAF sensor
See. Section of System of electric equipment of the engine.
ECT sensor
See. Section of System of electric equipment of the engine.
IAC valve
See. Section of Check of a power supply system.
Main relay
See. Section of System of electric equipment of the engine.
The sensor of temperature of soaked-up air (IAT)
See. Section of System of electric equipment of the engine.
Warmed up a lambda probes
Tension check
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Warm up the engine to normal working temperature and leave it working at single turns.
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Connect the voltmeter to weight and the plug No. 4 (a black wire) socket checked a lambda probe.
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Several times short breakthroughs lift engine turns, - indications of the voltmeter should change in a range of 0 ÷ 1.0В.
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Speed of fluctuations of tension on post-catalytic a lambda probe is less than on the dokatalitichesky. |
In case of negative result of measurement check serviceability of a condition of system of onboard self-diagnostics (OBD), depth of depression in the inlet pipeline, pressure in fuel lines, - if it is not possible to reveal any deviations, replace a lambda probe. Demanded effort of a tightening the lambda probe makes 30 ÷ 49 Nanometers, do not forget to establish a sealing washer.
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Resistance check
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Make sure that ignition is switched off.
Disconnect from a subject to check a lambda probe electroconducting and connect an ohmmeter to No. No. 1 and 3 plugs of the contact socket, - at temperature 20 ° About result of measurement should make about 6 Ohm. The faulty sensor is subject to replacement, - track observance of effort of a tightening.
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Sensor of a detonation (KS)
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KS is established on the right side of the block of the engine. Without disconnecting the sensor, connect the voltmeter to the plug No. 3 (a flavovirent wire) its contact socket, - the second wire of a measuring instrument earth on weight.
Include ignition and knock with a wrench on a basic beam of the power unit, - the sensor should generate a power surge amplitude less than 1 Century.
The faulty sensor replace (see. Head of System of electric equipment of the engine).
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Sensor of accelerations of the chassis (CAS)
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CAS serves for tracking of vertical movings of a frame of the car at its movement in cross-country conditions. On the basis of data of ECM arriving from the sensor analyzes information on ignition admissions in the engine.
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Without disconnecting from the sensor electroconducting, connect to the plug No. 3 (a blue-green wire) its socket the voltmeter, - the second wire of a measuring instrument earth on weight.
Include ignition and knock with a wrench on a basic arm of the sensor, - the voltmeter should fix a power surge amplitude less 1В.
The faulty sensor replace.
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Diesel models
In addition to described in the Section of Check of a power supply system.
Check of the sensor of provision of a pedal of gas
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Check target tension of the sensor. On single turns the result of measurement should make 0.3 ÷ 1.1В, at completely open butterfly valves - 3.68 ÷ 5.0В.
In case of need disconnect from the sensor electroconducting and fill щуп lezviyny type in a gap between the lever and an emphasis.
Check the sensor on conductivity existence: at thickness щупа 0.45 mm conductivity should take place.
In case of need release the fixing screw and make the corresponding adjustment.
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Check of the relay of shutdown To/in
Principle of management of compulsory shutdown To/in
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By means of this ECM relay provides compulsory shutdown of the coupling of coupling of the To/in compressor for the purpose of maintenance of stability of turns of idling under following conditions:
Within 9 seconds directly after implementation of start of the engine;
At excess in temperature of cooling liquid of value 118°С (the compressor continues to remain disconnected until the temperature will not fall below 113°С);
Within 3 seconds at complete opening of butterfly valves;
For 2 seconds during sharp acceleration with more than 30 percent squeezing of a pedal of gas at speeds of movement 17 km/h are lower.
For check of serviceability of functioning of the relay include ignition and activate central air.
Squeeze out a pedal of gas and aurally make sure of serviceability of shutdown of magnetic coupling of the compressor, - the compressor it should be activated again about 3 seconds later.
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EGR system checks
Check of serviceability of functioning of EGR
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Check is made by means of the diagnostic scanner.
Connect the scanner to DLC start the engine.
Enter into the section of service checks of «2 SERVICE DATA TEST» scanner and according to information displayed the display make sure of serviceability of functioning of EGR system, edges (OFF) should be disconnected compulsorily at operation of the engine on single turns, during a deseleratsiya, at high turns and the raised loadings; during acceleration and at engine warming up the quantity mixed with chambers of combustion of the fulfilled gases is minimized; under all other conditions control of a podmeshivaniye is carried out by means of the operating EGR valve.
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Check of serviceability of functioning of the operating electromagnetic EGR valve
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Disconnect from the valve vacuum hoses.
Having blown in the valve, make sure that it is in a closed position.
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Disconnect from the valve electroconducting and submit on it tension of the battery, - the valve should open (check, having blown).
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The faulty valve is subject to replacement.
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Check of serviceability of functioning of the executive EGR valve
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Start the engine and leave it working at single turns.
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Connect to the valve the manual vacuum pump and create depression, - at depth of depression over 65 mm of mercury. stability of turns of the engine should be broken considerably, up to останова.
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The faulty valve replace, - track, that fixing bolts at installation were tightened with demanded effort.
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