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Power supply systems, managements of the engine/decrease of toxicity of the fulfilled gases and release 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 by the engine/decrease of toxicity of the fulfilled gases
Check of serviceability of functioning of components of control systems by the engine/decrease of toxicity of the fulfilled gases
Petrol models
ECM
The description of the elementary check ECM is resulted in Section of the Control system by the engine and decrease in toxicity of the fulfilled gases.
TPS
The Section of System of an electric equipment of the engine see.
Gauge MAF
The Section of System of an electric equipment of the engine see.
Gauge ECT
The Section of System of an electric equipment of the engine see.
Valve IAC
The Section of Check of the power supply system see.
The main relay
The Section of System of an electric equipment of the engine see.
The gauge of temperature of soaked up air (IAT)
The Section of System of an electric equipment of the engine see.
Warmed up ljambda-probes
Pressure check
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Warm up the engine to normal working temperature and leave its working on single turns.
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Connect the voltmeter to weight and the plug № 4 (a black wire) a socket of a checked ljambda-probe.
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Some times short jerky lift engine turns, - voltmeter indications should change in a range 0 1.0В.
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Speed of fluctuations of pressure on посткаталитическом a ljambda-probe is less than on докаталитическом. |
In case of negative result of measurement check up 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 ljambda-probe. The demanded effort of a tightening of a ljambda-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 ljambda-probe subject to check electroconducting and connect an ohmmeter to plugs №№ 1 and 3 contact sockets, - at temperature 20 About result of measurement should make approximately 6 Ohm. The faulty gauge is subject to replacement, - track observance of effort of a tightening.
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The detonation gauge (KS)
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KS it is established on the right party of the block of the engine. Without disconnecting the gauge, connect the voltmeter to the plug № 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 gauge should generate jump of pressure by amplitude less than 1 Century
The faulty gauge replace (see the Head of System of an electric equipment of the engine).
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The gauge of accelerations of the chassis (CAS)
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CAS serves for tracing of vertical movings of a frame of the car at its movement in cross-country conditions. On the basis of data ECM arriving from the gauge analyzes the information on ignition admissions in the engine.
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Without disconnecting from the gauge electroconducting, connect to the plug № 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 gauge, - the voltmeter should fix jump of pressure by amplitude less 1В.
The faulty gauge replace.
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Diesel models
In addition to described in Section of Check of the power supply system.
Check of the gauge of position of a pedal of gas
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Check up target pressure of the gauge. On single turns the result of measurement should make 0.3 1.1В, at completely open throttle заслонках - 3.68 5.0В.
In case of need disconnect from the gauge electroconducting and fill щуп лезвийного type in a backlash between the lever and an emphasis.
Check up the gauge on conductivity presence: at a thickness щупа 0.45 mm conductivity should take place.
In case of need release the fixing screw and make corresponding updating.
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Check of the relay of switching-off К/В
Management principle compulsory switching-off К/В
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By means of given relay ECM provides compulsory switching-off муфты couplings of compressor K/V for the purpose of maintenance of stability of turns of idling under following conditions:
Within 9 seconds directly after realisation of start of the engine;
At a value excess in temperature of a cooling liquid 118С (the compressor continues to remain disconnected until the temperature will not fall more low 113С);
Within 3 seconds at full opening throttle заслонок;
For 2 seconds during sharp acceleration with more than 30 percent squeezing of a pedal of gas at speeds of movement below 17 km/h.
For check of serviceability of functioning of the relay include ignition and activate a central air.
Squeeze out a pedal of gas and on hearing make sure of serviceability of switching-off of magnetic coupling of the compressor, - the compressor it should be activated again after approximately 3 seconds.
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System EGR checks
Check of serviceability of functioning EGR
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Check is made by means of the diagnostic scanner.
Connect the scanner to DLC start the engine.
Enter into section of service checks 2 SERVICE DATA TEST the scanner and under the information displayed the display make sure of serviceability of functioning of system EGR, edges it should be disconnected compulsorily (OFF) at engine work on single turns, during time деселерации, at high turns and the raised loadings; during an acceleration and at warming up of the engine the quantity mixed with chambers of combustion of the fulfilled gases is minimised; under all other conditions the control подмешивания is carried out by means of operating valve EGR.
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Check of serviceability of functioning of operating electromagnetic valve EGR
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Disconnect from the valve vacuum hoses.
Having blown in the valve, make sure that it is in the closed position.
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Disconnect from the valve electroconducting and submit on it pressure of the battery, - the valve should open (check up, having blown).
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The faulty valve is subject to replacement.
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Check of serviceability of functioning of executive valve EGR
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Start the engine and leave its working on single turns.
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Connect to the valve the manual vacuum pump and create depression, - at depth of depression over 65 mm hg 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 have been tightened with demanded effort.
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