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Kia Sportage>> Systems of electric equipment of the engine>> System of ignition of the petrol engine>> Checks of a control system by ignition
Checks of a control system by ignition
General information
Components of systems of ignition/engine management are among elements of increased reliability and the majority of refusals, as a rule, appear connected with violation of quality of contact connections, or electroconducting damage. Breakdowns of VV of electroconducting result from pollution, moistening or isolation damage more often. Before coming to conclusion about failure any of system elements, always first of all check a condition of the corresponding electroconducting and its contact connections.
Do not make check of serviceability of giving of tension on spark plugs by a detachment from them of electroconducting and its approbation on mass of the engine, - such diagnostics, besides risk of receiving an electroshock, it is interfaced to danger of failure of ECM or the ignition coil. At violation of stability of working turns of the engine also it is not necessary to try to localize malfunction by a consecutive detachment of electroconducting from spark plugs.
Listed below check allow to define the reason of the malfunctions which symptoms are rather obvious (starter refusal, ignition admissions, etc.). Some, less obvious, violations can not show themselves at the expense of automatic transition of a control system to emergency operation of functioning and are shown only in fuel consumption increase, violation of stability of turns of idling, reduction of efficiency of return of the engine, emergence of detonations and so forth, - address for consultations to specialists of car-care center.
The engine is not started
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Do not forget that failure of an immobilizer of the anti-theft device can be a cause of failure of start of the engine. |
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Check a condition of a safety lock of ignition (see. Head Onboard electric equipment), in case of need make its replacement.
If the starter is not turned, or rotates the engine too slowly, first of all check serviceability of functioning actually a starter, and also a condition of the storage battery. Connect the voltmeter to plugs of the battery and measure its target tension at an engine provorachivaniye by a starter, - if the result of measurement makes less than 9.5 In, it is necessary to check serviceability of a condition of the battery, a starter and components of system of a charge.
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Do not activate a starter continuously within more than 10 seconds! |
Operating strictly according to instructions of the manufacturer, connect a stroboscope and turn the engine a starter, - activation of a lamp of a stroboscope confirms serviceability of giving of VV of tension on spark plugs. Check a condition actually candles. If the stroboscope does not work, estimate a condition of VV of electroconducting (see. Head Current leaving and service).
In the absence of an iskroobrazovaniye make sure of serviceability of the coil (ек) ignitions (simplest to replace the coil obviously serviceable, - alternatively to measure resistance of windings). Do not hurry to throw out the coil suspected of refusal, - before check quality and reliability of its contact connections.
Violation in the powerful buffer target cascade being a component of the module of management of the engine (ECM), and also malfunction any of information sensors of a control system (CMP/CKP), or other accompanying knot can be one more cause of failure of start of the engine, - check memory of ECM on existence of the diagnostic codes written down in it (see. Power supply systems, managements of engine/decrease in toxicity of the fulfilled gases and production of the fulfilled gases).
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Ignition admissions
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Violation of quality of contact connections of electroconducting on plugs of coils of ignition, or any of information sensors (CMP/CKP) appears the reason of admissions of ignition more often.
Switch off ignition and check the corresponding contact sockets on existence of signs of oxidation and reliability of fixing on plugs.
Estimate a condition of VV of electroconducting. Make sure that wires do not adjoin to metal parts of the engine, - if the wire with the broken isolation concerns some metal, at operation of the engine the iskroobrazovaniye will take place not between contacts of the corresponding spark plug, and in a breakdown place. At identification even insignificant damage of isolation at least one of wires replace all set.
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To make sure of serviceability of a condition of VV of electroconducting it is simplest by replacement of all set on obviously serviceable. |
At serviceable electroconducting by the reason of admissions of ignition failure actually candles, or bobbin assembly can be, - replace candles (see. Head the Current leaving and service), check a coil condition. Damage or pollution of the sensor of provision of a cranked shaft (CKP) can be one more reason of emergence of admissions of ignition.
In summary make reading of the DTC codes and cleaning of memory of the module of onboard self-diagnostics (ECM).
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