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Subaru Legacy/Outback1999-2003 of releaseRepair and car operation |
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Subaru Legasi, Autbek + Cars Subaru Legacy, Outback + The operation manual + Routine maintenance + The engine + Systems of cooling, heating + The power supply system and release + Engine electric equipment + Manual box and differential + Automatic transmission + Coupling + Brake system + Suspension bracket and steering + Body - Onboard electric equipment Specifications Search of causes of failures of an electric equipment Safety locks - the general information Chain breakers - the general information The relay - the general information and check of serviceability of functioning Details of a lining of onboard electroconducting System of additional safety (SRS) - the device and a functioning principle Diagnostics of malfunctions SRS Removal and installation of components SRS Control system of speed (темпостат) - the device and a functioning principle Check of serviceability of functioning of components and problem diagnostics темпостата Removal, check of a condition and installation of components of a control system by speed Combination of devices - the general information and a principle of functioning of components Problem diagnostics of components of a combination of devices Removal, service and installation of a combination of devices, check of a condition of components Heating of back glass and rear-view mirrors - the general information, check of serviceability of functioning of components, regenerative repair of a thermoelectric heating element Heating of brushes of screen wipers - the general information, check of serviceability of functioning of components, regenerative repair of a thermoelectric heating element Removal, check of a condition and installation of switches of management by functioning of the electric drive of regulators Glass lifts The electric drive of rear-view mirrors - check of serviceability of functioning Removal check and installation of the switch of management by functioning of the electric drive of external rear-view mirrors Removal, check of a condition and installation of the switch of management by functioning of the electric drive of the top hatch Removal, check of a condition and installation combined подрулевых switches Check of serviceability of functioning of electromotors of a drive of screen wipers, removal, check and installation of the operating relay of a back screen wiper on models Legacy of Universal/Outback Check of the relay and switches of lighting and alarm devices Removal and installation of lighting devices, replacement of lamps Removal, check of a condition and installation of small horns and the horn switch Check of a condition and replacement of contact group of the switch of ignition The uniform lock - the device, a functioning principle, diagnostics of malfunctions Removal, check of a condition and installation of components of the uniform lock System иммобилизации the engine - the device, a functioning principle, diagnostics of malfunctions Removal and installation of components of system иммобилизации the engine Removal and installation of assemblage of a radio receiver Removal and installation of loudspeakers Check of a condition and regenerative repair of the window aerial of a radio receiver Removal, installation and check of a condition of the antenna amplifier of a radio receiver Removal and installation прикуривателя + Schemes of electric connections |
Search of causes of failures of an electric equipment
The general data The typical electric contour consists of the electric power consumer (a working element), a set of switches, the relay, executive electromotors, safety locks, the fusible inserts/breakers of the chain concerning work of the given element, and also connecting electroconducting, its contact plugs and sockets. For the purpose of simplification of performance of diagnostic procedures in last Section of the present Chapter schemes of electric connections of systems of an onboard electric equipment are resulted. Before to start search of causes of a failure of the failed consumer of the electric power, attentively study the corresponding electric scheme, try as it is possible to imagine more clearly a principle of functioning of the elements which are a part of the suspected contour. The list of possible causes of a failure can be shown to a minimum by an exception of it of regularly functioning components concerning work of the checked contour. At simultaneous infringement of functioning at once several components, most a refusal plausible reason is failure of the general for corresponding chains of a safety lock / a fusible insert, or grounding infringement. More often electric equipment refusals speak the elementary reasons, such as oxidation, or fastening easing клеммных connections, failure of a safety lock or a fusible insert, relay refusal, etc. Before to start search of internal defects of actually refused component, attentively check up a condition of all safety locks concerning its functioning, sockets and connecting wires (see Section of the Detail of a lining of onboard electroconducting). For definition of the list of knots subject to check and contact sockets, study corresponding schemes of electric connections. To number of the diagnostic equipment more often used by search of refusals of an electric equipment, it is necessary to carry a universal measuring instrument of a chain/voltmeter (for some checks 12-voltnaja the lamp with the complete set of connecting wires also will approach), a lamp-sampler with the individual power supply (sometimes named also a conductivity measuring instrument), an ohmmeter, the power supply with the complete set of connecting wires, and also a set of the wires-crosspieces, equipped various type connecting plugs and, - it is desirable, - the built in breaker of a chain or a safety lock (for shunting of suspicious sites of a chain or electric components). Before to resort to use of the diagnostic equipment attentively study the scheme of electric connections of components of a corresponding contour (Schemes of electric connections see). At revealing of the reason of refusal having astable character (infringements such usually appear connected with oxidation of contact plugs, or fastening easing клеммных electroconducting connections) the elementary check of a chain which are carried out by twitching of various sites of electroconducting of the corresponding contour in which result the defective piece of a chain is localised can be made. The given check can be made together with any of listed more low in corresponding subsections. Except the problems connected with infringement of quality of electric connections, it is necessary to carry breakages and short circuits to number of the most probable and often occurring refusals of electric contours in a chain. Chain breakage is usually caused by mechanical damage токопроводных veins or a detachment of contact plugs that leads to disconnection of an electric contour and the circulation termination in it of an electric current. As a result of chain breakage its working component ceases to function, however corresponding safety locks / fusible inserts do not fail. As short circuit is called unforeseen a design of a chain short circuit of its electroconducting. Thus the current starts to circulate on the shortest way, in most cases leaving on weight. Short circuits appear connected with infringement of integrity of isolation of electroconducting more often and without fail lead to failure of corresponding safety locks / fusible inserts. Pressure stock-taking in a chain Pressure stock-taking is included into number of standard checks in default any consumer of the electric power. Connect one of wires («-») a chain/voltmeter measuring instrument to the negative plug of the battery, or any of reliably earthed points on the car chassis/engine. The second wire of the device connect to клеммному to connection of a checked contour, it is preferable to the nearest to the battery or a safety lock. Submit a food to a contour. Do not forget that some chains запитываются only in certain positions of the switch of ignition. If pressure takes place (the measuring instrument lamp joins, or on the voltmeter indicator the corresponding indication is fixed), the chain piece between checked клеммным connection and the battery means is serviceable. Continue check in the same spirit, serially passing from one клеммного chain connections to another, moving to a direction from the battery/safety lock. The faulty site of a contour will settle down between a point on which the device will not register presence of pressure and the nearest tested serviceable клеммным connection. More often electroconducting breakage, or oxidation/easing of fastening of a contact element appears a cause of a failure. Search of the reasons of short circuit First of all disconnect the consumer () the electric power of a checked contour (electric power consumers, or useful loading of a contour, components for which functioning the current circulating in a chain, such as lamps, electromotors, heating elements, etc. is spent are called) . Take the safety lock protecting the checked contour, and connect to its adjusting plugs a lamp-sampler or the voltmeter. Submit power supplies to a contour, - remember that some of contours запитываются only in certain positions of the switch of ignition. If pressure on safety lock plugs takes place, hence, in a chain there was a short circuit, - pull electroconducting as short circuit can be caused destruction of its isolation and have astable character. If pressure is absent, however the safety lock after replacement continues to fuse at food giving in a chain, means, internal defect of the consumer (it) the electric power, the switch or electroconducting isolation takes place. Alternatively check can be made by means of an ohmmeter: disunite all contact sockets of a suspected site of a chain and, start to connect an ohmmeter between each of sockets and weight, registration by a measuring instrumen |