Honda Civic/Acura Integra

from 1994 launch

Repair and operation of the car

Inquiry of causes of failures of electric equipment

General information

The typical electric outline is composed of the consumer of the electric power (a component one of work), I group of switches, the alternation, executive electric motors, locks of security, insertions fuses / the switches of the chain about the work of this component one, and also joining electrical system, his contact captures and taken. For aims of the simplification of the implementation of schemes of diagnostic proceedings of electric connections of several systems of the electric equipment of the car they are supplied in the Section of the Scheme of electric connections of the present Chapter.

Before the initial inquiry of causes of the failure of the failed consumer of the electric power, attentively study the corresponding electric circuit, try as it is possible to imagine more clearly the beginning of the functioning of the component ones that are a part of the suspected outline. The list of possible causes of the failure can be minimized by his exception of component ones regularly they work about the work of the checked outline. In the moment of the simultaneous violation of the functioning at the same time of component many people, the failure of the general of the corresponding chains or violation base is the lock / fusing of security of an insertion to cause more probable of the refusal.

Very often the failures of the electric equipment explain for the elementary reasons, like damage for the corrosion or weakening of the fixation of terminal connections, the failure of a lock of security or insertion fuse, the failure of the alternation, etc. Before the initial inquiry of internal defects of the component one refused in fact, attentively check a condition of all the locks of security about his functioning, captures and union of wires. For the definition of the list of the knots that are subject to check and terminal connections, study the corresponding scheme of electric connections.

To the number of the necessary diagnostic equipment in the moment of the inquiry of failures of the electric equipment, it is necessary to transport the instrument of measuring universal to cadeia/voltômetro (12-voltny with the group of wires they join the lamp also it will be convenient for some checks), a cloth with samples of embroidery of lamp with the provision of individual power (sometimes called also by the instrument of measuring of condutividade), an ohmmeter, with the group of wires they join the provision of power, and also the group of the points of passage of wires equipped different type of the union of captures and, it is desirable, the built switch of a chain or a lock of security (to divert of suspect sieges of a chain or component electric). Before resorting to the use of the diagnostic equipment attentively they study the scheme of electric connections of component ones of the corresponding outline (to see Schemes of electric connections - the general information).

The most simple control of a chain that is executed contracting of several sieges of an electrical system of the corresponding outline as a consequence of which the incorrect part of a chain is located can happen for the inquiry of the reason of the refusal that has unstable character (the violations such normally are joined with the oxidation of captures of contact or weakening of the fixation of terminal connections of an electrical system). This control can happen together with someone of enumerated down in the corresponding subsections.

Except the problems joined with the violation of the quality of electric connections, it is necessary to send intervals and short circuits in a chain to the number of the most probable refusals and very often they happen of electric outlines.

The interval of a chain normally is caused by the mechanical damage of driving veins or a lack of interest of captures of contact that leads to the disconnection of an electric outline and the ending of the electric circulation in current him. As a consequence of the interval of a chain component work his stops working, nevertheless the corresponding locks of security / the insertions fuses do not fail.

A chain drawing calls the short circuit an unforeseen circumstance the short circuit of his electrical system. At the same time the current begins the circular in the shortest way, which normally leaves in the weight. The short circuits very often are joined with the violation of the entirety of the isolation of an electrical system and without fail they lead to the failure of the corresponding locks of security / insertions fuses.

Tension checking in a chain

The checking of the tension is between checks standard in case of the refusal of any consumer of the electric power. Join one of wires of the instrument of measuring from a chain or the voltômetro to the negative capture of the battery or some of points confiantemente established in the chassis / motor of the car. The second wire of the device adheres to the terminal connection of the checked outline, preferivelmente to beside the battery or a lock of security. Give the food to an outline. One does not forget of that any chains only are operated in certain provisions of the switch of the ignition. If the tension happens (the joinings lamps of instrument of measuring, or in indicative of the voltômetro the corresponding indication concentrates), the part of chain between the checked terminal connection and the battery means that it is useful.
Continue the register of the same spirit, which in series passes of a terminal connection of a chain to other, which moves in the direction of a lock of battery / security. The defective siege of an outline is going to be located between a point in which the device will not register the presence of the tension both the prior tested and correct terminal connection. Very often the interval of an electrical system or oxidation / weakening of the fixation of the terminal connection appears a cause of the failure.

Inquiry of the reasons of short circuit

First of all desconecte the consumer (consumers) of the electric power of the checked outline (the consumers of the electric power, or go round the paid load, the component ones for which when the current circulation is working in a chain, like lamps, the electric motors, elements of heating, etc. go on they call). Take the lock of security protecting the checked outline and a cloth adheres with samples of embroidery of lamp or the voltômetro to his agreement captures. Give the provision of power to an outline. Remember that some outlines only are operated in certain provisions of the switch of the ignition. If the tension happens in captures of lock of security, therefore, in a chain there was a short circuit (pull an electrical system as the short circuit it can be caused rubbing of his isolation and have unstable character). If the tension if it is going away, nevertheless the security lock after the substitution keeps on merging giving the food in a chain, so the internal defect of the consumer (consumers) of the electric power, the switch or the isolation of an electrical system happens.

Basic violations inquiry

The negative capture of the battery is based "on the weight" like which metal of the unity of power, the elements of body and chassis of the car act. The electric outlines of most of part of the electric equipment are built so that the electrical system only is in use to give of the power provision to a consumer of the positive capture of the battery, the return of the current to the battery is executed in the weight metal. Saying means that the consumers' fasteners of the electric power form a repayable part of an electric chain. In view of the described situation, the weakening of the fixation or the corrosion of basic elements of a component one of work of a chain they implicate the violation of the usefulness of the functioning of an outline (of an exit full of the last one out of the operation before the partial refusal of several sieges of a chain). Specially, as a consequence of the weakening of the brilliance of fixation of a luminescence of illuminating fixations (specially in the presence of the general base with another outline), or the speed of the rotation of an electric motor can lessen (for example, the clothes walk to rub of fabric or the supporter of the system of cooling). At the same time the refusal of an outline can cause the violation of the functioning of other, done not exgently not joined with the failed anyway. Pay the attention that in many certain cars knots join between them for special tires of the base. Such tires are in use when there is no straight contact of metal parts of blocks in view of the equipment of the support taken of rubber flexible (how, for example, in support to the fixation of the unity of power to the chassis of the car).
For the check of the usefulness of the base of a component switch - of the battery and they join one of wires of ohmmeter to the point of the car obviously confiantemente established. Join the second wire of the instrument of measuring to a point of the base of a checked component one. The device will register the null resistance, otherwise it is necessary to check the usefulness of the connection (to see besides that).

In the presence of suspicions in the quality violation of the terminal connection, knot of contact of type of the base and they smooth the inter-connected surfaces of captures to the pure metal. Try to withdraw completely all the aspects of corrosion and dirt, soon scratch out a painting of knife, trying to obtain the unmistakable contact of metal surfaces. In the meeting of the knot they take care of the durability of the pressure of the fixation. Between captures of an electrical system and contacts of the weight, for an asseguramento of the quality of the electric connection, put lavadores with one carve. To avoid that the corrosion development in the future covers the joined terminal connections of free vaseline of acid or lubricant of silicon. The good ways also are an aerosol to seal of component ones of the system of ignition and waterproof lubricant.

Inquiry of intervals of a chain

The unstable refusals of consumers of the electric power very often are joined with the violation of the quality of terminal connections due to the oxidation or weakening of the fixation. Very often for the reduction of a component one in the work condition, it is quite simple to pull the corresponding braid of an electrical system / the electric capture. The easiest way of the inquiry of the interval of a chain is the check of his sieges of work in the existence of condutividade. Desconecte to provision of power of an outline and use the instrument of measuring equipped of the provision of independent power. Join wires of instrument of measuring to both exits of the checked chain (the capture of the offer of food and quite established point). If the device fixes the existence of condutividade (null resistance / the operation from a cloth with samples of embroidery of lamp), therefore, the checked siege of a chain is useful. Otherwise the interval happens. The usefulness of the functioning of switches can happen by a similar way.

Electric captures – general information

Most of captures of chains of the electric equipment of side are manufactured of the plastic and are a multicontact. The confidence of an union of the half of such captures is provided of a zashchelkivaniye of uvulae of lock of the armbands that are built in in captures. The great captures, like some of the located one below the panel of the car, concentrate very often with it for pins it passed by the central part of captures.

Since a rassoyedineniye of the equipped captures of the plastic holds tight the small screwdriver that must pull out exactly uvulae of lock normally it is in use (previously attentively they study a drawing of the joined capture – very often it is not simple to measure a way of fixing of his half for the eye in absolute; some captures are equipped of several lock knots). Only pull for the capture, and not for an electrical system braid, to avoid the chance damage of the captures of contact that are built in in the capture in absolute.

The captures always compose of two half, captures of one of which enter in captures in other. When it studies the schematic images of the captures it tries to define first of all what of his half shows up in an illustration – joined to a braid or one concentrated in a component one. Be remembered of what the captures of a half of the capture always if they put especularmente when regarding other was taken.

Very often, in the diagnostic one of failure of electric chains there is a need for the check of the tension in captures of the joined capture. By such checks the probe of the instrument of measuring is introduced in the corresponding capture of the rear party of the capture (to see an illustration I lower).
Be careful, try not to bend and not to put out captures. If the captures nests are too small, use like the probe the clip of paper of metal office of not inclination to which then it is possible to join a wire of instrument of measuring through a clip like crocodile.