Honda Civic/Acura Integra

from 1994 launch

Repair and operation of the car

System of stabilization of turns of wasting time – the general information, check of a state and substitution of the valve IAC

General information

When the motor works in the only turns, is the composition of the mixture of air fuel controlled by the system of the stabilization of turns of wasting time (IAC). In the Civic models the valve composes the system of RSM and the valve IAC, in the models of Full text – of RSM, thermosensitive of turns of bystry what wastes time (THEY ARE ADJUSTED) and the valve IAC. The activation of the valve IAC is done in the order of ECM/PCM, depending on the current load of the motor (the connection of the condicionador of air, use of the direction of power, unity temperature, etc.) . the valve regulates the size of the air current given to the oil pipeline of entry that goes round a butterfly valve. It obtains basic data of ECM/PCM of VSS, sensors of EST, switches of sensors of PSP and operation of an union of pressure of the compressor К/В. When the module is depending on the current load of the motor as appropriately it corrects turns of what wastes time. To avoid the violation of the stability of turns of wasting time in the launch of the motor to valve IAC open in the moment of a provorachivaniye and the right opened after the departure remains for a while, supplying the provision of additional air in the entry oil pipeline.

To check

ORDER OF REALIZATION

1. Lift the brake of parking, support wheels of the cars you put that you were antishowing and transfer the transmission to the neutral transfer (RKPP) or to the situation "P" (in). According to the manufacturers' educations they join a tacômetro to the motor. The motor begins and lift the frequency of his rotation to the value of 3.000 revolutions per minute. Hope for the operation of the supporter of the system of cooling, soon deposit turns to the only one and disunite the electric capture of the valve IAC. Try not to touch supporter's blades with hands and not to allow the blow in the contact with them of the hair and the free elements of the clothes. In a lack of interest of the valve there will be a perceptible reduction in turns of the motor, otherwise the valve more probably is defective. If the turns fall happens, and the problem with the support of his stability does not disappear, checks a condition of a braid of an electrical system and his connections of contact in the siege between the IAC and valve ECM/PCM. 2nd. Desconecte an electrical system of the valve IAC, includes the ignition (the motor does not begin) and measures the tension between the positive capture of the capture of a braid (the capture of a black-yellow wire) and the mass of a body (companions see illustrations): civic models. The voltômetro will register the tension of battery. If the tension if it is going away, checks a condition of a black-yellow wire of an electrical system in the siege between the valve IAC and the alternation main PGM-FI. Anyway leave the capture disunited for the realization of new checks. 2b. Valve of model of Full text. 3. If the braid of an electrical system of IAC is composed of two wires, adhere to valve through two points of passage of wires straightly to the battery (to the positive capture the yellow-black wire, one adheres to the negation – blue-black). The valve will publish the click every time giving the food. Do not think what the valve operated longer than is necessary to catch the click! 4. If the braid is composed of three wires, adhere to negative probe of an ohmmeter to the central capture of the capture, and positive – in series an each one from the side. In both cases the device will register the resistance of 16÷28 Ohms. 5. In positive results of the checks affirmed in the paragraphs 3 and 4 the car is necessary to be removed in the workshop of repairs of the car of the most detailed diagnostic one of a condition of ECM/PCM and an outline of the valve IAC.

Substitution

ORDER OF REALIZATION

1. Desconecte an electrical system of the valve IAC. 2. Result two fixation screws and withdraw the sensor of the camera of delivery of an air way (to see illustrations in top). 3. The installation is done upside-down. Do not forget of substituting a ring of fighter.