Honda Accord

1998-1999 of release

Repair and car operation



Honda Chord
+ Honda Accord brand Cars
+ Settings and routine maintenance
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
- Engine management
   System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions
   Removal and installation RSM/ESM
   Check of serviceability of a condition and replacement of the sensor of provision of a butterfly valve (TPS)
   Check of serviceability of a condition and replacement of the sensor of absolute pressure in the pipeline (MAR)
   Check of serviceability of a condition and replacement of the sensor of temperature of soaked-up air (IAT)
   Check of serviceability of a condition and replacement of the sensor of temperature of cooling liquid of the engine (eats)
   Check of serviceability of a condition and replacement of the sensor of VMT/provision of a cranked shaft (TDC/CKP)
   Check of serviceability of a condition and replacement of the sensor of position of pistons (CYP)
   Check of serviceability of a condition and replacement of the detector of control of electric loadings (ELD)
   Check of serviceability of a condition and replacement of the sensor switch of pressure in system of hydrostrengthening of a wheel (PSP)
   Check of serviceability of a condition and replacement of the oxygen sensor (l-probe)
   Check of serviceability of a condition and replacement of the sensor of a detonation
   Check of serviceability of a condition and replacement of the sensor of speed of movement of the car (VSS)
   Check of serviceability of functioning and replacement of the valve of stabilization of turns of idling (IAC)
   Check of serviceability of functioning and replacement of the air valve of correction of structure of an air and fuel mix (FIA)
   System of operated ventilation of a case (PCV)
   System of a retsirkulyatsiya of the fulfilled gases (EGR) - the general information, check of a condition and replacement of components
   System of catching of fuel evaporations (EVAP) - the general information, check of a condition and replacement of components
   The catalytic converter - the general information, check of a condition and replacement
+ gear shifting Box
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes





Check of serviceability of functioning and replacement of the valve of stabilization of turns of idling (IAC)

General information

When the engine works at single turns, the structure of an air and fuel mix is supervised by means of the valve of stabilization of turns of idling (IAC). Activation of the IAC valve is made at the command of RSM, depending on the current load of the engine (turning on of the conditioner of air, power steering use, unit temperature etc.) . The valve regulates size of the air stream submitted to the inlet pipeline bypassing a butterfly valve. Basic data of RSM receives from VSS sensors, eats, PSP sensors switches and operation of the coupling of coupling of the К/В compressor. Depending on the current load of the engine the module as appropriate corrects turns of its idling. In order to avoid violation of stability of turns of idling at engine start the IAC valve opens at the moment of a provorachivaniye of the last and remains open for some time right after start, providing supply of additional air in the inlet pipeline.

CHECK

 PERFORMANCE ORDER

Working in an impellent compartment, try not to allow hits of hands, hair and clothes details in contact to moving components, such as driving belts, blades of a krylchatka of the fan, etc.

1. Cock the parking brake, prop up car wheels protivootkatny boots and transfer transmission to neutral transfer (RKPP) or to the situation "R" (AT). According to instructions of manufacturers connect to the engine a tachometer. Start the engine and lift frequency of its rotation to value of 3000 rpm. Wait operations of the fan of system of cooling, then dump turns to single and write down tachometer indications (the fan of system of cooling and all consumers of the electric power should be switched off). If frequency of rotation of a cranked shaft makes 650 ÷ 700 rpm, therefore, the system functions regularly. At result of measurement 650 rpm are lower, disunite the electric socket of the IAC valve. At a detachment of the valve there should be an appreciable decrease in turns of the engine, otherwise the valve most likely is faulty. If falling of turns takes place, and the problem with a podderzhivaniye of their stability does not disappear, check a condition of a plait of electroconducting and its contact connections on a site between the IAC and RSM valve.

2. If the tachometer fixes value more than 750 rpm, muffle the engine and disconnect from the throttle case an inlet air line. Start the engine on single turns. Block the bottom port of the case of a throttle (connected to the IAC valve) a finger, - if turns considerably fall, make correction of installation of their single value, having brought into accord with requirements of Specifications (see. Head of Control and routine maintenance). If to execute adjustment it is not possible, replace the IAC valve. In the absence of falling of turns, check an inlet path on existence of signs of losses of depression.
3. If check confirms serviceability of the IAC valve, however, the problem with violation of stability of turns remains, check a condition of electroconducting and its contact connections on a site between the valve and RSM.

4. Make sure of serviceability of giving of a food from the battery on the IAC valve. Disconnect from the valve electroconducting, include ignitions (the engine do not start) and measure tension between the No. plug 2 sockets from a plait and weight. The nominal rate equals to tension of the battery. In the absence of a food check an electroconducting condition on a chain site between the IAC valve and the main PGM-FI relay (see schemes of electric connections in Head Onboard electric equipment).

5. By an ohmmeter measure resistance between the plug 1 of the IAC valve and weight. The device should register conductivity existence, otherwise make regenerative repair of grounding.
6. At positive results of both checks drive away the car for more detailed diagnostics on car repair shop.

REPLACEMENT

 PERFORMANCE ORDER

1. Disconnect from the IAC valve electroconducting.
2. On the V6 models remove the throttle case from the inlet pipeline (see. Head of the Power supply system and release).
3. Turn out two fixing screws and remove the valve from the inlet pipeline (4-cylinder models) or cases of a throttle (V6 model).
4. Installation is made upside-down. Do not forget to replace a sealing ring.