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Honda Accord1998-1999 of releaseRepair and car operation |
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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 |
System of onboard diagnostics (OBD) - a principle of functioning and codes of malfunctions Data on diagnostic devices With introduction in production meeting the requirements of the last legislations on environmental protection of system of onboard diagnostics of the second generation (OBD-II) input readers of a special design started to be issued. Some producers adjusted release of the scanners intended for use by amateur mechanics in house conditions, - ask in shops of automobile accessories. In principle, reading written down in memory of system of self-diagnostics of codes of malfunctions can be made by means of a wire crossing point established between concrete plugs of the 16-contact diagnostic socket. General description of OBD system The structure of OBD system includes some diagnostic devices making monitoring of separate parameters of systems of decrease in toxicity and fixing revealed refusals in memory of the onboard processor in the form of individual codes of malfunctions. The system makes also check of sensors and actuation mechanisms, supervises operational cycles of a vehicle, provides possibility of freezing of parameters and cleaning of the block of memory.All models described in the real Management are equipped with system of onboard diagnostics of the second generation (OBD-II). A basic element of system is the onboard processor more often called by the electronic module of management (ESM), or the module of management of functioning of the power unit (RSM). RSM is a brain of a control system of the engine. Basic data arrive on the module from various information sensors and other electronic components (switches, the relay etc.) . On the basis of the analysis of data arriving from information sensors and according to put in memory of the processor in base parameters, RSM develops commands for operation of various operating relays and actuation mechanisms, carrying out thereby adjustment of working parameters of the engine and providing maximum efficiency of its return at the minimum fuel consumption. Data read-out of memory of the OBD-II processor is made by means of the special scanner connected to the 16-contact diagnostic socket of reading of a database (DLC), located under the dashboard from the driver's party of the car.
On service of components of control systems of engine/decrease in toxicity of the fulfilled gases special guarantee certificates with the prolonged validity period extend. It is not necessary to undertake attempts of independent performance of problem diagnostics of RSM or replacement of components of system, to an exit of terms of these obligations, - address to specialists of firm car repair shops of the Honda company. Information sensors Oxygen sensors (l-probes) - the Sensor develops a signal which amplitude depends on a difference of the content of oxygen (About 2) in the fulfilled gases of the engine and external air.The sensor of provision of a cranked shaft (SKR) - the Sensor informs RSM on the provision of a cranked shaft and engine turns. This information is used by the processor at definition of the moments of injection of fuel and installation of a corner of an advancing of ignition. The sensor of position of pistons (CYP) - on the basis of the analysis of signals of RSM arriving from the sensor calculates position of the piston of the first cylinder and uses this information at definition of the moments and sequence of injection of fuel in chambers of combustion of the engine. (TDC) VMT sensor - signals Developed by the sensor are used by RSM at definition of installations of a corner of an advancing of ignition at the moment of engine start. The sensor of temperature of cooling liquid of the engine (eats) - on the basis of information ESM/RSM arriving from the sensor carries out necessary corrections of structure of an air and fuel mix and a corner of an advancing of ignition, and also supervises EGR system work. The sensor of temperature of soaked-up air (IAT) - RSM uses information arriving from the IAT sensor at corrections of a stream of fuel, installations of a corner of an advancing of ignition and management of EGR system functioning. The sensor of provision of a butterfly valve (TPS) - the Sensor is located on the case of a throttle and connected to a butterfly valve axis. By amplitude of given-out TPS of a signal of RSM determines a corner of opening of a butterfly valve (copes the driver from a gas pedal) and as appropriate corrects supply of fuel to inlet ports of chambers of combustion. Failure of the sensor, or weakening of its fastening leads to interruptions of injection and violations of stability of turns of idling. The sensor of absolute pressure in the pipeline (MAR) - the Sensor supervises variations of depth of depression in the inlet pipeline, connected with changes of turns of a cranked shaft and load of the engine and will transform received information to a peak signal. RSM uses information delivered by MAR and IAT sensors at thin corrections of supply of fuel. The barometric sensor of pressure - the Sensor develops the peak signal proportional to changes of atmospheric pressure which is used by RSM at determination of duration of the moments of injection of fuel. The sensor is built in the RSM module and to service in an individual order is not subject. The detonation sensor - the Sensor reacts to change of level of the vibrations connected with detonations in the engine. On the basis of information of RSM arriving from the sensor carries out the corresponding correction of a corner of an advancing of ignition. The sensor of speed of movement of the car (VSS) - As appears from its name, the sensor informs the processor on the current speed of movement of the car. The sensor of size of opening of the EGR valve - the Sensor notifies RSM on size of shift of a plunzher of the EGR valve. Received information is used then the processor at management of functioning of system of a retsirkulyatsiya of the fulfilled gases. The pressure sensor in a fuel tank - the Sensor is a component of system of catching of fuel evaporations (EVAP) and serves for pressure tracking паров gasoline in a tank. On the basis of information of RSM arriving from the sensor gives out commands for operation of electromagnetic valves of a purge of system. The sensor switch of pressure of system of hydrostrengthening of a wheel (PSP) - on the basis of information of RSM arriving from the PSP sensor switch provides increase of turns of idling at the expense of IAC sensor operation for the purpose of compensation of increasing loads of the engine, connected with functioning of the steering hydraulic booster at commission of maneuvers. Transmission sensors - In addition to the data arriving from VSS, RSM receives also information from sensors placed in a transmission, or connected to it. Number of such sensors treat: (а) sensor of turns of a secondary (radical) shaft and (b) sensor of turns of an intermediate shaft. The sensor switch of management of turning on of the coupling of coupling of the conditioner of air - When giving food from the battery to the electromagnetic valve of the To/to compressor the corresponding information signal arrives on RSM which regards it as the certificate of increase of load of the engine and as appropriate corrects turns of its idling. Actuation mechanisms The main PGM-FI relay (the relay of the fuel pump) - RSM makes activation of the relay of the fuel pump at an ignition key povorachivaniye in the situation START or RUN. At ignition inclusion activation of the relay provides pressure lifting in a power supply system. More detailed information on the main relay is provided in Head of the Power supply system and release.Injectors of injection of fuel - RSM provides individual inclusion of each of injectors according to an ignition established order. Besides, the module supervises duration of opening of the injectors, defined in the width of an operating impulse measured in milliseconds and defining amount of fuel injected into the cylinder. More detailed information on a principle of functioning of system of injection, replacement and service of injectors is provided in Head of the Power supply system and release. The module of management of ignition (ICM) - the Module operates functioning of the coil of ignition, defining a demanded base advancing on the basis of developed RSM of teams. On all models of cars considered in the real Management it is used built in the distributor of ignition of ICM, for more details see. Head engine Electric equipment. The valve of stabilization of turns of idling (IAC) - the IAC Valve carries out a dosage of amount of the air which is restarted up bypassing a butterfly valve when the last is closed, or occupies the provision of idling. Opening of the valve and formation of a rezultiruyushchy air stream RSM operates. The electromagnetic valve of a purge of a coal adsorber - the Valve is a component of system of catching of fuel evaporations (EVAP) and, working at the command of RSM, carries out release accumulated in an adsorber паров fuels in the inlet pipeline for the purpose of burning them in the course of normal functioning of the engine. The electromagnet of management of a purge of a coal adsorber - the Electromagnet is used by RSM at check by OBD-II system of serviceability of functioning of EVAP system. Reading of codes of malfunctions Cleaning of memory ESM/RSM
List of codes of malfunctions of system of self-diagnostics of OBD-II
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