Honda Accord

of release

Repair and operation of the car

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Engine management

Specifications

General parameters

L-probe tension, In
At the opened chain	0.1 ÷ 0.2
At the closed chain	0.1 ÷ 0.9
Resistance of the sensor of provision of a cranked shaft / VMT (ICR/TDC), Ohm	1850 ÷ 2450
Resistance of the sensor of position of pistons (CYP), Ohm	800 ÷ 1500

The scheme of an arrangement of components of control systems of engine/decrease in toxicity of the fulfilled gases in a motive compartment of 4-cylinder models


1 — the Detector of control of electric loadings (ELD) (as a part of the central assembly block of safety locks/relay) 2 — the Valve of system of recirculation of the fulfilled gases (EGR) 3 — the Sensor of absolute pressure in the pipeline (MAR) 4 — the Valve of stabilization of turns of idling (IAC)	5 — the Valve of system of the operated ventilation of a case (PCV) 6 — the Oxygen sensor (l-probe) 7 — the Sensor of position of pistons (CYP) (as a part of the ignition distributor)

The scheme of an arrangement of components of control systems of engine/decrease in toxicity of the fulfilled gases in a motive compartment of the V6 models


1 — the Detector of control of electric loadings (ELD) (under the assembly block of safety locks) 2 — the Valve of system of the operated ventilation of a case (PCV) 3 — the Sensor of absolute pressure in the pipeline (MAR)	4 — the Sensor of provision of a butterfly valve (TPS) 5 — the Valve of system of recirculation of the fulfilled gases (EGR)

For the purpose of decrease in level of issue in the atmosphere of the toxic components getting into composition of the fulfilled engine gases as a result of evaporation and incompleteness of combustion of fuel and also for maintenance of efficiency of return of the engine and decrease in fuel consumption, the cars considered in the present manual are equipped a number of special systems which could be united under the general name of control systems of the engine and decrease in toxicity of the fulfilled gases.

It is necessary to carry the following to number of the systems concerning management of operation of the engine and control of toxicity of the fulfilled gases:

a) System of onboard diagnostics (OBD);
b) System of electronic control by the engine (PGM-FI);
c) Detector of control of electric loadings (ELD);
d) System of recirculation of the fulfilled gases (EGR);
e) System of catching of fuel evaporations (EVAP);
f) System of the operated ventilation of a case (PCV);
g) Catalytic converter.

Functioning of all listed systems, anyway, directly or indirectly, is connected with management of decrease in toxicity of the fulfilled gases.

In the Sections given below the general descriptions of the principles of functioning of each of systems are given, and also procedures of diagnostic checks and recovery repair (if that is obviously possible) components of systems which performance lies within qualification of the average amateur mechanic are stated.

Before coming to conclusion about refusal of toxicity, any of systems of decrease, attentively check serviceability of functioning of power supply systems and ignition (see Chapters of the Power supply system and release and engine Electric equipment). Diagnostics of some of knots of systems of decrease in toxicity demands use special, difficult in application, the equipment and a certain qualification of the performer, and therefore, its performance will be reasonable to charge to professional mechanics of specialized car repair shop.

Told above does not mean that service and repair of components of systems of decrease in toxicity in practice are represented exigeant. Do not forget that one of the most common causes of refusals is elementary violation of quality of vacuum or electric connections, and therefore, first of all it is always necessary to check a condition of nipple and electric sockets. The owner of the car can independently and it is rather simple to make a number of checks, and also, to perform a set of procedures of routine maintenance of the majority of components of systems in house conditions, using at the same time a usual set of the adjusting and metalwork tool. Remark: Do not forget about additional federal guarantee certificates under which components of systems of decrease in toxicity and management of operation of the engine get. Before starting implementation of any procedures on repair of knots and details of these systems, consult about conditions of observance of these obligations in representative office of the Honda company.

Try to observe everything the measures of precautions stipulated in the following Sections when performing service of electronic components of the considered systems. It is necessary to notice that illustrative material can not always correspond in accuracy to real placement of components on the car. Such discrepancies are connected with continuously happening process of modification within a standard design of each model.

Information label of systems of decrease in toxicity of the fulfilled gases (VECI) is fixed in a motive compartment of the car. On a label necessary information on settings and checks of under control systems taking into account all modifications made on the concrete car, and also the scheme of laying of vacuum hoses with identification of various components contains. Before starting service of systems of decrease in toxicity and management of operation of the engine, attentively study data of VECI.

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