Systems related to engine management and emission control include the following:
- a) Self-diagnosis system;
- b) Electronic engine management system (PGM-FI);
- c) Electrical load monitoring detector (ELD);
- d) Evaporative Emission System (EVAP);
- e) catalytic converter.
- f) Controlled crankcase ventilation system (PCV);
The functioning of all these systems, one way or another, directly or indirectly, is related to the management of the reduction of exhaust gas toxicity.
The following Sections provide general descriptions of how each system operates, as well as procedures for diagnostic checks and remedial repairs (if it is possible) components of systems, the performance of which lies within the qualifications of the average amateur mechanic
Before coming to the conclusion that any of the emission control systems have failed, carefully check the power and ignition systems for proper functioning (see chapters Power and exhaust systems and Engine electrical equipment). Diagnostics of some of the nodes of the toxicity reduction systems requires the use of special, difficult-to-use equipment and certain qualifications of personnel, and therefore, it would be reasonable to entrust its implementation to professional mechanics of the service center of the car manufacturer.
The foregoing does not mean that the maintenance and repair of components of toxicity reduction systems in practice seem difficult. Do not forget that one of the most common causes of failures is an elementary violation of the quality of vacuum or electrical communications, and therefore, first of all, you should always check the condition of the fitting and electrical connectors. The car owner can independently and quite simply carry out a number of checks, as well as, at home, perform many routine maintenance procedures for most system components, using the usual set of tuning and locksmith tools.
Note. Be aware of additional federal warranties that apply to emission control and engine management components. Before starting any repair procedures for components and parts of these systems, consult the terms of compliance with these obligations at the representative office of Honda.
Try to observe all the precautions specified in the following Sections when performing maintenance of the electronic components of the systems in question. It should be noted that the illustrative material may not always exactly match the actual placement of components on the vehicle. Such inconsistencies are associated with the ongoing process of modification within the framework of the typical design of each model.
An information label of exhaust gas toxicity reduction systems is fixed in the engine compartment of the car (VECI). The label contains the necessary information on the settings and checks of controlled systems, taking into account all the modifications made on a particular vehicle, as well as a diagram of the laying of vacuum hoses with the identification of various components (see illustration). Read the VECI data carefully before servicing the emission control and engine management systems.