- Electronic engine management system
- Self-diagnosis system
- Forced crankcase ventilation system
- Fuel vapor recovery system
- Exhaust gas recirculation system
- Catalytic converter


This chapter provides a general description, maintenance and replacement procedures (if possible) elements of the specified systems.
Before deciding if there is a fault with the emission control system, check the fuel and ignition systems. Some emission control system devices require special equipment to diagnose. If you find that the inspection procedure is too complicated for you and you cannot cope with the task, contact a specialized service station. Remember that most often the cause of a system malfunction is a poor connection in the electrical wiring or a poorly attached hose, so check the wiring and hoses first.
This does not mean that the emission control system is difficult to maintain and difficult to repair. Most adjustments and checks can be easily performed in a garage using available tools.
Carefully follow all safety precautions given in this chapter. It should be noted that the illustrations in this Manual may not always fully correspond to the systems actually installed on your vehicle due to the fact that the manufacturer constantly makes changes to the design of even serial models during the production process.
The article is copied from the website mazbook.ru
A plate with information about the emission reduction systems installed on your vehicle is attached to the inside of the hood (figure 1.5). This table provides the main technical data of these systems and information on their adjustments. The plate also shows a diagram of the vacuum hose routing associated with the system.

