Mazda 626

1991-1998 of release

Repair and operation of the car

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
+ 5. Fuel system
- 6. Exhaust system
   + 6.1. Exhaust system
   - 6.2. Systems of decrease in toxicity of exhausts and management of operation of the engine
      6.2.1. Introduction
      6.2.2. System of self-diagnostics and codes of malfunction
      6.2.3. Central control unit
      6.2.4. Sensor of provision of a butterfly valve
      6.2.5. Air stream sensor
      6.2.6. The sensor of temperature of the arriving air
      6.2.7. Sensor of temperature of cooling liquid
      6.2.8. Sensor of provision of a bent shaft
      6.2.9. Sensor of position of the camshaft
      6.2.10. Switch of system of hydrostrengthening of steering
      6.2.11. Oxygen sensor
      6.2.12. Sensor of detonation combustion of fuel
      6.2.13. Speed sensor
      6.2.14. Air valve
      6.2.15. System of additional air supply on low turns
      6.2.16. System of ventilation of a case
      6.2.17. System of recirculation of exhaust gases
      6.2.18. System of collecting vapors of fuel
      6.2.19. Switch of fires of a stoplight
      6.2.20. Catalytic converter
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips

6.2.17. System of recirculation of exhaust gases

GENERAL INFORMATION

The system of recirculation of exhaust gases reduces the maintenance of an oxide of nitrogen in exhaust gases, directing a part of exhaust gases via the recirculation valve to an inlet collector. The system of recirculation of exhaust gases consists of the valve of recirculation and the sensor of position of the valve.

Check

PERFORMANCE ORDER

	1. For check of the sensor of the valve of recirculation, disconnect the socket of connection of the valve (shooter) and check resistance between plugs 1 and 3, 3 and 5, 2 and 4, 4 and 6 on the valve. It has to make about 22 Ohms. If is not present, replace the valve.
	2. Warm up the engine up to the normal working temperature. Disconnect a vacuum hose from the valve and connect the vacuum pump. During depression creation operation of the engine has to worsen or it can decay in general. If is not present, replace the valve.
3. Check that the electromagnetic valve changed the direction of a stream of air when giving tension.

Replacement of the valve of recirculation

PERFORMANCE ORDER

	1. Disconnect the socket of connection of the valve. Unscrew a recirculation tube, turn off fixing bolts (are specified by shooters) and remove the valve.
2. Installation is carried out upside-down removals. Use new laying.

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