Mazda 626

1991-1998 of release

Repair and car operation



Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
- 5. Fuel system
   + 5.1. Nikki 30/34 carburetor
   - 5.2. Power supply system (l engines 1,6 and 1,8)
      5.2.1. Introduction
      5.2.2. Technical characteristics
      5.2.3. Pressure release from a power supply system
      5.2.4. Fuel pump / pressure in a power supply system
      5.2.5. Fuel tubes and connections
      5.2.6. Removal and installation of the fuel pump
      5.2.7. Fuel level sensor
      5.2.8. Fuel tank
      5.2.9. Air filter
      5.2.10. Accelerator rope
      - 5.2.11. System of electronic injection of fuel
         5.2.11.1. General description
         5.2.11.2. Check and replacement of elements
   + 5.3. Power supply system (l engines 2,0 and 2,5)
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and semi-axes
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice



5.2.11. System of electronic injection of fuel

5.2.11.1. General description

GENERAL INFORMATION

Scheme of system of electronic injection of fuel of models of 1990-1994 of release

1. Casing of the air filter
2. Resonator branch pipe
3. The sensor of a stream of air (with the temperature sensor)
4. Vacuum chamber *1
5. Valve of interruption of supply of fuel
6. Blowing-off valve of the coal filter
7. *
8. The electromagnetic valve *2 (the operating valve of a regulator of pressure)
9. *
10. Coal filter
11. Pressure regulator
12. Fuel filter
13. Control valve
14. Control and locking valve
15. Separator
16. Fuel tank
17. Fuel pump
18. Fuel filter

19. *
20. Oxygen sensor
21. Valve of ventilation of a case
22. *
23. Injector
24. *
25. The sensor of temperature of cooling liquid of the engine
26. The closing valve
27. Air valve
28. Valve of adjustment of supply of air
29. *
30. Sensor of provision of a butterfly valve
31. *
32. Shock-absorber
33. Resonator chamber
34. *
35. *

* To the electronic control unit operation of the engine

The scheme of system of electronic injection of fuel of models after 1995 of release

1. Capacity for collecting паров fuels
2. Blowing-off valve (top)
3. Blowing-off valve (bottom)
4. Blowing-off valve (top)
5. Sensor of provision of a camshaft
6. Electromagnetic valve
7. Sensor of provision of a butterfly valve
8. Sensor of closing of a butterfly valve
9. Sensor of a stream of air
10. The sensor of temperature of arriving air
11. Air filter
12. Sensor of opening of the valve of a retsirkulyatsiya
13. Retsirkulyatsiya sensor
14. Electromagnetic valve
15. Valve retsirkulyatsiya (ventilating)
16. Valve retsirkulyatsiya (vacuum)
17. Valve of adjustment of supply of air
18. Electromagnetic valve
19. Air valve
20. Locking valve
21. Vacuum chamber

22. Injector
23. Sensor of provision of a cranked shaft
24. The sensor of temperature of cooling liquid
25. Oxygen sensor (forward)
26. Catalytic converter
27. Oxygen sensor (back)
28. Fuel pump
29. Fuel filter
30. The valve preventing leakage of fuel
31. Drain hose
32. Control valve
33. Pressure regulator
34. Coal filter
35. Control valve
36. Fuel pump
37. Ventilating valve
38. The valve of adjustment of pressure in a fuel tank
39. Fuel filter
40. Control valve

The system of electronic injection of fuel consists of three subsystems: a power supply system, system of supply of air and electronic operating system.

Power supply system

The fuel pump pumps up fuel in a fuel collector, from where it through injectors arrives in cylinders. The amount of the fuel injected by injectors, is supervised by the electronic control unit.

System of supply of air

The system consists of the air filter, the case of a butterfly valve, a connecting branch pipe and the sensor of temperature of arriving air.

Electronic control system

The electronic control system supervises system of injection of fuel and other systems by means of the electronic control unit which receives signals from the various sensors which are watching temperature of arriving air, a corner of opening of a butterfly valve, temperature of cooling liquid, speed of rotation of a cranked shaft, speed of movement of the car and the contents WITH in exhaust gases.

Check
PERFORMANCE ORDER
1. Check reliability of connections of wires and reliability of grounding.
2. Check a battery charging.
3. Check the air filter.
4. Check safety locks.
5. Check a branch pipe of supply of air and an inlet collector on existence of leaks. Check, whether the branch pipe of supply of air and a butterfly valve casing got littered. Clear it if it is necessary.
6. Check injectors, having heard to their work by means of a stethoscope.
7. Check injectors by means of a control bulb.
8. Check resistance of injectors.
9. For more detailed check of system it is necessary to address to experts.