Toyota Land Cruiser

FJ60, FJ62 and FJ80 1980-1997 of release

Repair and operation of the car

Toyota Land Cruiser
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling systems, heating
- 5. Fuel and exhaust systems
   + 5.1. Carburetor engines
   - 5.2. Engines with fuel injection
      5.2.1. Technical characteristics
      5.2.2. Decompression of fuel system
      + 5.2.3. Fuel pump and pressure of fuel
      5.2.4. Fuel pipes and joints
      5.2.5. Fuel pump
      5.2.6. Fuel level sensor
      5.2.7. Air filter
      5.2.8. Cable of the drive of a butterfly valve
      - 5.2.9. System of electronic injection of fuel (EFI system)
         5.2.9.1. Check of system of electronic injection of fuel
         + 5.2.9.2. Units of system of electronic injection of fuel
+ 6. System of decrease in toxicity
+ 7. Transmission
+ 8. Brake system
+ 9. Suspension brackets and steering
+ 10. Body
+ 11. Electric equipment
+ 12. Electrical circuitries

5.2.9. System of electronic injection of fuel (EFI system)

GENERAL INFORMATION

System of electronic injection of fuel of cars of 1988-92.

1. Fuel pressure regulator
2. Vacuum valve of the regulator
3. Vacuum valve of recirculation
4. Modulation valve of recirculation
5. Main valve of recirculation
6. Sensor of temperature of gases of system of recirculation
7. Starting nozzle
8. Ignition distributor
9. Coil
10. Electronic block of ignition
11. Starter
12. Conditioner
13. Battery
14. Control lamp of diagnostics of the engine
15. The blocking switch
16. Sensor of inclusion of a forward leading axis

17. Speed sensor
18. Conclusion of the diagnostic TE1 socket
19. To the ignition lock
20. Oxygen sensor
21. Air pump
22. Air temperature sensor
23. Stream measuring instrument
24. Tank
25. Fuel filter
26. Sensor of an angle of rotation of the gate
27. Suppressor of pulsations
28. Valve of the regulator of turns of idling
29. Nozzle
30. Relay of a starting nozzle
31. Contact sensor of temperature of liquid
32. Analog sensor of temperature of liquid

System of electronic injection of fuel of cars since 1993.

1. Vacuum valve of pulse system of air supply
2. Modulation valve of recirculation
3. Vacuum valve of recirculation
4. Main valve of recirculation
5. Pneumoshock-absorber
6. Vacuum valve of the regulator of pressure
7. Fuel filter
8. Sensor of an angle of rotation of the gate
9. Stream measuring instrument
10. The air temperature sensor in the soaking-up collector
11. Air filter
12. A tank with an absorber
13. Vacuum distributor
14. The vacuum valve for a control system
15. Ignition distributor
16. Muffler
17. Tank
18. Resistor of the fuel pump

19. Relay of turning on of the fuel pump
20. Oxygen sensor
21. Converter
22. Ignition block
23. The sensor of temperature of gases in an inlet collector
24. The blocking switch
25. Braking signal switch
26. Battery
27. DLC1 switch
28. Starter
29. Conditioner
30. Speed sensor
31. Main relay of injection
32. Relay of a chain of the fuel pump
33. To the ignition lock
34. Nozzle
35. Denatonation sensor
36. Thermal vacuum distributive valve

Cars are equipped with system of electronic injection of fuel (EFI system) which three subsystems – a fuel supply system, system of an intake of air and an electronic control system enter.

Fuel system

The fuel pump located in a tank provides fuel supply under constant pressure in the distributor from which fuel is evenly distributed on nozzles. From the distributor fuel moves to inlet canals of cylinders through nozzles. The amount of injectable fuel is controlled with high precision an electronic control unit (ESM-block). The regulator of pressure of fuel provides change of pressure of fuel according to depression on the soaking-up collector. The fuel filter is mounted between the fuel pump and the distributor of fuel and intended for purification of gasoline and protection of units of system of injection against failure.

System of an intake of air

The system of an intake of air consists of the air filter, the case of a butterfly valve and the channel connecting these two units. Air temperature sensor (IAT. the sensor) traces temperature of the selected air. The signal from the sensor arrives on an electronic control unit which provides a dosage of injectable fuel according to air temperature. The driver operates a butterfly valve. In process of opening of a butterfly valve the speed of the arriving air increases that leads to decrease in its temperature. The sensor registers change of air temperature and gives a signal on the ESM block which in turn increases a dose of injectable fuel.

Electronic control system

Management of electronic injection of fuel and other systems is provided with the processor ESM-block. The microprocessor is a part of the ESM-block. On the block signals from a number of sensors which trace such parameters as air temperature on an entrance to cylinders, an angle of rotation of a butterfly valve, temperature of cooling liquid, engine speed, speed of the movement of the car and content of oxygen in exhaust gases arrive. On the basis of these data the control unit determines the fuel injection duration with which maintenance of an optimum ratio of gasoline and air in gas mixture is provided. Some of these sensors and the corresponding relays working from the control unit belong to system of decrease in toxicity and are not a part of system of electronic injection of fuel.