RAV4 PAB4-Toyota Toyota
1. Car operation
2. Maintenance
3. Engines
4. Cooling and conditioning systems
5. Fuel system and system of production of the fulfilled gases
6. Ignition system
7. The monitoring system and decrease in toxicity of the fulfilled gases
   General information
   Technical characteristics
   System of onboard Diagnostics (OBD)
   Information sensors and executive stroystvo
   Codes of malfunctions of OBD-II system
   Control unit engine (PCM)
   Sensors and valves of system of injection of fuel (EFI)
      Replacement of the sensor of provision of a butterfly valve (TPS)
      Replacement of the sensor of absolute pressure of air in an inlet collector on models since 2001
      Replacement of the sensor of a measuring instrument of a consumption of air (MAF) on models since 2001
      Replacement of the sensor of the air temperature arriving in the engine (IAT) on models till 2001
      Replacement of the sensor of temperature of cooling liquid (ECT)
      Replacement of the sensor of an angle of rotation of a cranked shaft (CKP)
      Replacement of the sensor of provision of a camshaft (CMP) on models since 1998
      Replacement of sensors of oxygen (O2S) and toplivovozdushny mix (A/F Sensor)
      Replacement of sensors of a detonation
      Replacement of the sensor of speed of the car (VSS)
      Replacement of the valve of a control system with frequency of rotation of idling (IAC)
   System of compulsory ventilation of Carter (PCV)
   System of a retsirkulyatsiya of the fulfilled gases (EGR) on models since 2001
   Catching system паров fuels (EVAP)
   Catalytic converter
8. Coupling
9. Transmission
10. Driveshaft and shaft of a drive of driving wheels
11. Brake system
12. Suspension bracket
13. Steering and running gear
14. Body
15. Electric equipment
Electric equipment schemes




Toyota RAV4>> The monitoring system and decrease in toxicity of the fulfilled gases>> Sensors and valves of system of injection of fuel (EFI)>> Replacement of the sensor of a measuring instrument of a consumption of air (MAF) on models since 2001
The sensor of a measuring instrument of a consumption of air is located on an air inlet branch pipe. The stream of air arrives in the engine through a measuring instrument with the warm wire element forming a part of the bridge scheme. The current passing through this wire element, maintains its constant temperature at constant level, which above, than temperature of air arriving in the engine. The mass of air is determined by a current. The signal of tension is processed in the control unit by the engine in parallel with parameter of frequency of rotation of a cranked shaft. The sensor of temperature is established in a measuring instrument of a consumption of air in order that the target signal did not depend on temperature of air arriving in the engine. On the basis of information from the sensor, the control unit the engine calculates width of the impulse submitted on nozzles therefore the amount of fuel of the engine submitted to cylinders changes.
Replacement of the sensor of a measuring instrument of a consumption of air (MAF) on models since 2001 make as follows:
– switch off ignition and disconnect a "weight" wire from the storage battery;
– disconnect from the sensor the electric socket;

Fig. 7.9. Arrangement of screws of fastening sensor of a measuring instrument of a consumption of air


– turn out 2 screws and remove the sensor of a measuring instrument of a consumption of air with sealing rings (fig. 7.9) .
Installation carry out to sequences, return to removal. At installation of the sensor use new sealing rings.