Toyota Camry

1996-2001 of release

Repair and operation of the car


Toyota Camry
+ 1. Maintenance instruction
+ 1.2. Information before driving of the car
+ 1.3. Independent maintenance
+ 1.4. Technical characteristics
+ 1.5. Several councils upon purchase of the car
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
- 7. Exhaust system
   - 7.2. Systems of decrease in toxicity of exhaust gases
      7.2.2. Technical characteristics
      7.2.3. OBD II system
      7.2.4. OBD computer of II system (Powertrain Control Module)
      7.2.5. Sensor of turn of a butterfly valve
      7.2.6. The sensor of absolute pressure in the soaking-up collector
      7.2.7. Sensor of a mass consumption of air
      7.2.8. The sensor of temperature of the soaked-up air (IAT sensor)
      7.2.9. Sensor of temperature of cooling liquid (ECT sensor)
      7.2.10. Sensor of rotation of the crankshaft
      7.2.11. Sensor of rotation of a cam-shaft
      7.2.12. Contact sensor of pressure of the hydraulic booster
      7.2.13. The sensor of content of oxygen in the fulfilled gases
      7.2.14. Detonation sensor
      7.2.15. Car speed sensor
      7.2.16. Perepuskna air valve of idling (IAC valve)
      7.2.17. System of the choice of the channel of absorption (ACIS system)
      7.2.18. System of ventilation of a case
      7.2.19. System of recirculation
      7.2.20. System of catching of vapors of gasoline
      7.2.21. Converter
      7.2.22. Rub in one – or how to save the catalyst
+ 8. Transmission
+ 9. Running gear
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment


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7.2.8. The sensor of temperature of the soaked-up air (IAT sensor)
GENERAL INFORMATION

The IAT sensor represents the thermoresistor which resistance increases at fall of temperature.

Check
PERFORMANCE ORDER
1. On 4-cylinder engines disconnect the socket which is in the air filter from the sensor, check sensor resistance at various temperatures (See the table of Value of resistance of serviceable sensors of temperature of the soaked-up air and cooling liquid at various temperatures on 4-cylinder engines), blowing in the sensor, for example, the hair dryer. If resistance of the sensor changes with a temperature disproportionately, then it should be replaced.
2. On 6-cylinder engines disconnect the socket from the sensor, check sensor resistance at various temperatures, having attached an ohmmeter to conclusions of the 4 and 5 sensor, and compare with tabular (see the table of Value of resistance of serviceable sensors of temperature of the soaked-up air and cooling liquid at various temperatures on 6-cylinder engines). If resistance of the sensor does not correspond tabular, then it should be replaced.

Values of resistance of serviceable sensors of temperature of the soaked-up air and cooling liquid at various temperatures on 4-cylinder engines

Temperature, °C
Resistance, Ohm
100
125
90
250
80
300
70
400
60
500
50
625
45
750
40
875
35
1000
30
1500
25
2000
20
2500
15
3000
10
3500
4,5
4000
0
4500

Values of resistance of serviceable sensors of temperature of the soaked-up air and cooling liquid at various temperatures on 6-cylinder engines

Contact
Soprtivleniye, Ohm
Temperature, °C
5 – 4
13,6 – 18,4
– 20
5 – 4
2,21 – 2,69
20
5 – 4
0,49 – 0,67
60

Replacement (4-cylinder engines)
Prevention

On 6-cylinder engines the IAT sensor is executed in the uniform module with the air consumption sensor.

PERFORMANCE ORDER
1. Switch off ignition.
2. Disconnect the socket and remove the sensor.