Toyota Camry

1996-2001 of release

Repair and car operation

Kamri's Toyota
+ 1. Maintenance instruction
+ 1.2. Information before car driving
+ 1.3. Independent maintenance
+ 1.4. Technical characteristics
+ 1.5. Some councils upon car purchase
+ 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 a soaking-up collector
      7.2.7. Sensor of a mass consumption of air
      7.2.8. The sensor of temperature of soaked-up air (IAT sensor)
      7.2.9. The 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 the content of oxygen in the fulfilled gases
      7.2.14. Detonation sensor
      7.2.15. Sensor of speed of the car
      7.2.16. Perepuskna air valve of idling (IAC valve)
      7.2.17. System of a choice of the channel absorptions (ACIS system)
      7.2.18. System of ventilation of a case
      7.2.19. Retsirkulyatsiya system
      7.2.20. Catching system паров 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

7.2.13. The sensor of the content of oxygen in the fulfilled gases


Oxygen sensor

1. I will corrode seats
2. Socket of the secondary sensor
3. Cover
4. Collar
5. First sensor

The sensor of oxygen is intended for signal formation on the basis of which the computer defines the content of oxygen in exhaust gases and supports stekhiometrichesky composition of gas mixture (14,7 parts of air to 1 part of gasoline) at the expense of change of duration of injection of fuel. The signal of low level (0,1 In) from the sensor corresponds to the grown poor mix, and a signal of high level (0,9 In) – the enriched mix.

On considered cars 2 sensors of oxygen – on an entrance and an exit of catalytic converter are established. If the temperature of the sensor is lower 340 ° With, the signal from the sensor is absent and before engine warming up system the sensor – the computer works in a mode of the opened cycle. If after engine warming up the signal does not exceed 0,45 In at turns higher than 1500 rpm, the mode of the opened cycle remains, and for processing instead of a signal from the sensor data by default, brought in memory of the computer are used.

At check of the sensor it is forbidden to disconnect from it the flexible conductor, to overwind conducting, and also to subject the sensor to sharp mechanical influences. It is forbidden to apply solvents to sensor cleaning.


1. Insert needle щупы the voltmeter into the sensor socket, on conclusions 3 (the positive plug of the voltmeter) and 4 (the negative plug) – in the 4-cylinder engine. Lift a car front. For access to the socket of the second sensor it is required to remove a forward seat.
2. Start the engine and watch voltmeter indications in process of engine warming up. On the cold engine tension should be 0,1–0,2 V.Na the heated-up engine tension should start to fluctuate within 0,1–0,9 In (the mode of the closed cycle joins). If the mode of the closed cycle does not join, or joins with big delay, the sensor replace.
3. Check serviceability of a heater of the sensor, having measured resistance between conclusions of NT and In + the socket which should be 11–16 Ohm.
4. Check existence of tension of the battery between a conclusion In + from the socket from the computer and weight (ignition should be included).


1. Start the engine for 1–2 minutes. Disconnect the battery from weight and lift the car.
2. Carefully disconnect from the sensor the socket and turn out the sensor a cap natural cut.