Toyota Camry

1992-1997 of release

Repair and car operation



Kamri's Toyota
+ General data
+ 1. Maintenance
+ 2. Engine
+ 3. Six-cylinder V6 engines
+ 4. Major maintenance of engines
+ 5. Cooling and heating
+ 6. Fuel system
+ 7. Ignition system
- 8. Toxicity fall
   8.2. General information
   8.3. System of electronic control (TCCS)
   8.4. Self-diagnostics system
   - 8.5. Sensors
      8.5.2. Oxygen sensor
      8.5.3. Sensor of provision of a butterfly valve
      8.5.4. Measuring instrument of a stream of air (only V6 engines 3VZ-FE)
      8.5.5. MAF sensor of measurement of weight of a stream of air (V6 engine 1MZ-FE)
      8.5.6. Sensor of absolute pressure (four-cylinder engines)
      8.5.7. Sensor of temperature of EGR
      8.5.8. Sensor of speed of the car
      8.5.9. The detonation sensor (only with V6 engines)
      8.5.10. Sensor of provision of a camshaft (V6 engine 1MZ-FE)
      8.5.11. Sensor of an angle of rotation of a cranked shaft (only V6 engines 1MZ-FE)
   + 8.6. Induction system of supply of air in the engine (ACIS)
   8.7. Catching system паров fuels (EVAP)
   + 8.8. System of repeated burning of exhaust gases (EGR)
   8.9. System of ventilation of a case (PCV)
   8.10. Catalyst
   8.11. Codes of malfunctions
+ 9. Transmission
+ 10. Automatic transmission
+ 11. Coupling and power shafts
+ 12. Brake system
+ 13. Suspension bracket
+ 14. Body
+ 15. Electric equipment
вакансии - Москва



8.5.2. Oxygen sensor

GENERAL INFORMATION

Prevention

Use only the strelochny voltmeter as it is necessary to watch arrow fluctuation.


On cars it is established one or two sensors of oxygen. On models with two sensors the main sensor of oxygen is established in front of the catalyst and supervises composition of the exhaust gases which have not been cleared by the catalyst. The additional sensor of oxygen supervises composition of exhaust gases after they passed through the catalyst. In it is dependent сти on the content of oxygen in exhaust gases the sensor induces tension from 0,1 In (the high content of oxygen, a poor mix) to 0,9 In (the low content of the oxygen, a rich mix). On the basis of these data the ESM block changes time of opening of fuel nozzles and changes a fuel ratio in a fuel mix.

The sensor of oxygen does not induce any tension at sensor temperature less than 315 ° Page.

 

For лоступа to sockets of the back sensor of oxygen it is necessary to remove a forward seat.

Check of operability of the sensor of oxygen on six-cylinder engines

 


PERFORMANCE ORDER
 
1. For check of the sensor of oxygen disconnect from the sensor the electric socket and connect an ohmmeter to contacts +В and the sensor NT socket. Resistance of the sensor should be in limits of 11-17 Ohm. On models with four-cylinder engines the sensor of oxygen is connected by one wire. On models with six-cylinder engines with a heater of the sensor of oxygen the sensor is connected by the four-contact socket. Later models with four-cylinder engines have two sensors of oxygen, and models with six-cylinder engines have three sensors of oxygen. The block 1 the sensor 1 and the block 2 the sensor 1 are located in front of the catalyst, and the block 1 and the sensor 2 are located after the catalyst. On models with six-cylinder engines for access to the electric socket of the back sensor of oxygen it is necessary to remove a forward seat.
2. Check a condition of an electric chain of a heater of the sensor of oxygen. At inclusion of ignition owe a prisutstvo вать tension 12 In on socket contacts (See tab. "G engines V6 1992 and 1993", "V6 engines from 1994 g").
3. Check the tension induced by the sensor of oxygen. Connect one wire милливольтметра to the electric socket of the sensor of oxygen, and the second wire connect to weight. Check the tension created by the sensor of oxygen on contacts (See tab. "Four-cylinder engines", "Six-cylinder engines 1992 and 1993 of g", "Six-cylinder engines from 1994 g").
4. The size of the signal induced by the sensor of oxygen on the cold engine makes from 0,1 to 0,2 In, and after warming up of the engine hesitates from 0,1 to 0,9 Century.
5. On models 1992 and 1993г. warm up the oxygen sensor to working temperature and connect the strelochny voltmeter with contacts of VF1 and Е1 the control socket.
6. On six-cylinder engines connect the strelochny voltmeter to contacts of VF1 and Е1 and to contacts of VF2 and Е1 for check of operability of the sensor of oxygen (See fig. Check of operability of the sensor of oxygen on six-cylinder engines).
7. Start the engine and increase its turns to 2500 rpm for 2 minutes and then close an additional wire contacts of TE1 and Е1 the control socket. Check that the arrow of the voltmeter fluctuates 8 times in 10 seconds.

8. For replacement of the sensor of oxygen remove a weight wire, lift the car, disconnect from the sensor the socket and unscrew the oxygen sensor.


G engines V6 1992 and 1993

the additional
black/orange wire (+)
oxygen sensor
brown wire (-)
main No. 1
it is not used
main No. 2
it is not used

V6 engines from 1994 g

block 1 sensor 1
black/orange wire (+)
brown wire (-)
block 2 sensor 1
black/orange wire (+)
brown wire (-)
block 1 sensor 2
black/orange wire (+)
brown wire (-)

Four-cylinder engines

main sensor of oxygen
white wire
additional sensor of oxygen
red/dark blue wire

Six-cylinder engines 1992 and 1993 of g

main No. 1
white wire
main No. 2
red/dark blue wire
additional sensor of oxygen
white wire

Six-cylinder engines from 1994 g

block 1 sensor 1
white wire
block 2 sensor 1
red/dark blue wire
block 1 sensor 2
black wire