The temperature of the oxygen concentration sensor must be at least 300°C for normal operation. Therefore, for quick warm-up after starting the engine, a heating element is built into the oxygen concentration sensor.
By monitoring the output voltage of the oxygen concentration sensor, the controller determines which command to adjust the composition of the working mixture to apply to the injectors. If the mixture is lean (low potential difference at the output of the oxygen concentration sensor), then the controller gives a command to enrich the mixture; if the mixture is rich (high potential difference) - to lean the mixture.
To replace the control oxygen sensor on a vehicle, you will need a key «at 22».
1. Disconnect the wire from the terminal «minus» battery.
2. Disconnect the oxygen concentration sensor connector from the wiring harness by depressing the plastic latch.
3. Disconnect the wire harness connector retainer from the thermal screen.
4. Turn out the gauge of concentration of oxygen from the catalyst and remove the gauge of concentration of oxygen.
5. Establish on the car the operating gauge of concentration of oxygen in an order, the return to removal.