Attention! The sensor is installed in the exhaust pipe, which heats up to a high temperature when the engine is running. To avoid burns, check the oxygen concentration sensor and remove it after the engine has cooled down to a safe temperature.
To complete the work you will need a voltmeter.
Sequence of execution
1. Place the vehicle on an inspection pit or overpass (see "Preparing a car for maintenance and repair").
2. In the engine compartment, pressing the plastic retainer, disconnect the wiring harness connector from the oxygen concentration sensor connector.
3. Connect the negative probe of the voltmeter to the engine ground.
4. After turning on the ignition, check the supply voltage of the heating element at terminal "B" (the terminal numbers are marked on the wiring harness block).
The voltage at the terminal must be at least 12 V. If the voltage does not reach the connector or is less than 12 V, the power supply circuit is faulty or the ECU is faulty.
5. Connect the "minus" probe of the voltmeter to terminal "C" and measure the voltage between terminals "A" and "C". The voltage at the terminals should be 0.45 V. If the voltage does not reach the connector or it differs by more than 0.02 V, the power supply circuit or the ECU is faulty.
6. Turn off the ignition.
Removal
1. Disconnect the sensor wire holder from the bracket on the clutch housing.
2. Key at 22 mm we unscrew the sensor from the hole in the intake pipe and take it out.
You can verify that the sensor is faulty by replacing it with a known good one.
Installation
The sensor is installed in the reverse order.