Attention! The sensor is installed in the downpipe of the exhaust system, which heats up to a high temperature when the engine is running. To avoid burns, the oxygen concentration sensor is checked and removed after the engine has cooled to a safe temperature.
You will need a voltmeter to do the job.
Execution sequence
1. We install the car on a viewing hole or overpass (see "Vehicle preparation for maintenance and repair").
2. In the engine compartment, having pressed the plastic retainer, disconnect the block of the wiring harness from the block of the oxygen concentration sensor.
3. Connect "negative" voltmeter probe to "mass" engine.
4. Turning on the ignition, check the supply voltage of the heating element at the output "IN" (pin numbering is printed on the wiring harness block).
The voltage at the output must be at least 12 V. If the voltage is not supplied to the block or it is less than 12 V, the power circuit is faulty or the computer is faulty.
5. Connecting "negative" voltmeter lead to terminal "WITH", measure the voltage between the terminals "A" And "WITH". The voltage at the terminals should be 0.45 V. If the voltage is not supplied to the block or it differs by more than 0.02 V, the power circuit is faulty or the computer is faulty.
6. Turn off the ignition.
Removing
1. Disconnect the sensor wire holder from the bracket on the clutch housing.
2. Key at 22 mm We turn the sensor out of the hole in the exhaust 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.