Note: Some vehicles may be equipped with a low oil level sensor. If the oil level in the crankcase has dropped to the mark "MIN" or lower, then after switching on the ignition, the corresponding control lamp in the display unit of the on-board monitoring system should light up. Otherwise, the display unit is faulty (see "The display unit of the onboard control system - removal and installation"), low oil level sensor, or their circuit is faulty. It is possible that the terminal in the sensor wire block has oxidized.
To complete the work you will need:
- viewing ditch or overpass;
- multimeter.
Execution sequence
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. Disconnect the wire tip from the oil level sensor. With the ignition on, use a voltmeter to measure the voltage between the terminal of the connecting block and "weight". The voltage should be about 12 V. If the voltage is not supplied to the block, then there may be a bad contact or a wire break in the sensor circuit or the display unit is faulty.
3. socket wrench by 10 mm Loosen the sensor mounting bolt.
4. We remove the sensor from the hole in the engine block.
Examination
1. Connect a multimeter (in ohmmeter mode) to the housing and the output of the sensor.
2. By moving the float from one extreme position to another, we measure the electrical resistance of the sensor. In the extreme upper position, the resistance should be infinitely large...
... and in others - close to zero.
Recommendation: The oxidized lead in the block should be cleaned with an awl or a thin needle file. Damaged sections of the wire must be repaired. Faulty sensor and display unit are replaced (see "The display unit of the onboard control system - removal and installation").
Installation
Install the sensor in the reverse order of removal.