| 1. Start up the engine and warm up it to working temperature. |
| 2. Leave the engine to work at frequency of rotation of idling. |
| 3. Connect the voltmeter between contacts 1 (LG/R wire) and weight. |
| 4. Several times increase and reduce frequency of rotation of the engine. |
|
5. Check that tension changes in limits 0–1,0В. |
Prevention
Tension on the back sensor of oxygen changes not so quickly as on the forward sensor.
|
6. Otherwise check:
– system of onboard diagnostics;
– system;
– vacuum in an inlet collector;
– pressure of fuel. |
| 7. If all systems as it should be, replace the oxygen sensor. |