- A) The engine is warmed up to normal operating temperature.
- b) Air filter installed.
- V) All tubes and hoses of the air intake system are connected.
- G) All vacuum lines are connected.
- d) The injection system wiring connectors are connected.
- e) All accessories are off.
- and) The ignition timing is set correctly.
- h) Gear lever in neutral position.
Note: The test is only used to ensure that the mixture is adjusted correctly at idle (according to the content of CO and CH in the exhaust gas).
2. Check the operation of the oxygen sensor.
- A) Use a jumper to bridge the leads "TE1" And "E1" diagnostic socket.
- b) Connect positive (+) output voltmeter probe "VF1" diagnostic connector, and negative (-) output probe "E1".
- V) Set the engine speed to 2500 rpm and hold it for 120 seconds.
- G) The voltmeter needle should then fluctuate between 0 and 5 V. Minimum voltmeter needle swing: 8 times every 10 seconds. If the oscillation is less than expected, check the air intake or injection system.
- d) Remove the jumper from the diagnostic socket.
3. Start the engine.
4. Increase the engine speed to 2500 rpm and maintain this speed for approximately 120 seconds.
5. Insert the gas analyzer probe into the exhaust pipe to a depth of 40 cm.
6. Check the CO/CH concentration at idle.
CO concentration at idle - 0-0.5%