This function is used to see the lambda adaptation value by alternately letting the coal canister valve be "closed" or "active" (active approx. 220-900 seconds open and closed approx. 70 seconds). Lambda adaptation values for bank 1 and bank 2 are shown.
Test conditions:
Engine idling.
No faults in the system.
Engine temperature above 80 °C.
No leaks in the exhaust system.
Gear in position P/N.
Procedure:
Select the function: "Lambda adaptation", press "OK".
Read off the value columns. Required results: additive lambda adaptation (cylinder bank 1 and 2) –10% to 10% and multiplicative lambda adaptation (cylinder bank 1 and 2) –10% to 10%.
Switch between coal canister "closed" or "active" using the buttons in the function.
When the function finishes, the coal canister valve is activated automatically.
The function is done.
If the function fails, check the test conditions and repair any faults.