Test condition:
Engine idling.
No faults stored.
Engine temperature above 85 °C.
All electrical loads switched off.
Gear selector set to P/N.
Note:
Used to read and check lambda adaption values.
At the basic setting, the AC compressor is switched off and the carbon canister valve is closed.
Method:
Choose the lambda adaption function.
Read off the value columns. Prescribed value injection time 2.0-5.0 ms; additive lambda adaption –10 % to 10 %; multiplicative lambda adaption –8 % to 8 %; status of tank venting: adaption active (instantaneous lambda adaption) TVV not active (condition for lambda adaption not met).
On completion of basic setting, the carbon canister valve is activated automatically.