Preconditions for the test:
Engine idling.
No faults stored.
Engine temperature above 85 °C.
No leaks in the exhaust system.
All electrical loads switched off.
Gear selector set to P/N.
Note:
Used to see the lambda regulation value.
During basic setting, the AC compressor is switched off and the carbon canister valve is closed.
Procedure:
Choose the function: Lambda regulation, probe before catalytic converter
Read off lambda regulation (bank 1, probe 1). Prescribed value –10 % till 10 % (must vary by at least 2 %).
Read off lambda probe (bank 1, probe 1). Prescribed value 0.13-3.6 V.
On completion of basic setting, the AC compressor and carbon canister valve are activated automatically.