Note:
Used to test the lambda probe before the catalytic converter.
Test prerequisites:
Engine running.
No faults stored.
Coolant temperature at least 80 °C.
The temperature of the catalytic converter at least 600 °C.
No leaks in the exhaust system.
All electrical loads should be switched off.
Procedure:
Choose the function: 'Lambda probe before catalysator, age check'.
Depress brakepedal and then accelerator pedal.
The engine speed will raise and the diagnostic status changes from "Test OFF" to "Test ON".
The procedure may take a few minutes.
Maintain engine speed until the diagnostic status changes from "Test ON" to "Syst. OK! / Syst. not OK!".
If the specifications are not attained, interrogate fault memory.
Exit the function.