Test condition:
Engine running
No faults stored
No leaks in the exhaust system
All electrical loads switched off
Coolant temperature at least 80 °C
The temperature of the catalytic converter at least 352 °C
Note:
Used to do an age check of the lambda probe before the catalytic converter.
Procedure:
Start the function: Lambda probe before catalytic converter, age check.
Depress brake- and throttle pedal.
The engine speed will raise and the status field will change from "Test OFF" to "Test ON".
Check the dynamic factor field. Target value: at least 0.70.
Maintain raised engine speed until the status field changes from "Test ON" to "B1-S1 OK" / "B1-S1 not OK".
Test may take several minutes.
If the specifications are not attained, interrogate fault memory.
Exit function.