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 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.