Test condition:
Engine running.
No faults stored.
All electrical loads switched off.
Coolant temperature at least 80 °C.
Induction air temperature below 60 °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 period. Target value: max 2.2 s.
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.