Test condition:
Engine running
No faults stored
No leaks in the exhaust system
All electrical loads switched off
Coolant temperature at least 80 °C
Note:
Used to test the lambda probe after the catalytic converter.
The basic setting procedure may take a few minutes.
Procedure:
Choose the function: Lambda probe after catalytic converter, readiness test.
For vehicles to 04.01:
Raise engine speed to 1800-2200 rpm.
For vehicles from 05.01:
Depress brake- and throttle pedal.
The engine speed will raise by the engine control module to 1800-2200 rpm.
The diagnostic status field will change from "Test OFF" to "Test ON".
Read off the lambda probe after the catalytic converter. Prescribed value 0.00-1.00 V.
The diagnostic status field must change from "Test ON" to "B1-S2 OK" / "B1-S2 not OK".