Test condition:
Engine running.
No faults stored.
Engine temperature above 80 °C.
Battery voltage above 11.5 V.
No leaks in the exhaust system.
All electrical loads switched off.
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.
Press and hold down the brake pedal.
The engine control unit now increases the engine speed to about 1100-1400 rpm.
The temperature of the catalytic converter must be above 400 °C.
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-Se not OK!”.