Test condition:
Engine running
No faults stored
No leaks in the exhaust system
All electrical loads switched off
Coolant temperature at least 85 °C
The temperature of the catalytic converter at least 350 °C (250°C V6).
Note:
Used to test the lambda probe after the catalytic converter.
Procedure:
Start the function.
Depress brake- and throttle pedal.
The engine speed will raise by the engine control module to 1800-2300 rpm.
The status field will change from "Test off" to "Test on".
Test may take several minutes.
Maintain the engine speed until the status field changes from "Test on" to "B1(2)-S1 OK/B1(2)-S1 not OK".
If the specifications are not attained, interrogate fault memory.
Exit function.