Test condition:
Engine running.
No faults stored.
Coolant temperature at least 80 °C.
Note:
Used to testing knock sensors.
The test will be done when driving.
Procedure:
Choose the function: Knock control.
The status field change from "Test OFF" to "Test ON".
The Diagnostic status field changes from "Test ON" to "Syst. OK" / "Syst. not OK".
If the specifications are not attained, interrogate fault memory.
Exit function.