Test condition:
Engine idling.
No faults stored.
Engine temperature above 80°C.
Intake air temperature below 60 °C.
All electrical loads switched off.
Note:
Used to testing knock sensors.
Procedure:
Choose the function: Knock control.
Press the throttle pedal several times to at least 2500 rpm.
The diagnostic status field changes between "Test OFF" and "Test ON" and after that "Syst. OK! / Syst. not OK!".
If the specifications are not attained, interrogate fault memory.
Exit function.