A8L Quattro Sedan W12-6.0L (BSB) (2005)
/Page-2127003.png)
-
In selection - 1 -, click on the function " 03 - output Diagnostic Test Mode (DTM)".
-
Press -> button repeatedly until Exhaust Flap Valve 2 (N322) is activated.
‹› The actuation rod of the left exhaust flap must move itself on and off.
-
End function "03 - output Diagnostic Test Mode (DTM)" by pressing <- button.
-
Select "06 - End Output".
-
Switch off ignition.
If actuator rod does not move:
-
Check exhaust flap vacuum reservoir => [ Exhaust Flap Vacuum Diaphragm, Checking ] See: Exhaust Pressure Regulator Vacuum
Solenoid/Testing and Inspection.
-
Check vacuum line from vacuum reservoir to the corresponding exhaust flap valve at rear on vehicle floor.
-
Check Exhaust Flap Valve 1 (N321) and (N322) using "Guided Fault Finding".
