Audi Workshop Service and Repair Manuals > A3 Mk1 > Power unit | Motronic injection and ignition system (4-cylinder turbo) | Mixture preparation system, electronic inj.,Gas | Servicing Motronic injection system | Checking idling speed | Perform the following checks marked with a dot if the idling speed is too high or too low and there are no faults stored in the

Perform the following checks marked with a dot if the idling speed is too high or too low and there are no faults stored in the fault memory:

l	Check for air leaks in the intake system → Chapter.

l	Check the throttle valve module → Chapter.

l	Activated charcoal filter system solenoid valve permanently open; checking → Chapter.

l	Perform adaption of throttle valve module → Chapter.