Function test
WARNING: This page is about a different car, the 2006 Audi TT, 2005 Audi TT, and 2004 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- If the accelerator pedal is depressed during the test, the test will be aborted.
- Connect the scan tool.
- Start the engine and run at idle for at least 15 minutes.
- Select "Mode 8: Tank Leak Test".
- Select " Tank Leak Test".
- Check the specified value of the tank leak test at idle.
- The following may be displayed on the scan tool screen:
| Tank leak test | Specified value | |||||
|---|---|---|---|---|---|---|
|
Test OK | |||||
- Switch the ignition off.
If the specified result is obtained:
System OK.
If the specified result is not obtained:
- Repeat the tank leak test, switch the ignition off and start the engine again and let run for 15 minutes at idle.
- Switch the ignition off.
If the specified result is again not obtained:
- A leak may be present. Refer to → Evaporative Emission (EVAP) System, Leak Checking .
End of diagnosis.