Function test
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. 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 "Diagnostic Mode 08 - 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 → EVAP System, Detecting Leaks .
End of diagnosis.