Operation 12: Diagnosis of secondary air injection system
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.
Test conditions
- Engine running at idling speed
Display on VAS5051:
1 - Enter display group
- Enter "199" for "display group number 199" in zone -2- and confirm entry by pressing -Q- button.
- Depress gas pedal completely (swiftly) two times and then release it (brief acceleration of at least 4000 RPM).
Display on VAS5051:
- Activate basic setting by pressing -A- button.
NOTE:
During the diagnosis of the secondary air system the secondary air pump runs several seconds.
- Check indication in display field -4-.
| Display zones | ||||
| 1 | 2 | 3 | 4 | |
| Display group 199: Diagnosis of secondary air injection system (Bank 1 and Bank 2) | ||||
| Display | xxxx RPM | xx% | % | --- |
| Display | Engine speed | Relative air mass Bank 1, secondary air system | Relative air mass Bank 2, secondary air system | Diagnosis status |
| Range | Test OFF Test ON Syst. OK Syst. NOK Cancel |
|||
| Specif. value | 700 to 800 RPM | Syst. OK | ||
| Note: | If "Syst. NOK" is displayed: Check DTC memory. Refer to Diagnostic Trouble Code (DTC) memory, checking | |||
If specification "Syst. OK" is obtained:
- Press ← button.
- Perform next operation.