Work step 12: Diagnosis of Secondary Air Injection (AIR) system
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 Audi S8, 2003 Audi A8, 2002 Audi S8, 2002 Audi A8, and 2001 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.
- Increase engine speed to approximately: 1800 to 2400/RPM
Indicated on display
- Press buttons -0-, -7- and -7- to select display group number "077" and confirm input with -Q- button.
Indicated on display
- Check specified value in display field 4.
NOTE:
The test duration for the secondary air injection system takes approximately 60 seconds.
DISPLAY GROUP 077: DIAGNOSTIC OF SECONDARY AIR INJECTION SYSTEM (BANK 1)
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 077: Diagnostic of secondary air injection system (Bank 1) | ||||
| Display | xxxx/RPM | xx.x g/s | xx % | Test ON |
| Indicated | Engine speed (RPM) | Air mass | Deviation percentage of secondary air specified value | Diagnostic condition |
| Work range | 0 to 6800/RPM | Test OFF Test ON System OK System not OK Abort |
||
| Value | 1800 to 2400/RPM | greater than 40 g/s less than 70 g/s |
-70% to 30% | System OK |
| Note | If "System not OK": Check DTC memory, see DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . | |||
If the specified value of "System OK" is reached:
- Press -C- button.
- Press buttons -0-, -7- and -8- to select display group number "078" and confirm input with -Q- button.
DISPLAY GROUP 078: DIAGNOSTIC OF SECONDARY AIR INJECTION SYSTEM (BANK 2)
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 078: Diagnostic of secondary air injection system (Bank 2) | ||||
| Display | xxxx/RPM | xx.x g/s | xx % | Test ON |
| Indicated | Engine speed (RPM) | Air mass | Deviation percentage of secondary air specified value | Diagnostic condition |
| Work range | 0 to 6800/RPM | Test OFF Test ON System OK System not OK Abort |
||
| Value | 1800 to 2400/RPM | greater than 40 g/s less than 70 g/s |
-70% to 30% | System OK |
| Note | If "System not OK": Check DTC memory, see DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . | |||
If the specified value of "System OK" is reached:
- Press -->button.