Work step 12: Diagnostic of Secondary Air Injection (AIR) system
WARNING: This page is about a different car, the 2004 Audi A6, 2003 Audi A6, 2002 Audi A6, 2001 Audi A6, and 2000 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
- Increase engine speed to approximately: 1800 - 2400/RPM
Indicated on display
Fig 1: VAG 1551 Scan Tool Display - Work Step 12, Diagnostic Of Secondary Air Injection (AIR) System (1 Of 2)
- Press buttons -0-, -7-, and -7- to select "display group number 077" and confirm input with -Q- button.
Indicated on display
Fig 2: VAG 1551 Scan Tool Display - Work Step 12, Diagnostic Of Secondary Air Injection (AIR) System (2 Of 2)
- 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 | xxx/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 button -0-, -7-, and -8- to select "display group number 078" and confirm input with -Q- button.
DISPLAY GROUP 077: DIAGNOSTIC OF SECONDARY AIR INJECTION SYSTEM (BANK 2)
| Display fields | ||||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| Display group 077: Diagnostic of secondary air injection system (Bank 2) | ||||
| Display | xxx/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.