1999 AUDI A4 engine

01-106


Display fields

1 2 3 4
Display group 046: Diagnostic of catalytic converter (bank 1)
Display xxxx/min
xxx C
x.xx
---
Indicated Engine
speed
(RPM) Exhaust temperature Measurement
Catalytic
converter -
conversion Diagnostic condition
Functional
range 0 to 8 Test OFF
Test ON
Cat B1 OK
Cat B1 not OK
Specified
value 2600 RPM
550 to 700 C
Larger than 1.0 Cat B1 OK
Note

As long as the exhaust temperature
is not within the specified range, the
test will not be initiated. If necessary,
increase or decrease RPM
If "Cat B1 not OK" is displayed:
Check DTC memory Page 01
-
12
. If no DTCs are stored,
replace catalytic converter.
If specified value "Cat B1 OK" is obtained:

- Perform next work step.
Pa
ge 35 of 43 Readiness code11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.7

01-107

Work step 11: Diagnostic of tank ventilation
valve

- Remove the VAG1788/10 RPM adjuster and
leave engine running at idle.

Test requirement:

Engine running at idle:

Display on VAS5051:
-
Click on - button

Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "070" in button field -2- for "display group number 070"
and press Q button to confirm input.
Pa
ge 36 of 43 Readiness code11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.FU07.01.7

01-110

Work step 12: Diagnostic of Secondary Air
Injection (AIR) system

Test requirement:

Engine running at idle:

Display on VAS5051:
-
Click on - button

Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "077" in button field -2- for "display group number 077"
and press Q button to confirm input.
Pa
ge 40 of 43 Readiness code11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.7

01-112


Display fields

1 2 3 4
Display group 077: Secondary Air Injection (AIR) system diagnostic (Bank 1)
Display xxxx/min xx.x
g/s xx %
---
Indicated Engine speed
(RPM) Air
mass Relative air mass bank 1,
Secondary Air Injection (AIR)
system Diagnostic condition
Functional
range
Test OFF
Test ON
System OK
System not OK
Aborted
Specified
value FWD: 740 to
860 RPM
AWD: 760 to
880 RPM 2 to 5
g/s more than -20 % System OK
Note


If "System not OK" is displayed:
Check DTC memory Page 01
-12

If specified value "Syst. OK" is obtained:

Pa
ge 42 of 43 Readiness code11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.7