1999 AUDI A4 air condition

01-127


Display fields

1 2 3 4
Display group 038: Oxygen sensor control system (Bank 2)
Display xx.x % x.xxx Volt xxx ms
Test ON
Indicated Load Voltage of oxygen
sensor behind TWC,
bank 2 Correction value
between oxygen
sensors 1 and 2,
bank 2 Diagnostic condition
Work
range 0 - 175 % 0.000 - 1.000 Volt ---
Test OFF
Test ON
Syst. OK
Syst. not OK
Value 13.5 - 25.0
% 0.000 - 1.000 Volt -500ms to 800ms
Syst. OK
Note

If "Syst. not OK" is displayed: Check DTC
memory Page 01
-15
.
If specified value of "System OK" is reached:

- Press -C- button.
Pa
ge 155 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-129


Display fields

1 2 3 4
Display group 043: Oxygen sensor aging oxygen sensor behind TWC (Bank 1)
Display xxxx/RPM
xxx C
x.xxx V
Test ON
Indicated Engine speed
(RPM) Catalyst
temperature Voltage of oxygen
sensor behind TWC
Bank 1 Diagnostic condition
Work range 0 - 6800/RPM
70 - 850 C
0.000 - 1.000 Volt
Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 1900 -
2200/RPM greater than 320
C 0.000 - 1.000 Volt
B1-S2 OK
Note



If "B1-S2 not OK" is displayed: Check DTC
memory Page 01
-15
.
If specified value of "B1-S2 OK" is reached:

- Press -C- button.

Test requirements

Engine running at 1900 - 2200 RPM
Pa
ge 157 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-130


Display fields

1 2 3 4
Display group 044: Oxygen sensor aging oxygen sensor behind TWC (Bank 2)
Display xxxx/RPM
xxx C
x.xxx Volt
Test ON
Indicated Engine speed
(RPM) Catalyst
temperature Voltage of oxygen
sensor behind TWC
Bank 2 Diagnostic condition
Work range 0 - 6800/RPM
70 - 850 C
0.000 - 1.000 Volt Test OFF
Test ON
B2-S2 OK
B2-S2 not OK
Specified
value 1900 -
2200/RPM greater than 320
C 0.000 - 1.000 Volt B2-S2 OK
Note



If "B2-S2 not OK" is displayed: Check DTC
memory Page 01
-15
.
If specified value of "B2-S2 OK" is reached:

- Press -C- button.
Pa
ge 159 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-132


Display fields

1 2 3 4
Display group 046: Diagnostic of catalytic converter (Bank 1)
Display xxxx/RPM
xxx C
x.x s
---
Indicated Engine speed
(RPM) Catalyst
temperature Catalytic
converter
conversion Diagnostic condition
Work
range 0 - 6800/RPM
70 - 850 C
0.0 - 0.99
Test OFF
Test ON
Cat B1 OK
Cat B1 not OK
Specified
value 1900 -
2200/RPM greater than
350 C 0.0 - 0.80
Cat B1 OK
Note



If "Cat B1 not OK" is displayed: Check DTC
memory Page 01
-15
. If no malfunction is stored
replace catalytic converter.
If the specified value "Cat B1 OK" is reached:

- Press -C- button

Engine running at 1900 - 2200 RPM
Pa
ge 161 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-133


Display fields

1 2 3 4
Display group 047: Diagnostic of catalytic converter (Bank 2)
Display xxxx/RPM
xxx C
x.x seconds
---
Indicated Engine speed
(RPM) Catalyst
temperature Catalytic
converter
conversion Diagnostic condition
Work range 0 - 6800/RPM
70 - 850 C 0.0 - 0.99
Test OFF
Test ON
Cat B2 OK
Cat B2 not OK
Specified
value 1900 -
2200/RPM greater than
350 C 0.0 - 0.80
Cat B2 OK
Note



If "Cat B2 not OK" is displayed: Check DTC memory
Page 01
-15
. If no malfunction is stored replace
catalytic converter.
If the specified value "Cat B2 OK" is reached:

- Press -C- button
Pa
ge 163 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-135


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 Relative air mass secondary air
injection system Diagnostic condition
Work
range 0 - 6800/RPM
Test OFF
Test ON
Syst. OK
Syst. not OK
Abort
Value 750 - 850/RPM +10 % to -100 %
Syst. OK
Note



If "Syst. not OK": Check DTC memory
Page 01
-15
.
If the specified value of "Syst. OK" is reached:

- Press -C- button.

- Press buttons -0-, -7- and -8- to select "display
group number 078" and confirm input with -Q-
button.
Pa
ge 165 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-136


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 Relative air mass secondary air
injection system Diagnostic condition
Work
range 0 - 6800/RPM
Test OFF
Test ON
Syst. OK
Syst. not OK
Abort
Value 750 - 850/RPM +10 % to -100 %
Syst. OK
Note



If "Syst. not OK": Check DTC memory
Page 01
-15
.
If the specified value of "Syst. OK" is reached:

-
Press button.
Work step 14: Readiness code, displaying

- Display readiness code again (measure of
control) Page 01
-101
.
Pa
ge 166 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1