engine AUDI A4 1998 B5 / 1.G APB Engine Motronic Syst
[x] Cancel search | Manufacturer: AUDI, Model Year: 1998, Model line: A4, Model: AUDI A4 1998 B5 / 1.GPages: 166, PDF Size: 0.53 MB
Page 150 of 166
01-123
Work step 9: Diagnosis of operational
readiness of oxygen sensors behind TWC
Test requirements
Engine at idle
System in Basic Settin
g
Q
Input display group number XXX
Indicated on Display
- Press buttons -0-, -3- and -6- to select "display group number 036" and
press -Q- button to confirm input.
System in Basic Setting 36
1
2
3
4
Indicated on display
- Check specified values in display fields 2 and 4.
Pa
ge 150 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
Page 153 of 166
01-125
Work step 10: Diagnosis of oxygen sensor
control system
Test requirements
Engine at idle
System in Basic Settin
g
Q
Input display group number XXX
Indicated on display
- Press buttons -0-, -3- and -7- to select "display group numbers 037"
and confirm with -Q- button.
System in Basic Setting 37
1
2
3
4
Indicated on display
- Check specified value in display field 4.
Pa
ge 153 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
Page 156 of 166
01-128
Work step 11: Diagnosis of oxygen sensor
aging behind catalytic converter
Test requirements
Engine running at 1900 - 2200 RPM
System in Basic Settin
g
Q
Input display group number XXX
Indicated on display
- Press buttons -0-, -4- and -3- to select "display group number 043" and
confirm input with -Q- button.
System in Basic Setting 43
1
2
3
4
Indicated on display
- Check specified value in display field 4.
Pa
ge 156 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
Page 157 of 166
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
Page 159 of 166
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
Page 160 of 166
01-131
Work step 12: Diagnosis of catalytic
converter
Test requirements
Engine running at 1900 - 2200 RPM
System in Basic Settin
g
Q
Input display group number XXX
Indicated on display
- Press buttons -0-, -4- and -6- to select "display group number 046" and
confirm input with -Q- button.
System in Basic Setting 46
1
2
3
4
Indicated on display
Note:
The test duration for catalytic converter diagnosis takes approx.: 60
seconds. - Check specified value in display field 4.
Pa
ge 160 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
Page 161 of 166
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
Page 163 of 166
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
Page 164 of 166
01-134
Work step 13: Diagnosis of Secondary Air
Injection (AIR) system (only on vehicles with
automatic transmission), on vehicles with
manual transmission continue with work step
14 Page 01
-136
Note:
The secondary air pump runs for a few seconds
during the secondary air injection system
diagnosis.
Engine at idle sped
System in Basic Setting
Q
Input displa
y group number XXX
Indicated on display
- Press buttons -0-, -7- and -7- to select "display group number 077" and
confirm input with -Q- button.
System in Basic Setting 77
1
2
3
4
Indicated on display
Note:
The test duration for the secondary air injection system takes
approximately 60 seconds. - Check specified value in display field 4.
Pa
ge 164 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
Page 165 of 166
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