check engine AUDI A4 2000 B5 / 1.G ATQ Engine Readiness Code User Guide
[x] Cancel search | Manufacturer: AUDI, Model Year: 2000, Model line: A4, Model: AUDI A4 2000 B5 / 1.GPages: 47, PDF Size: 0.14 MB
Page 30 of 47
01-99
Work step 9: Diagnostic of oxygen sensor
aging behind catalytic converter
Test requirement
Engine continues to run at 2200 RPM.
Basic Settin
g
Q
Input display group number XXX
When indicated on display:
- Press buttons -0-, -4- and -3- to select "display group number 043" and
press -Q- button to confirm input.
System in Basic Setting 43
1
2
3
4
When indicated on display:
- Check specified value in display field 4.
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Page 31 of 47
01-100
Display fields
1 2 3 4
Display group 043: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Voltage of oxygen sensors
behind catalytic converter,
bank 1 Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.100 to 1.000 V Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2200 RPM
above 380 C 0.100 to 1.000 V B1-S2 OK
Notes
If "B1-S2 not OK" is displayed: Check
Diagnostic Trouble Code (DTC) memory
Page 01
-15
If specified value "B1-S1 OK" is obtained:
- Press -C- button. Basic Settin
g
Q
Input displa
y group number XXX
When indicated on display:
-
Press buttons -0-, -4- and -4- to select "display group number 044"
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Page 33 of 47
01-101
If specified value B2-S2 OK" is obtained:
System in Basic Setting 44
1
2
3
4
When indicated on display:
- Check specified value in display field 4.
Display fields
1 2 3 4
Display group 044: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 2)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Voltage of oxygen sensors
behind catalytic converter,
bank 2 Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.100 to 1.000 V Test OFF
Test ON
B2-S2 OK
B2-S2 not OK
Specified
value 2200 RPM
above 380 C 0.100 to 1.000 V B2-S2 OK
Notes
If "B2-S2 not OK" is displayed: Check
Diagnostic Trouble Code (DTC) memory
Page 01
-15
- Press -C- button.
Pa
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Page 34 of 47
01-102
Work step 10: Diagnostic of catalytic
converter
Test requirement
Engine continues to run at 2200 RPM.
Basic Settin
g
Q
Input display group number XXX
When indicated on display:
- Press buttons -0-, -4- and -5- to select "display group number 046" and
press -Q- button to confirm input.
System in Basic Setting 46
1
2
3
4
When indicated on display:
Note:
Catalytic converter diagnostic lasts approx. 60 seconds. - Check specified value in display field 4.
Pa
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Page 35 of 47
01-103
Display fields
1 2 3 4
Display group 046: Diagnostic of catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine
speed
(RPM) Exhaust
temperature Catalytic
converter -
conversion Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.00 to 0.99 Test OFF
Test ON
Cat B1 OK
Cat B1 not OK
Specified
value 2200 RPM
above 420 C 0.00 to 0.52
1)
0.00 to 0.47
2)
Cat B1 OK
Notes
If "Cat B1 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15
. If no DTCs
are stored, replace catalytic converter.
1) Manual transmission 2) Automatic transmission
Pa
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Page 37 of 47
01-105
Display fields
1 2 3 4
Display group 047: Diagnostic of catalytic converter (bank 2)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine
speed
(RPM) Exhaust
temperature Catalytic
converter -
conversion Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.00 to 0.99 Test OFF
Test ON
Cat B2 OK
Cat B2 not OK
Specified
value 2200 RPM
above 420 C 0.00 to 0.52
1)
0.00 to 0.47
2)
Cat B2 OK
Notes
If "Cat B2 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15
. If no DTCs
are stored, replace catalytic converter.
1) Manual transmission 2) Automatic transmission
Pa
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Page 39 of 47
01-106
Work step 11: Diagnostic of tank ventilation
valve
- Remove the VAG1788/10 RPM adjuster and
leave engine running at idle. Basic Settin
g
Q
Input displa
y group number XXX
When indicated on display:
- Press buttons -0-, -7- and -0- to select "display group number 070" and
press -Q- button to confirm input.
System in Basic Setting 70
1
2
3
4
When indicated on display:
Note:
If test is not initiated or if indication switches from "Test ON" to "Test
OFF", depress accelerator pedal briefly, test will be repeated. - Check specified value in display field 4.
Pa
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Page 44 of 47
01-110
Work step 13: Diagnostic of Secondary Air
Injection (AIR) system
Test requirement
Engine running at idle:
Note:
During diagnostic of the Secondary Air Injection
(AIR) system, the Secondary Air Injection (AIR)
pump will run for several seconds.
Basic Setting
Q
Input displa
y group number XXX
When indicated on display:
- Press buttons -0-, -7- and -7- to select "display group number 077" and
press -Q- button to confirm input.
System in Basic Setting 77
1
2
3
4
When indicated on display:
Note:
Secondary Air Injection (AIR) system test lasts approx. 60 seconds. - Check specified value in display field 4 after indication "Test ON"
appears:
Pa
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Page 45 of 47
01-111
Display fields
1 2 3 4
Display group 077: Secondary Air Injection (AIR) system diagnostic
Display xxxx/min xx.x
g/s %
---
Indicated Engine speed
(RPM) Air
mass Relative air
mass
Secondary air
system Diagnostic condition
Functional
range 670 to 6800
RPM
Test OFF
Test ON
System OK
System not OK
Specified
value 720 to 820
RPM
1)
630 to 730
RPM 2) 0 to 5 -80 to 20 System OK
Notes
If "System not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15
1) Front Wheel Drive Vehicles 2) All-Wheel Drive Vehicles
Pa
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