change time AUDI A6 1995 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual

24-25

- Check Oxygen Sensor (O2S) control before
TWC (display fields 1-4):

Display fields

1 2 3 4
Display group 33: Oxygen Sensor (O2S) control (before TWC)
Display xx.x % x.xxx V xx.x % x.xxx V
Indicates O2S control
Bank 1, Sensor 1
(before TWC) O2S voltage
Bank 1, Sensor 1
(before TWC) O2S control
Bank 2, Sensor 1
(before TWC) O2S voltage
Bank 1, Sensor 1
(before TWC)
Range -25.0 to +25.0 % 0.000-1.000 V -25.0 to +25.0 % 0.000-1.000 V
Specified
value -10.0 to +10.0 %
value must change by
at least 2 % 0.000 to 1.000 V
value must fluctuate at least
30 times per minute, and
change by at least 0.3 volts -10.0 to +10.0 %
value must change by
at least 2 % 0.000 to 1.000 V
value must fluctuate at least
30 times per minute, and
change by at least 0.3 volts

If not as specified
page 24
-26
,
Continuation
If not as specified page 24
-
28
, Evaluation of display
group 33
If not as specified
page 24
-26
,
Continuation
If not as specified page 24
-
28
, Evaluation of display
group 33
Pa
ge 33 of 166 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1

24-61

- Increase engine speed to 1800-2200 RPM.

- Maintain engine speed at 1800-2200 RPM until
display field 4 changes from "Test OFF" to "Test
ON."

- Maintain engine speed at 1800-2200 RPM and
compare display with specified values for
oxygen sensor aging (before TWC) in display
fields 3 and 4).

Note:
To be sure that the temperature is within the
specified range, the specified RPM has to be
maintained for at least 1 minute.

Display fields

1 2 3 4
Display group 34: Oxygen sensor aging (time period check of oxygen sensor) bank 1, sensor 1
Display xxxx RPM xx.xx ms xx.xx s Test OFF/Test ON
B1-S1 OK/B1-S1 n.OK
Indicates Engine speed
(in 40 RPM steps) Engine load Time period
Bank 1, Sensor 1 Diagnostic status
Diagnostic result
Range 0 - 6800 RPM 0.00 - 12.75 ms --- ---
Pa
ge 77 of 166 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1

24-64

- Increase engine speed to 1800-2200 RPM.

- Maintain engine speed at 1800-2200 RPM until
display field 4 changes from "Test OFF" to "Test
ON."

- Maintain engine speed at 1800-2200 RPM and
compare display with specified values for
oxygen sensor aging (before TWC) in display
fields 3 and 4).

Note:
To be sure that the temperature is within the
specified range, the specified RPM has to be
maintained for at least 1 minute.

Display fields

1 2 3 4
Display group 35: Oxygen sensor aging (time period check of oxygen sensor) bank 2, sensor 1
Display xxxx RPM xx.xx ms xx.xx s Test OFF/Test ON
B2-S1 OK/B2-S1 n.OK
Indicates Engine speed
(in 40 RPM steps) Engine load Time period
Bank 2, Sensor 1 Diagnostic status
Diagnostic result
Range 0 - 6800 RPM 0.00 - 12.75 ms --- ---
Pa
ge 82 of 166 Motronic Multi
port Fuel In
jection
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.24.1