1999 AUDI A4 APB Engine Motronic Syst

01-107

Work step 2: Erase DTC Memory

Test requirements

Ignition switched on
Rapid data transfer
HELP
Select function XX

When indicated on display
Note:
When DTC memory is erased, readiness code is reset and must therefore
be re-generated. - Press button -0- and -5- to select function "Erase DTC Memory" and
press -Q- button to confirm input.
Rapid data transfer DTC memor
y is erased

When indicated on display
-
Press button.
Pa
ge 129 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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01-108

Work step 3: Adaptation Throttle Valve
Control Module to Engine Control Module
(ECM)

Test requirements

Ignition switched on.
Rapid data transfer
HELP
Select function XX

When indicated on display
- Press buttons "04" for the function "Basic Setting" and press Q button
to confirm input.
System in Basic Settin
g
Q
Input displa
y group number XXX

When indicated on display
- Input "060" for "display group number 60" and press Q button to
confirm input.
System in Basic Setting 60
1
2
3
4

When indicated on display
- Check readiness code in display field 3 and 4:
Pa
ge 130 of 166 Motronic s
ystem, On Board Dia
gnostic
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)
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01-109


Display fields

1 2 3 4
Display group 060: Adaptation of throttle valve control module
Display xx % xx %
x
---
Indicated Throttle
valve angle
(angle
sensor 1) Throttle
valve angle
(angle
sensor 2) Adaptation step counter
Adaptation condition
Work area 0 - 100 % 0 - 100 %
0 - 8
ADP. runs
ADP. OK
ADP. ERROR
Specified
value 3 - 93 % 97 - 3 %
8
ADP. OK
Note:


During adaptation, adaptation step counter
must reach the number 8. (Some numbers
may be skipped). If "ADP. ERROR." is displayed:
Check DTC memory Page
01
-15
.
If specified value is not
obtained: Note, Page Page
24
-152
.
Note for display field 3:
During adaptation different digits are displayed in display field 3, which indicate the particular adaptation condition. It is not
important what the adaptation step counter (display field 3) displays during adaptation, rather that display field 4 displays the
Pa
ge 131 of 166 Motronic s
ystem, On Board Dia
gnostic
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specification value "ADP. OK.
Pa
ge 132 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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01-110
If specified value "ADP. OK" is obtained:

- Press -C- button.

Work step 4: Diagnosis of EVAP canister
purge regulator valve

- Start engine (vehicles with manual transmission
depress clutch pedal)

Note:
If necessary, ECM must be re-selected with the
"address word" 01 following engine start, and the
function "initiate basic setting" selected with "04."

Test requirements

Engine at idle
Coolant temperature > 85 C (display group
4, display field 3)
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press button -0-, -7- and -0- to select "display group number 070" and
confirm input with -Q- button.
System in Basic Setting 70

When indicated on display
Pa
ge 133 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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e=re
pair&id=AUDI.B5.FU04.01.1

1
2
3
4
Note:
If test is not initiated or the display jumps from "Test ON" to "Test OFF"
slightly accelerate engine briefly, test will be repeated. - Check specified value in display field 4:
Pa
ge 134 of 166 Motronic s
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01-111


Display fields

1 2 3 4
Display group 070: Diagnostic of EVAP canister purge regulator valve
Display xx % xx.x % xx %
Test ON
Indicated EVAP valve duty
cycle during
diagnosis Oxygen sensor
control deviation
during diagnosis Relative
Ground via
EVAP valve Diagnostic condition
Work
Range min.: 0 %
max.: 100 % min.: -25.0 %
max.: 25.0 %
Test OFF
Test ON
EVAP OK
EVAP n.OK
Abort
Specified
value xx % -5.0 to 4.0 %
xx - xx %
1)
EVAP OK
Note:



If "EVAP n. OK" is displayed: Check DTC
memory Page 01
-15
. Check EVAP canister
purge regulator valve -N80 Page 24
-134

1) A display appears only, if the diagnostic result occurred via deviation from the Idle Air Control (IAC) in a specified tolerance
range and not from deviation from the oxygen sensor control (e.g.: oxygen sensor 1 from EVAP canister). Display field 3 is
only indicated if there is a deviation.
Pa
ge 135 of 166 Motronic s
ystem, On Board Dia
gnostic
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)
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01-112
If the specified value "EVAP OK" is reached:

- Press -C- button

Work step 5: Diagnosis of tank leak test

Note:
This diagnostic is locked the first 230 seconds
after engine is started.

Test requirements

Engine at idle
Coolant temperature greater 85 C (Display
group 4, display field 3)

Intake air temperature less 95 C (Display
group 4, display field 4)
System in Basic System
Q
Input displa
y group number XXX

When indicated on display
- Press buttons -0-, -7- and -1- to select display group number "071" and
press -Q- button to confirm input.
Pa
ge 136 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