1998 AUDI A4 AFC Engine On Board Diagnostic Multiport Fuel Injection Workshop Manual

01-153

- Check and erase DTC memory page 01
-
13
.

There must be no malfunctions stored (if
necessary repair malfunction, erase DTC
memory and test drive, switch engine off and
start again, test drive and, as a check, check
DTC memory again).

Note:
The readiness code is erased each time the DTC
memory is erased (either with function 05 or with
Mode 4).

- After checking and erasing DTC memory, let
engine continue to run at idle.
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
When the HELP button is pressed, an overview of possible functions is
printed out.
- Press buttons -0- and -4- to select "Basic Setting" function 04.
Rapid data transfer
Q
04 - Basic Setting

Indicated on display
- Press Q-button to confirm input.
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Basic settin
g
HELP
Input display group number XXX

Indicated on display
Note:
After the HELP button is pressed, the procedure for inputting the display
group number is printed out.
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01-154

- Select the desired display group number
according to the following display group
overview and press -Q- button to confirm input.

Note:
Display group 001 is used as an example to
show the sequence.

- Press buttons -0-, -0- and -1- to input display
group no. 001. Initiate basic settin
g
Q
Input display group number
01

Indicated on display
- Press -Q- button to confirm input.
Basic setting 1 1 2 3 4

Indicated on display
To change to a different display group, proceed as follows: Display group
VAG 1551 scan tool
VAG 1552 scan tool
Higher Press button -3-
Press button Lower Press button -1-
Press button Skip Press -C- button Press -C- button
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01-155

Notes:

The values in display fields 1 to 10 are shown in
decimal format in display group 000.
In the "Basic Setting" display, the current 3-digit
display group number is shown without the first
zero. In display groups 000 to 009, the number
is shown without the first two zeroes.
If the printer is switched on, the current display
will be printed out on the paper strip.
Each time the PRINT button is pressed, the
current display will be printed out.
If the specified values are obtained in all display
fields:

-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -6- to select "End Output" function 06.
Rapid data transfer
Q
06 - End Output

Indicated on display
- Press -Q- button to confirm input.
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pair&id=AUDI.B5.FU01.01.1

Rapid data transfer
HELP
Insert address word XX

Indicated on display
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01-156
Display group overview with test table

Note:
Display groups 000 to 010 are used for general troubleshooting.
Display group
Display shows
Designation
000 Basic setting 0
1 2 3 4 5 6 7 8 9 10 Key to displays page 01
-163

001 Basic setting 1
1 2 3 4 1 = Engine coolant temperature
2 = Mass Air Flow (MAF) sensor output voltage
3 = Altitude display (only on vehicles with secondary air system )
4 = Engine Control Module (ECM) voltage supply
002 Basic setting 2
1 2 3 4 1 = Throttle Position (TP) sensor voltage (coarse)
2 = Throttle Position (TP) sensor voltage (fine)
3 = Throttle Position (TP) sensor learning value
4 = Closed Throttle Position (CTP) switch
003 Basic setting 3
1 2 3 4 1 = Engine speed (RPM)
2 = Engine load
3 = Throttle angle
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4 = Vehicle speed
004 Basic setting 4
1 2 3 4 1 = Idle Air Control (IAC) valve
2 = Idle Speed Control (ISC) learning value
3 = Idle Speed Control (ISC) learning value
4 = Additional signals
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01-157

Display
group Display
shows Designation
005 Basic setting 5
1 2 3 4 1 = Oxygen sensor-learning value at idle (bank 1)
2 = Oxygen sensor-learning value at partial throttle 1 (bank 1)
3 = Oxygen sensor-learning value at partial throttle 2 (bank 1)
4 = Oxygen sensor-learning value at partial throttle 3 (bank 1)
006 Basic setting 6
1 2 3 4 1 = Oxygen sensor-learning value at idle (bank 2)
2 = Oxygen sensor-learning value at partial throttle 1 (bank 2)
3 = Oxygen sensor-learning value at partial throttle 2 (bank 2)
4 = Oxygen sensor-learning value at partial throttle 3 (bank 2)
007 Basic setting 7
1 2 3 4 1 = Oxygen sensor control (bank 1)
2 = Learning range display
3 = Oxygen sensor-learning requirement diagnosis
4 = Oxygen sensor-learning requirement display
008 Basic setting 8
1 2 3 4 1 = Oxygen sensor control (bank 2)
2 = Learning range-display
3 = Oxygen sensor learning requirement-diagnose
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ge 216 of 366 On Board Dia
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(OBD
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jection
(MFI
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11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU01.01.1