1999 AUDI A4 buttons

01-244
Display group 099 Display
shows Display/specified
value Designation/diagnosis
Basic
setting 99
1 2 3 4 ... RPM 1 = Momentary engine speed Display group 003, display field 1 ...% 2 = Momentary engine load display group 003, display field 2
... C
3 = Coolant temperature display group 001, display field 1

-Control OFF
and/or
-Control ON
4 = Oxygen sensor control OFF in "Basic Setting" function 04; Oxygen sensor control
ON in "Read Measuring Value Block" function 08
Notes on display field 4:

For defined troubleshooting, the oxygen sensor control is switched off when display group 099 is selected under "Basic
Setting" function 04, and switched on when display group 099 is selected under "Read Measuring Value Block"function
08. When leaving "Basic Setting" function 04, oxygen sensor control is automatically active again.
You can switch back and forth between "Basic Setting" function 04 and "Read Measuring Value Block" function 08 by
pressing buttons -4- and -8- on the VAG 1551 scan tool.
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01-245

Engine Control Module (ECM), coding


Notes:

During Engine Control Module (ECM)
identification, a 5-digit code must always be
displayed.
Coding is carried out with the VAG 1551 scan
tool.
If coding that corresponds to the vehicle is not
displayed or if the ECM has to be replaced, the
ECM must be coded as follows:

- Connect VAG 1551 scan tool page 01
-7 .
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -7- to select "Code Control Module" function 07.
Rapid data transfer
Q
07 - Code Control Module

Indicated on display
- Press -Q- button to confirm input.
Code control module QEnter code number XXXXX
(0-32000
)

Indicated on display
- Enter code number for vehicle and press -Q- button to confirm input.
Coding variations page 01
-247
.
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01-246

8D0906266 2.8l V6/2V MPI OBD2
D01
Coding 01051
WSC 06388

ECM identification and entered coding (e.g. 01051) are shown.
-
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.
Rapid data transfer
HELP
Insert address word XX

Indicated on display
Notes:
The ECM uses the coding that is entered and displayed only after the
ignition has been switched off once. Incorrect coding leads to:
Driving performance problems (jerky shifting, rough load change, etc.)Increased fuel consumptionElevated exhaust gas valuesDecrease in transmission service lifeStoring of malfunctions that are not present in DTC memoryFunctions are not carried out (oxygen sensor control, triggering of the
EVAP canister system, etc.).
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01-250

- Connect VAG 1551 scan tool and operate until
display shows "Select function XX" page 01
-
7 .
Rapid data transfer
HELP
Select function XX

Indicated on display
Note:
After the HELP button is pressed, an overview of possible functions is
printed out.
- Press buttons -0- and -8- to select "Read Measuring Value Block"
function 08.
Rapid data transfer
HELP
08 - Read Measuring Value Block

Indicated on display
- Press -Q- button to confirm input.
Read measurin
g value block
HELP
Input displa
y group number XXX

Indicated on display
Note:
After the HELP button is pressed, the procedure for input of the display
group number is printed out.
Note:
Display group number 001 is used as an example to show the input - Input desired display group number according to display group
overview "Basic Setting" function 04, page 01
-150
.
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01-251

- Push buttons -0-, -0- and -1- for display group
number 001. Read measurin
g value block
Q
Input displa
y group number 001

Indicated on display
- Press -Q- button to confirm input.
Read measuring value block
1
1 2 3 4

Display fields 1 through 4 are indicated on the display.
Notes:
To change to another display group, proceed as follows:
Display group
VAG 1551 scan tool
VAG 1552 scan tool
Higher Press -3- button
Press button Lower Press -1- button
Press button Skipped Press -C- button Press -C- button
The values in display fields 1 through 10 are shown in decimal form in
display group 000. 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. When the printer is switched on, the current display is printed on the
paper strip. Every time the PRINT button is pressed, the current display is printed
out again.
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01-252

- 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.
Rapid data transfer
HELP
Insert address word XX

Indicated on display
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01-253

Read Individual Measuring Values (scan
tool function 09)


Note:
The function "Read Individual Measuring Values"
can be selected with buttons -0- and -9-.
However, no display fields can be selected or
information displayed since for OBD II the ECM
does not currently carry out function 09.
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01-254

Adaptation (scan tool function 10)


Note:
The function "Adaptation" is selected with
buttons -1- and -0-. Display groups 001 and 002
can be called with function 10. If the stored
adaptation value is changed in display group 001
and/or display group 002 by input of another
adaptation value, this has no effect on the fuel
injection and ignition system.
Pa
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