1998 AUDI A4 ignition

01-51


Output Diagnostic Test Mode
(DTM) (function 03)

Notes:

Output Diagnostic Test Mode (DTM) is only
possible with engine idle and ignition switched
on.
The electric Fuel Pump (FP) runs during all of
output Diagnostic Test Mode (DTM).
In output Diagnostic Test Mode (DTM),
individual actuators (with the exception of the
fuel injectors) are activated for approximately 1
minute unless the next actuator is selected
earlier by pressing the button.

Actuators are checked either acoustically or by
touch.
Output Diagnostic Test Mode (DTM) is aborted
if engine is started or an RPM signal is
recognized.
Before re-initiating output Diagnostic Test Mode
(DTM), engine must be started and the ignition
must be switched off and on again.
Pa
ge 1 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3

01-53

Test sequence

- Connect VAS5051 tester Page 01
-7 and
select vehicle system "01 - Engine electronics".
Ignition must remain switched on for this.

Display on VAS5051:
- In selection -1-, click on the diagnostic function "03 - On Board
Diagnostic (OBD)".
Pa
ge 4 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3

01-61

Activating fuel injectors

Note:
Fuel injectors are activated according to ignition
sequence: Cyl. 1, Cyl. 3, Cyl 4, Cyl. 2.

-
Press button

Display on VAS5051:
If injector does not click: A - 8. Actuator in test
8 - Cylinder 1 fuel injector -N30-
-
Press button
Fuel injector must click 5 times after button is pressed.
- Check fuel injectors Page 24
-37
.
Pa
ge 12 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3

01-65

End Output Diagnostic Test Mode (DTM)

-
Press button

Display on VAS5051:
Note:
Before re-initiating output Diagnostic Test Mode (DTM), engine must be
started and the ignition must be switched off and on again. A - Actuator test has ended
-
End function "03 - output Diagnostic Test Mode (DTM)" by pressing
button.
Pa
ge 16 of 16 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU07.01.3