1996 AUDI A4 AWM Engine Output Diagnostic Test Mode Workshop Manual

01-58

Activating camshaft adjustment valve

-
Press button

Display on VAS5051:
If valve is not activated (does not click):
Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AWM, Repair Group 15; Checking camshaft adjustment
A - 5. Actuator in test
5 - Camshaft adjustment
This valve is activated for approx. 1 minute (clicks), unless
button is pressed first to switch to the next actuator.
- Check camshaft adjustment valve:
Pa
ge 9 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

01-59

Activating Leak Detection Pump (diagnostic
pump for tank ventilation system)

-
Press button

Display on VAS5051:
Note:
The click can be heard by listening near the rear left wheelhousing.
If valve is not activated (does not click):
Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AWM, Repair Group 20; components of the EVAP canister system, servicing; Leak Detection Pump (LDP)
-V144
-, checking.
A - 6. Actuator in test
6 - Leak Detection Pump (LDP) tank ventilation system
Th change-over valve in the LDP is activated for approximately 1
minute (clicks), unless button is pressed first to switch to the
next actuator.
Pa
ge 10 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

01-60

Turbocharger boost pressure recirculation
valve, activating

-
Press button

Display on VAS5051:
If valve is not activated (does not click):
Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AWM, Repair Group 21, Charge air system with turbocharger
A - 7. Actuator in test
7 - Recirculating valve for turbocharger -N249-
This valve is activated for approx. 1 minute (clicks), unless
button is pressed first to switch to the next actuator.
Pa
ge 11 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

01-62

-
Press button

Display on VAS5051:
If injector does not click: A - 9. Actuator in test
9 - Cylinder 3 Fuel Injector -N32-
-
Press button
Fuel injector must click 5 times after button is pressed.
- Check fuel injectors Page 24
-37
.
-
Press button

Display on VAS5051:
If injector does not click: A - 10. Actuator in test
10 - Cylinder 4 Fuel Injector -N33-
-
Press button
Fuel injector must click 5 times after button is pressed.
- Check fuel injectors Page 24
-37
.
Pa
ge 13 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

01-63

-
Press button

Display on VAS5051:
If injector does not click: A - 11. Actuator in test
11 - Cylinder 2 Fuel Injector -N31-
-
Press button
Fuel injector must click 5 times after button is pressed.
- Check fuel injectors Page 24
-37
.
Pa
ge 14 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

01-64

Activate brake system vacuum pump
1)

1) Only vehicles with automatic transmission

-
Press button

Display on VAS5051:
If the vacuum pump for brake booster does not start up in intervals:
Repair Manual, Brake System, Repair Group 47
A - 12. Actuator in test
12 - Brake system vacuum pump
The vacuum pump for brake booster on right at firewall must start
up in intervals for approx. 1 minute, unless the button is
pressed first to end On Board Diagnostic (OBD).
- Check vacuum pump for brake booster:
Pa
ge 15 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