display AUDI A4 2000 B5 / 1.G AWM Engine Output Diagnostic Test Mode Workshop Manual

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

01-54

Activating the EVAP canister purge regulator
valve (tank ventilation valve)

Note:
The Fuel Pump (FP) relay must trigger, the Fuel
Pump (FP) must run, flowing noise at fuel
pressure regulator is clearly audible. If Fuel
Pump (FP) does not run, check activation
Page 24
-55
.

Display on VAS5051:
If valve is not activated (does not click): A - 1. Actuator in test
1 - EVAP canister purge regulator valve -N80-
This valve is activated for approx. 1 minute (clicks), unless
button is pressed first to switch to the next actuator.
- Check Evaporative Emission (EVAP) canister purge regulator valve -
N80- Page 24
-114
.
Pa
ge 5 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

01-55

Activating the Secondary Air Injection (AIR)
solenoid 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 26; Checking Secondary Air Injection (AIR) system
A - 2. Actuator in testThis valve is activated for approx. 1 minute (clicks), unless
button is pressed first to switch to the next actuator.
- Check Secondary Air Injection (AIR) solenoid valve -N112-:
Pa
ge 6 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

01-56

Activating the Secondary Air Injection (AIR)
pump relay

-
Press button

Display on VAS5051:
If the Secondary Air Injection (AIR) pump motor does not start up in
intervals:
Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Engine Mechanical, Engine
Code(s): AWM, Repair Group 26; Checking Secondary Air Injection (AIR) system
A - 3. Actuator in test
3 - Secondary Air Injection (AIR) pump relay -J299-The Secondary Air Injection (AIR) pump relay -J299- (in 3-socket
relay carrier in the E-box, at left in the plenum chamber , position
2) switches the Secondary Air Injection (AIR) pump motor -V101-
on and off in intervals for approx. 1 minute unless the next
actuator is selected first by pressing the button.
- Check Secondary Air Injection (AIR) pump relay -J299-:
Pa
ge 7 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

01-57

Activating wastegate bypass regulator valve -
N75-

-
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 - 4. Actuator in test
4 - Wastegate bypass regulator valve -N75-
This valve is activated for approx. 1 minute (clicks), unless
button is pressed first to switch to the next actuator.
Pa
ge 8 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

01-58

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