2000 AUDI A4 fuel

01-76

The DTM activates the following components
in the stated sequence:

Activation sequence
1. EVAP Canister Purge Regulator Valve -
N80-
2. Secondary Air Injection (AIR) Solenoid
Valve -N112-
(This display appears only on vehicles with
automatic transmission)
3. Secondary Air Injection (AIR) Pump Relay -
J299-
(This display appears only on vehicles with
automatic transmission)
4. Wastegate Bypass Regulator Valve -N75
5. Camshaft adjustment
6. Leak Detection Pump for EVAP system
7. Recirculating valve for turbocharger -N249
8. Cylinder 1 Fuel Injector -N30
9. Cylinder 4 Fuel Injector -N33
10. Cylinder 3 Fuel Injector -N32
11. Cylinder 6 Fuel Injector -N84
12. Cylinder 2 Fuel Injector -N31
Pa
ge 93 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

13. Cylinder 5 Fuel Injector -N83
Pa
ge 94 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-77

Test requirements

Fuses for engine electronics OK
Fuel pump relay OK

- Connect vehicle diagnostic, testing and
information system VAS 5051 or VAG1551 scan
tool and select engine electronics control
module by entering address word "01" Page 01
-9 . When doing this the ignition must be
switched on.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -3- to select function "Output Diagnostic Test
Mode."
Rapid data transfer
Q
03 - Output Dia
gnostic Test Mode

Indicated on display
Pa
ge 95 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-82

Actuating Leak Detection Pump (LDP) -V144-

-
Press button.Output Diagnostic Test Mode EVAP s
ystem leak detection pump

Indicated on display
The change over valve in the LDP is activated for approximately 1 minute
(clicks), unless the button pressed to switch to the next actuator.
Note:
The clicking can be heard by listening in the area of the left rear wheel
housing.
If valve is not actuated (does not click):
Repair Manual, Fuel Supply System, Repair Group 20, Components of EVAP system servicing, Checking Leak Detection Pump (LDP)
-V144

Pa
ge 100 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-83

Activating Recirculating valve for
turbocharger -N249

-
Press button.Output Diagnostic Test Mode Recirculating valve for turbocharg -N249

Indicated on display
This solenoid valve is activated for 1 minute (clicks), unless button is
pressed first to switch to the next actuator.
If valve is not activated (does not click):
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 21, Turbocharger, Checking Recirculating valve for turbocharger
-N249

Actuating fuel injectors
Note:
The fuel injectors are activated in firing order that means Cyl.1, Cyl.4,
Cyl.3, Cyl.6, Cyl.2, Cyl,5
-
Press button.
Output Diagnostic Test Mode Cylinder 1 fuel injectors -N30

Indicated on display
After pressing button, fuel injector must click five times. -
Press button.
Pa
ge 101 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-84
If the fuel injector does not click:

- Check fuel injectors Page 24
-39
.

-
Press button.Output Diagnostic Test Mode Cylinder 4 fuel in
jectors -N33

Indicated on display
-
Press button.
Output Diagnostic Test Mode Cylinder 4 fuel injectors -N33

Indicated on display
After pressing arrow button, fuel injector must click five times.
If the fuel injector does not click:
- Check fuel injectors Page 24
-39
.
Pa
ge 102 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-85

-
Press button.Output Diagnostic Test Mode Cylinder 3 fuel injectors -N32

Indicated on display
-
Press button.
Output Diagnostic Test Mode Cylinder 3 fuel in
jectors -N32

Indicated on display
After pressing button, fuel injector must click five times.
If the fuel injector does not click: - Check fuel injectors Page 24
-39
.
-
Press button.
Output Diagnostic Test Mode Cylinder 6 fuel in
jectors -N84

Indicated on display
-
Press button.
Output Diagnostic Test Mode Cylinder 6 fuel injectors -N84

Indicated on display
After pressing button, fuel injector must click five times.
If the fuel injector does not click: - Check fuel injectors Page 24
-39
.
-
Press button.
Pa
ge 103 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1

01-86

Output Diagnostic Test Mode Cylinder 2 fuel in
jectors -N31

Indicated on display
-
Press button.
Output Diagnostic Test Mode Cylinder 2 fuel in
jectors -N31

Indicated on display
After pressing button, fuel injector must click five times.
If the fuel injector does not click: - Check fuel injectors Page 24
-39
.
-
Press button.
Output Diagnostic Test Mode Cylinder 5 fuel injectors -N83

Indicated on display
After pressing button, fuel injector must click five times. -
Press button.
Output Diagnostic Test Mode Cylinder 5 fuel in
jectors -N83

Indicated on display
If the fuel injector does not click:
- Check fuel injectors Page 24
-39
.
-
Press button.
Pa
ge 104 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.01.1