engine AUDI A4 1998 B5 / 1.G APB Engine Motronic Syst

01-75

Output Diagnostic Test Mode (DTM)


Notes:

The DTM can only be performed with the
ignition switched on and the engine not running.
The DTM is terminated if the engine is started
or if an engine speed pulse is detected.
During the DTM, individual control elements will
be activated for approx. 1 minute, or until the
test program is advanced to the next control
element by pressing the button.

The control elements can be tested either by
listening or by touching.
If the DTM is to be repeated, the engine must
be started. The engine control module needs to
detect an engine speed of more than 300 rpm.
The electric fuel pump runs continuously
throughout the DTM.
Pa
ge 92 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

01-79

Actuating Secondary Air Injection (AIR)
Solenoid Valve -N112

Note:
Only vehicles with automatic transmission are
equipped with a secondary air injection system.
Vehicles with manual transmission do not have a
secondary air injection system. For this reason
are on vehicles with manual transmission the
following components Secondary Air Injection
(AIR) Solenoid Valve -N112 and Secondary Air
Injection (AIR) Pump Relay -J299 not displayed.

-
Press button.Output Diagnostic Test Mode Secondar
y Air
(AIR
) Injection valve -N112

Indicated on display
This solenoid valve will continue to be actuated (i.e. will click) until the
button is pressed to advance the program to the next control element.
If the secondary air injection valve does not click:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 26, Checking secondary air injection valve

- Check Secondary Air Injection (AIR) Solenoid Valve -N112
Pa
ge 97 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

01-80

Actuating Secondary Air Injection (AIR) Pump
Relay -J299

Note:
Only vehicles with automatic transmission are
equipped with a secondary air injection system.
Vehicles with manual transmission do not have a
secondary air injection system. For this reason is
on vehicles with manual transmission the
following component Secondary Air Injection
(AIR) Pump Relay -J299 not displayed.

-
Press button.Output Diagnostic Test Mode Secondar
y air pump rela
y -J299

Indicated on display
If the Secondary Air Injection (AIR) Pump Motor -V101- does not run at
intervals:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 26, Checking Secondary Air Injection (AIR) Pump Relay
-J299
The Secondary Air Injection (AIR) Pump Relay -J299- activates the
Secondary Air Injection (AIR) Pump Motor -V101-, which runs for
approx: 1 minute at intervals.
- Check Secondary Air Injection (AIR) Pump Relay -J299.
Pa
ge 98 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

01-81

Activating Wastegate Bypass Regulator Valve
-N75-

-
Press button.Output Diagnostic Test Mode Wastegate bypass regulator valve -N75

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 Wastgate Bypass Regulator Valve
-N75

Actuating camshaft adjustment valves -N205-, -N208-
-
Press button.
Output Diagnostic Test Mode Camshaft Ad
justment

Indicated on display
If camshaft adjustment valve 1 or 2 is not activated:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 15, Camshaft adjustment, checking camshaft adjustment valves
- Camshaft adjustment valves 1 and 2 (-N205 and -N208) will continue
to be activated (or will click) for about 1 minute.
Pa
ge 99 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

01-87

Output Diagnostic Test Mode END

Indicated on display
-
Press button.
Rapid data transfer
HELP
Select function XX

Indicated on display (function selection):
Note:
The output Diagnostic Test Mode (DTM) cannot be re-initiated until the
engine is started and ignition switched off and then on again.
Pa
ge 105 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

01-88

Basic setting


With the ignition on and engine not running,
the following operation can be performed in
the "Basic setting" mode (function 04):

Adaptation of throttle valve control module to
ECM Page 24
-146


Vehicles with automatic transmission:
Adaptation of kick down function of accelerator
pedal position sensor to ECM Display group
63 ( Page 24
-166
)

With the engine running, the following
operations can be performed in the basic
setting mode "Function 04":

Learning process (adaptation) for oxygen
sensor control every display group

Troubleshooting by targeted activation and
deactivation of oxygen sensor control display
group 99 (Observe note on page Page 24
-
81
).
Pa
ge 106 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

01-89

Test requirements for operations with engine
running

No DTCs stored in DTC memory
Coolant temperature at least 85 C

Electrical consumers switched off (radiator
fan must not run during test)
A/C switched off

- 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 engine must be
idling.

- Check and erase DTC memory Page 01
-15
.
There should be no malfunctions stored in the
DTC memory. (If necessary repair malfunctions,
erase DTC memory and switch off engine. Start
engine again, road test the vehicle and check
DTC memory again to check).

- Continue to run engine at idle.
Pa
ge 107 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

01-91

Display group 000 (indicated values decimal)

Engine running at idle (Coolant Temperature not less than 80 C)
1 2
3 4
5 6
7 8
9 10
Display fields
Specification Represents





Adaptation value of mixture formation, bank 2 108 - 148 -4 to 4%





Adaptation value of mixture formation, bank 1
108 - 148
-4 to 4%




Control value of mixture formation bank 2
(If out of specification perform road test) 122 - 136 -4 to 4%




Control value of mixture formation bank 2
(If out of specification perform road test)
122 - 136
-4 to 4%



Adaptation value torque loss at idle 124 - 140 -3 to 5%



Idle torque
126 - 135
-1.5 to 1.5%


Throttle valve angle 1 - 7 0.4 to 2.75%


Engine speed (idle speed)
77 - 83
770 - 830 RPM

Engine load (without consumers) 21 - 34 15 - 26%
Engine Coolant Temperature (requirement for basic setting)
177 - 203
85 - 105 C
1) Up-to-date specifications:
Pa
ge 111 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