ECO mode AUDI A6 1999 C5 / 2.G ATQ Engine Output Diagnostic Test Mode Workshop Manual

01-56


Output Diagnostic Test Mode
(DTM) (function 03)

Notes:

Output Diagnostic Test Mode (DTM) is only
possible with engine idle and ignition switched
on.
Output Diagnostic Test Mode (DTM) is aborted
if engine is started or an RPM signal is
recognized.
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.
The electric Fuel Pump (FP) runs during all of
output Diagnostic Test Mode (DTM).
Engine must be started before repeating output
Diagnostic Test Mode (DTM). (ECM must
recognize an engine speed of above 300 RPM).
Pa
ge 1 of 12 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.3

01-57
Output Diagnostic Test Mode (DTM) activates
the following components in the specified
sequence:

Activation sequence
1 Evaporative Emission (EVAP) canister purge
regulator valve -N80-
2 Secondary Air Injection (AIR) solenoid valve
-N112-
3 Secondary Air Injection (AIR) pump relay -
J299-
4 Intake manifold change-over valve -N156-
5 Camshaft adjustment 1 (Valve 1 for camshaft
adjustment -N205- and valve 2 for camshaft
adjustment -N208-)
6 Leak Detection Pump (LDP) tank ventilation
system
7 Cylinder 1 fuel injector -N30-
8 Cylinder 4 fuel injector -N33-
9 Cylinder 3 fuel injector -N32-
10 Cylinder 6 fuel injector -N84-
11 Cylinder 2 fuel injector -N31-
12 Cylinder 5 fuel injector -N83-
Pa
ge 2 of 12 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.3

01-59

Output Diagnostic Test Mode EVAP canister pur
ge re
gulator valve -N80

Indicated on display:
If valve is not activated (does not click):
Activating the Secondary Air Injection (AIR) solenoid valve (Indicated on VAG1551: from 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
-128
.
-
Press button.
Output Diagnostic Test Mode Secondar
y air in
jection solenoid valve -N112

Indicated on display:
If valve is not activated (does not click):
Repair Manual, Engine Mechanical, Repair Group 26; Secondary Air
Injection (AIR) system
Activating the Secondary Air Injection (AIR) pump relay
This 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 4 of 12 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.3

01-60

Output Diagnostic Test Mode Secondar
y air in
jection pump rela
y -J299

Indicated on display:
If the Secondary Air Injection (AIR) pump motor -V101- does not run in
intervals:
Repair Manual, Engine Mechanical, Repair Group 26; Secondary Air
Injection (AIR) system
Activating intake manifold change-over valve 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 for approx. 1
minute in intervals unless the next actuator is selected first by pressing
the button. - Check Secondary Air Injection (AIR) pump relay -J299-:-
Press button.
Output Diagnostic Test Mode Intake manifold chan
geover valve -N156

Indicated on display:
If valve is not activated (does not click):
This valve is activated for approx. 1 minute (clicks), unless - button
is pressed first to switch to the next actuator. - Check intake manifold change-over valve -N156- Page 24
-67Pa
ge 6 of 12 Out
put Dia
gnostic Test Mode
(DTM
) (function 03
)
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.01.3