1999 AUDI A4 display

24-70
Reading Display Group 002 Display field
3
Possible cause of malfunction
Corrective action
Less than 2.0
ms
Lower values can only occur when vehicle is on fuel-
shut off (overrun)
More than 4.0
ms Load on engine due to ancillaries- Eliminate load (air conditioner, power
steering, alternator)

Rough idle (engine not running on all cylinders)- Check spark plugs
- Check fuel injectors Page 24
-39


Throttle Valve Control Module -J338 faulty- Check Throttle Valve Control Module
Page 24
-139

Pa
ge 81 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1

24-71
Reading Display Group 002 Display field
4
Possible cause of malfunction
Corrective action
Less than 3.0
g/s
Large quantity of un-metered air between intake manifold
and Mass Air Flow (MAF) sensor
Voltage supply to Mass Air Flow (MAF) sensor or wiring to
Engine Control Module (ECM) - Check intake system for leaks (un-
metered air) Page 24
-76

- Check voltage supply and wiring Page 24
-72

More than 4.5
g/s
Load on engine due to accessories- Eliminate load (A/C, power steering,
generator)

Voltage supply to Mass Air Flow (MAF) sensor or wiring to
Engine Control Module (ECM) - Check voltage supply and wiring Page
24
-72

Pa
ge 82 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1

Rapid data transmission
HELP
Select function XX

Indicated on display:
- Press buttons -0- and -8- to select function "Read Measuring Value
Block" and confirm entry with -Q- button.
Read Measurin
g Value Block
Enter display group number XXX

Indicated on display:
Pa
ge 88 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1

24-77

- Press buttons -0-, -0- and -1- to select "Display
Group 01" and confirm entry by pressing -Q-
button. Read Measuring Value Block 1
1
2
3
4

Indicated on display: (1...4 Display fields)
If the engine speed does not change: - Note engine speed in display field 1.
- Systematically spray parts of intake system with engine leak detection
spray.
-
Press button.- Press buttons -0- and -6- to select function "End Output" and confirm
entry with -Q- button.
Pa
ge 89 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1