1997 AUDI A4 Radio OBD Workshop Manual

01-1


Radio, On Board Diagnostic
(OBD) (m.y. 1998 )

General information


Technical features of radio systems
The new generation of the Audi radio system has
extensive On Board Diagnostic (OBD) capability.
All radio units have a Diagnostic Trouble Code
(DTC) memory. If a malfunction occurs in one of
the components or wires which is monitored by
the system, a record of the type of malfunction is
stored in DTC memory.
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-2

Radio On Board Diagnostic (OBD),
initiating program


Test requirements

Fuse OK per wiring diagram

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

VAG1551 Scan Tool (ST) connected page 01
-108


Ignition switched on

Notes:
If the display remains blank, check the voltage
supply of the VAG1551 Scan Tool (ST)
according to the wiring diagram.
Additional operating instructions can be printed
out by pressing the HELP button.
The button is used to advance through the
program sequence.
Pa
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(OBD
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

If an incorrect entry is made, press the -C-
button to escape.
In "Rapid data transfer" operating mode 1 the
"Automatic Test Sequence" function 00 can be
carried out. This checks DTC memory of all
vehicle control modules (with OBD capability)
automatically.
Pa
ge 3 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-3

- Switch ignition on.

- Switch printer on by pressing PRINT button
(indicator lamp in button lights up).

- Press button -1- to select "Rapid data transfer"
operating mode 1. Rapid data transfer
HELP
Insert address word XX

Indicated on display
Address word for radio: 56
- Press buttons -5- and -6- to insert "Radio" address word 56.
Rapid data transfer
Q
56 - Radio

Indicated on display
Note:
While the On Board Diagnostic (OBD) program is running "DIAG" will
appear on the radio unit display. - Press -Q- button to confirm input.
Pa
ge 4 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-4

4B0035186A
Radio
D01
Codin
g 00017
WSC 06812

Indicated on display (after about 5 seconds):
Note:
Check coding against coding table page 01
-22
.
4B0035186A: Part No. for radio ( parts catalog)

Radio: component designation
D01: software version installed in radio
Coding 00017: radio coding
WSC 06812: dealership number
-
Press button.
Pa
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(OBD
) (m.
y. 1998 [micro]
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-5

Rapid data transfer
HELP
Control module does not answer

Electrical Wiring Diagrams, Troubleshooting & Component Locations - If display shows one of the following messages, carry out
troubleshooting procedure as described in troubleshooting program for
diagnostic wiring.
Rapid data transfer
HELP
Error in communication link

Rapid data transfer
HELP
K wire not switchin
g to Ground

Rapid data transfer
HELP
K wire not switchin
g to B+

Pa
ge 6 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-6

Rapid data transfer
HELP
Select function XX

Indicated on display
After the HELP button is pressed, a list of the possible functions is printed
out.
On Board Diagnostic (OBD) functions
The following functions are possible:
02 - Check DTC Memory page 01
-7
03 - Output Diagnostic Test Mode (DTM) page 01
-14

05 - Erase DTC Memory page 01
-16

06 - End Output page 01
-18

07 - Code Control Module page 01
-19

08 - Read Measuring Value Block page 01
-25
-
Press button to advance through program sequence.
Pa
ge 7 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-7

Check DTC Memory (scan tool function
02)


Note:
The displayed malfunction is only updated when
the On Board Diagnostic (OBD) program is
initiated or when "Erase DTC Memory" function
05 is used.

- Switch on printer by pressing PRINT button
(indicator lamp in button lights up).
Rapid data transfer
HELP
Select function XX

Indicated on display
- Press buttons -0- and -2- to select "Check DTC Memory" function 02.
Rapid data transfer
Q
02 - Check DTC Memory

Indicated on display
- Press -Q- button to confirm input.
X DTC reco
gnized!

Indicated on display (the number of stored DTCs)
Stored DTCs are displayed and printed out one after the other.
- Check printout against DTC table and repair all malfunctions as
necessary page 01
-9 .
Pa
ge 8 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1