AUDI A4 1999 B5 / 1.G Airbag Service OBD User Guide

Function 03 is only available for vehicles 1997 .
Pa
ge 11 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-11

Check DTC Memory (scan tool function
02)


Note:
The DTC display information is updated only
when initiating the On Board Diagnostic (OBD) or
"Erase DTC Memory" function 05.

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

Carrying out "Check DTC Memory" function
02
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 Memor
y

Indicated on display
- Press -Q- button to confirm input.
X DTC recognized

Indicated on display (number of stored Diagnostic Trouble Codes, DTCs).
or:
No DTC recognized

If the message "No DTC recognized" is displayed, the program can be
returned to the starting point by pressing the button.
Pa
ge 12 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-12

Rapid data transfer
HELP
Select function XX

Indicated on display
If something else is displayed:
Scan tool operating instructions - Erase DTC Memory (function 05) page 01
-137
.
- End Output (function 06) page 01
-139
.
- Disconnect VAG1551 Scan Tool (ST) from Data Link Connector (DLC).
Pa
ge 13 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-13
Diagnostic Trouble Code (DTC) table, airbag system

Notes:

In the following table, all the possible malfunctions that can be recognized by the airbag control module -J234- are listed
according to their DTC code numbers. Existing malfunctions will be printed with their 5-digit DTC only if the VAG1551
printer is switched on.
If a malfunction occurs persistently, the airbag Malfunction Indicator Lamp (MIL) -K75- will light up and remain lit until the
malfunction is repaired and the DTC memory has been erased.
If a malfunction occurs only occasionally or if the DTC memory is not erased after a malfunction is repaired, the
malfunction will be displayed as a sporadic malfunction. Such malfunctions are identified by the letters "/SP" to the right on
the VAG1551 display and will cause -K75- to light up continuously.
Before replacing a component shown as malfunctioning, check the wiring to the component for short or open circuit
according to the wiring diagram.
The three digit malfunction type number appearing next to the DTC is a data code which can be disregarded.
Pa
ge 14 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-14

DTC


VAG 1551 scan tool
display Possible cause
Corrective action
00532
Supply voltage B+
Supply voltage too low
Battery discharged or faulty
Short circuit in vehicle
electrical system - Recharge or replace battery.
- Repair short circuit in vehicle electrical system.
00588
Airbag Igniter-Driver
Side-N95
Resistance value too
large Open circuit in wiring
Spiral spring faulty
Driver-side airbag unit faulty
Airbag control module -J234-
faulty Electrical Wiring Diagrams, Troubleshooting & Component
Locations binder - Repair wiring according to wiring diagram.
- Check spiral spring.
- Replace driver-side airbag unit.
- Replace airbag control module -J234-.
00588
Airbag Igniter-Driver
Side-N95
Resistance value too
small
Short circuit in wiring
Spiral spring faulty
Driver-side airbag unit faulty
Airbag control module -J234-
faulty Electrical Wiring Diagrams, Troubleshooting & Component
Locations binder - Repair wiring according to wiring diagram.
- Check spiral spring.
Pa
ge 15 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

- Replace driver-side airbag unit.
- Replace airbag control module -J234-.
Pa
ge 16 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-15

DTC


VAG 1551 scan tool display
Possible cause
Corrective action
00588
Drivers side airbag igniter -N95-
Short circuit to B+
Wire damagedAirbag control module -J234-
malfunctioning
Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram
- Replace airbag control module -J234-
00588
Drivers side airbag igniter -N95-
Short circuit to Ground
Wire damagedDriver-side airbag unit
malfunctioning Airbag control module -J234-
malfunctioning
Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram
- Replace driver-side airbag unit
- Replace airbag control module -J234-
Pa
ge 17 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-16

DTC


VAG 1551 scan tool
display Possible cause
Corrective action
00589
Airbag Igniter 1-Passenger
Side-N131
Resistance value too large

Open circuit in wiringPassenger-side airbag unit
faulty Airbag control module -
J234- faulty Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram.
- Replace passenger-side airbag unit.
- Replace airbag control module -J234-.
00589
Airbag Igniter 1-Passenger
Side-N131
Resistance value too small
Short circuit in wiringPassenger-side airbag unit
faulty Airbag control module -
J234- faulty Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram.
- Replace passenger-side airbag unit.
- Replace airbag control module -J234-.
Pa
ge 18 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-17

DTC


VAG 1551 scan tool display
Possible cause
Corrective action
00589
Passengers side airbag igniter 1 -
N131- Short circuit to B+
Wire damagedAirbag control module -J234-
malfunctioning Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram
- Replace airbag control module -J234-
00589
Passengers side airbag igniter 1 -
N131- Short circuit to Ground
Wire damagedPassenger-side airbag unit
malfunctioning Airbag control module -J234-
malfunctioning Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair wiring according to wiring diagram
- Replace passenger-side airbag unit
- Replace airbag control module -J234-
Pa
ge 19 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2

01-18

V.A.G 1551 print-out
Possible malfunction cause
Corrective action
00589
Igniter 1 for airbag (passenger's
side) -N131
Short to Ground
Wiring damagedFront passenger's airbag
unit faulty Airbag control unit -J234
faulty Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Repair per wiring diagram
- Replace front passenger's airbag unit
- Replace airbag control unit -J234
00591
Left Seat Belt Switch -E24
Implausible switch condition
Left belt lock switch faulty- Replace left belt lock switch
00591
Left Seat Belt Switch -E24
Short circuit to positive Wiring damaged
Electrical Wiring Diagrams, Troubleshooting &
Component Locations binder - Check and repair wiring harness
- Repair per wiring diagram
00591
Left Seat Belt Switch -E24
Short circuit to Ground
Wiring damaged
Electrical Wiring Diagrams, Troubleshooting & - Check and repair wiring harness
- Repair per wiring diagram
Pa
ge 20 of 74 Airba
g system
(with and without side airba
g)
On Board Dia
gnostic
(OBD
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.BD04.01.2