battery AUDI A4 1999 B5 / 1.G Radio OBD Workshop Manual

01-10

DTC
Possible cause
Corrective action
VAG1551 Scan Tool display
00668
Battery Positive Voltage (B+)
Term. 30

Signal too low
Battery discharged or faultyShort circuit in vehicle electrical
system - Charge or replace battery.
- Repair short circuit in vehicle electrical system.
00849
S Contact on Ignition Starter
Switch

Open circuit
Ignition/starter switch -D- faultyOpen circuit in wiring
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Replace ignition/starter switch -D-.
- Trace malfunction using wiring diagram.
00850
Control Output Active, Radio
Amplifier

Short circuit to Ground
Wiring damagedActive amplifier faulty
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Trace malfunction using wiring diagram.
- Replace active amplifier.
Pa
ge 11 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

01-26

Summary of display groups

Display group
No. Indicated on display
001 1 = Speed signal from
speedometer
2 = Battery Positive Voltage
(B+), terminal 30
3 = Radio illumination dimming
in %
4 = S-contact status
002 1 = Front loudspeakers
2 = Front loudspeakers status
3 = Rear loudspeakers
4 = Rear loudspeakers status
003 1 = Type of antenna
2 = Antenna
3 = Antenna status
004 1 = Active speaker control
output
3 = Telephone
Pa
ge 27 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

01-27
Display group 001

Read Measuring Value Block 1

Indicated on display

0 12.3 V 60 % ON


S-contact status
Can be checked while measuring values are being displayedIgnition key withdrawn: display reads "OFF" S-contact reactivated: display reads "ON"



Dimming level of radio illumination in percent (only with light "ON")
0-99%

Battery Positive Voltage (B+), terminal 30
(measurement taken after electrical filter)

Vehicle speed signal from speedometer
0 or 1 (4 impulses per wheel revolution)

Pa
ge 29 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