1997 AUDI A4 Brakes ABS EDL ASR Bosch 5.3 Workshop Manual

01-126

ABS/EDL
-K47- Brake
system ASR

-K86-
1) Reasons why the indicator lamps light up






X1) The vehicle is equipped with ASR:
There is a malfunction that affects only the ASR system. The ABS and EDL systems are
not deactivated. Check DTC memory page 01
-187

ASR is switched off via the traction control button. If the traction control indicator light
does not light up in this case, check the switch and the indicator light, carry out the
"Electrical test", steps 10 and 11 page 01
-166
.
ASR is in adjustment mode. The traction control indicator light blinks 3 times per second.Short circuit to B+ in the traction control button: The traction control indicator light
switches off five minutes after ignition is switched on. The lamp remains constantly lit after ignition is switched on, but none of the above
mentioned conditions are true. There is a short to Ground (GND) in the wiring that
controls the traction control indicator light between terminal 20 of the ABS control module
-J104- and the instrument cluster.



There is an irregularity present or a complaint has been made. The indicator lamps go
on during the self-test and then go out. The possible causes are as follows: The DTC "Brake light switch -F-" is stored in DTC memory , check DTC memory page 01
-187
.
The DTC "ABS/instrument cluster electrical connection" is stored in DTC memory , check
DTC memory page 01
-187
.
Pa
ge 9 of 11 ABS/EDL/ASR Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.9

The onset of EDL was shut-off to avoid an overheating in the brake system, read
measuring value block page 01
-140
.
1) The traction control indicator light is only available in vehicles equipped with ASR.
Pa
ge 10 of 11 ABS/EDL/ASR Bosch 5.311/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.9

01-127

ABS/EDL
-K47- Brake
system ASR

-
K86-
1) Reasons why the indicator lamps light up





X





X
The vehicle can be equipped either with or without ASR. No DTCs are stored in DTC
memory. The ABS/EDL lamp remains constantly lit after ignition is switched on and the
the red "brake system malfunction" symbol also lights up 3 seconds after ignition is
switched on. The traction control indicator lamp does not light up even for vehicles
equipped with ASR.

There is an open circuit or short circuit to B+ in the wire that controls the ABS/EDL
warning lamp between terminal 21 of the ABS control module -J104- and the instrument
cluster; carry out "Electrical test" step 8 page 01
-166
.
Voltage supply for control module less than 6 volts; carry out "Electrical test" step 1
page 01
-166
.


X

No DTCs are stored in DTC memory. The red "brake system malfunction" symbol
remains lit after the ignition is switched on.

The brake fluid level is too low.
Malfunction in instrument cluster: Carry out "Electrical test" step 9, page 01
-166
.
1) The traction control indicator light is only available in vehicles equipped with ASR.
Pa
ge 11 of 11 ABS/EDL/ASR Bosch 5.311/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.9