01-91
 
Function test: Red brake warning symbol  
Test step  
VAG  
1598/20 
sockets  Test of  
Test requirements 
- Additional work stepsSpecified value  
Corrective action  
20  
  
Continuation:     Function of red 
"brake system 
malfunction" 
symbol  - For vehicles with 
automatic transmission and 
high-line instrument cluster, 
depress the brake pedal 
and select a driving gear. The ABS/EDL indicator 
lamp and the red "brake 
system malfunction" 
symbol light up. If the 
traction control indicator 
light is installed and OK, it 
also lights up.   Repair Manual, 
Electrical Equipment, Repair Group 90; Instrument cluster
    - Malfunction in 
instrument cluster 
Pa
ge 46 of 79 Read Measurin
g Value Block 
(function 08
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8 
         
        
        01-113
 
Output on printer of 
VAG1551 Scan Tool (ST)  Possible cause  
Corrective action  
DTC       
00623        
ABS / transmission electrical 
connection  Manual transmission:    
 
This malfunction only 
occurs if vehicle is 
equipped with ASR. 
ABS/EDL/ASR control module -J104- incorrectly 
coded. Short circuit to B+ at terminal 45
 Electrical Wiring Diagrams, 
Troubleshooting & Component 
Locations    - Check coding of 
ABS/EDL/ASR control module -
J104-  page 01
-56
 . 
- Locate and repair short circuit.
  
Automatic transmission:    
  
Open circuit or short circuit to Ground (GND) in wiring 
between ABS/EDL/ASR control module -J104- and 
Transmission Control Module (TCM) -J217-. ABS/EDL/ASR control module -J104- incorrectly 
coded. 
 Electrical Wiring Diagrams, 
Troubleshooting & Component 
Locations    - Check coding of 
ABS/EDL/ASR control module -
J104-  page 01
-56
 . 
- Locate and repair open circuit 
or short circuit. 
Pa
ge 72 of 79 Read Measurin
g Value Block 
(function 08
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.8