wiring diagram AUDI A4 1996 B5 / 1.G ATW Engine On Board Diagnostic Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1996, Model line: A4, Model: AUDI A4 1996 B5 / 1.GPages: 19, PDF Size: 0.1 MB
Page 8 of 19

01-7
      
-  Check following wire connection for open circuit 
and short circuit to B+: 
     
Test box  
VAG1598/31  
Socket  
Instrument cluster  
  
Terminal  
47    Electrical Wiring Diagrams, 
Troubleshooting & Component 
Locations   
     
-  Repair open circuit or short circuit if 
necessary. 
      If wire connection is OK:  
     
-  Replace Engine Control Module (ECM)   Page 
24
-23
 
Pa
ge 8 of 19 On Board Dia
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play?action=Goto&t
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e=re
pair&id=AUDI.B5.FU06.01.1 
Page 9 of 19

01-8
      
B- Exhaust MIL remains constantly lit  
     
-  Check DTC memory of Engine Control Module 
(ECM)  Page 01
-16
 . 
      If no DTCs are stored:  
     
-  Connect VAG1598/31 test box at wiring harness 
to Engine Control Module (ECM), do not connect 
ECM  Page 24
-19
 . 
     
- Remove instrument cluster:
     
       Repair Manual, Electrical Equipment, Repair 
Group 90; Instrument cluster, removing and installing
   
     
-  Check following wire connection for short circuit 
to Ground (GND): 
     
Test box  
VAG1598/31  
Socket  
Instrument cluster  
  
Terminal  
47    Electrical Wiring Diagrams, 
Troubleshooting & Component 
Pa
ge 9 of 19 On Board Dia
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.1 
Page 12 of 19

01-10
      
VAS5051 tester or VAG1551 scan tool, 
connecting and selecting functions
 
     
Test requirements:  
     
Fuses for engine electronics OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations   
     
Fuel Pump (FP) relay OK; checking   Page 24
-53
 . 
     
Battery voltage at least 12.7 V 
     Ground (GND) connections at engine and 
transmission OK 
     
Procedure  
    
Note:  
Data Link Connector (DLC) is located in front left knee bolster.  -  Connect VAS5051 tester to vehicle with VAS5051/1 diagnostic wire. 
Alternately, VAG1551 Scan Tool (ST) can also be attached using 
VAG1551/3A adapter. 
Pa
ge 12 of 19 On Board Dia
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e=re
pair&id=AUDI.B5.FU06.01.1 
Page 13 of 19

01-11
      
WARNING! 
     
Observe safety precautions   Page 01
-9 . 
     
Note:  
     The following description only explains 
implementation of On Board Diagnostic using 
VAG1551 Scan tool. When using the VAS5051 
tester, observe instructions in the tester's user 
manual. VAG - On Board Diagnostic (OBD) 
HELP
1- Rapid data transfer1
)
2- Blink code output1
)
    
Indicated on display  1) Operating modes 1 and 2 are displayed alternately  
Note:  
If nothing appears in display: 
- Perform troubleshooting procedure after "troubleshooting procedure leak 
test": 
 Electrical Wiring Diagrams, Troubleshooting & Component Locations   
Pa
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pair&id=AUDI.B5.FU06.01.1 
Page 17 of 19

01-14
      
Note:  
     
It will be possible to display the control module 
identification again after pressing buttons -0- 
and -1- to select "Check Control Module 
Versions" and confirming with the -Q- button. 
Rapid data transfer 
HELP
Control module not respondin
g!
    
- Perform troubleshooting procedure after "troubleshooting procedure leak 
test": 
 Electrical Wiring Diagrams, Troubleshooting & Component Locations   
When indicated on display
Rapid data transfer 
HELP
K-wire does not switch to Ground
     
Rapid data transfer 
HELP
K-wire does not switch to B+
     
Rapid data transfer 
HELP
Malfunction in communication set-up
     
Pa
ge 17 of 19 On Board Dia
gnostic 
(OBD
)
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p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.01.1