AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1126/w960_1126-0.png AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual
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Page 1 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-25
 
     
CAN-bus 
     
CAN-bus, function
 
     
Bus: 
      The term bus refers to a system that transports 
and distributes data.  
     
CAN: 
      The Controller Area Network is a bus syste

Page 2 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-26
       The CAN-bus terminates in a resistor. It prevents 
the transmitted data from returning as an echo 
from the ends and corrupting data.  
      The terminal resistances of the CAN-bus have

Page 3 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-27
      
CAN-bus system, checking
 
     
The DTC table indicated you needed to check 
the bus: 
     
-  Using the relevant wiring diagram, determine 
how many control modules are connected to th

Page 4 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual that use the relevant sensor signal is interrupted. 
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ge 4 of 12 CAN-
bus
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Page 5 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-28
      
Is there is a function malfunction? 
     
- Fix the malfunction before proceeding.
     
-  Note DTCs and erase DTC memory in all control 
modules  page 01
-15
 . 
     
-  Press buttons

Page 6 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual Three or more control modules communicate 
via a "two-line bus system" 
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ge 6 of 12 CAN-
bus
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Page 7 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-29
      
Two control modules communicate via a 
"two-line bus system".  
     
-  Switch ignition off.
    
 Electrical Wiring Diagrams, Troubleshooting & Component Locations    -  Disconnect both

Page 8 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-30
 
    
If no malfunctions could be found in the bus wires:  -  Check the bus wires for a short circuit to B+ or Ground (GND).
-  As a test, replace one of the control modules. Select a control m

Page 9 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-31
      
Three or more control modules are 
communicating across a "two-line bus 
system".  
     
-  Analyze the DTCs stored in the memories of the 
control modules. 
     
Example 1: 
    
From

Page 10 of 12

AUDI A4 1996 B5 / 1.G Brakes Can Bus Workshop Manual 01-32
      
Example 2: 
    
From the DTCs stored in the memories, you have determined that control 
module 2 is not communicating with control modules 1 and 3.  
 Electrical Wiring Diagrams, Trouble
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