AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1092/w960_1092-0.png AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual
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Page 1 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-1
 
     
On Board Diagnostic (OBD) 
     
On Board Diagnostic (OBD), technical 
data
 
     
Equipment  
     
Data is transmitted between the control module 
and the VAS5051 tester or VAG1551 Sca

Page 2 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-2
      
If the ECM recognizes malfunctions that lead to 
a worsening of emissions values, it indicates 
them by lighting the Malfunction Indicator Lamp 
(MIL) -K83- in the instrument cluster. Mean

Page 3 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-3
      
Malfunction Indicator Lamp (MIL), 
significance
 
      If the ECM recognizes malfunctions that lead to a 
worsening of emissions values, it indicates them 
by lighting the exhaust Malfunc

Page 4 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-4
      
Continuously lit: 
      There is a malfunction that causes increased 
emissions. Check DTC memory for Motronic 
ECM and automatic transmission (if installed).  
      Check DTC memory if

Page 5 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-5
      
Malfunction Indicator Lamp (MIL), 
checking
 
     
Function test of warning lamp  
     
-  Switch ignition on.
     
 
Exhaust MIL must light up
     
- Start engine. 
     
 Shortly aft

Page 6 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-6
      
Safety precautions
 
      If special testing equipment is required during 
road test, note the following:  
     
WARNING! 
     
Test equipment must always be secured to 
the rear seat a

Page 7 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-7
      
VAS 5051 tester, connecting and 
selecting functions
 
     
Test requirements:  
     
Fuses for engine electronics OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Compone

Page 8 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual If a malfunction indication is displayed: 
 Operating instructions for the VAS 5051 tester   
Pa
ge 8 of 13
11/22/2002 file://C:\DOCUME~1\Bear\LOCALS~1\Tem
p\triFMELH.htm

Page 9 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-8
 
    
Display on VAS5051:  
-  Press the "Guided fault finding" button.
    
Display on VAS5051:  
Note:  
Selecting "00 - Check DTC memory - entire system" in selection -1- 
initiates the autom

Page 10 of 13

AUDI A4 2000 B5 / 1.G AWM Engine On Board Diagnostic Workshop Manual 01-9
 
    
Display on VAS5051:  
Depending on desired function   Table "diagnostic functions",   Page 01
-11
 :  
or  
-  Switch ignition on.
- Start engine.
-  Press selection -1- of vehicle system
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