coolant reservoir AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1094/w960_1094-0.png AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual

Page 11 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-81
      
Checking primary voltage  
    
Note:  
Coolant reservoir screws must be removed and coolant reservoir must be 
placed to side in order to access the harness connector. The coolant 
hoses

Page 12 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-82
       If specified value is not obtained:  
     
-  Check oxygen sensor wiring.
      If specified value is obtained:  
     
-  Replace Heated Oxygen Sensor (HO2S)-G39-
. 
     
Checking oxyg

Page 20 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-90
      
Test requirements:  
     
Coolant Temperature at least 80  C. 
     
Fuse for oxygen sensor heating OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations

Page 36 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-104
      
Checking primary voltage  
    
Note:  
Coolant reservoir screws must be removed and coolant reservoir must be 
placed to side in order to access the harness connector. The coolant 
hose

Page 37 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-105
       If specified value is not obtained:  
     
-  Check oxygen sensor wiring.
      If specified value is obtained:  
     
-  Replace Oxygen Sensor (O2S) behind Three 
Way Catalytic Conver

Page 40 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-108
      
Test requirements:  
     
Coolant Temperature at least 80  C. 
     
Fuse for oxygen sensor heating OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations

Page 45 of 46

AUDI A4 2000 B5 / 1.G AWM Engine Oxygen Sensor Control Checking Workshop Manual 24-112
      
Oxygen sensor, removing and installing
 
     
Special tools and equipment  
    
Procedure  
3337 wrench, 7-piece set Locking compound G 052 112 A3
    
Note:  
Coolant reservoir screws