ESP AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1045/w960_1045-0.png AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual

Page 39 of 166

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-29
      
Checking HO2S reference voltage (Banks 1, 
2)  
     
-  Disconnect 4-pin connector for respective 
HO2S. 
    
If voltage is NOT OK:  
If voltage is OK:  -  Connect multimeter US1119 (Fl

Page 49 of 166

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-37
      
Continuation  
     
-  Disconnect 4-pin connector (black) for 
respective Heated Oxygen Sensor (HO2S). 
    
If resistance is NOT OK:  -  Connect multimeter US1119 (Fluke 83 or equivalen

Page 60 of 166

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-47
      
Checking O2S reference voltage  
     
-  Disconnect 4-pin connector for respective 
Oxygen Sensor (O2S) behind Three Way 
Catalytic Converter (TWC). 
    
If voltage is NOT OK:  
If volt

Page 70 of 166

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-55
      
Continuation  
     
-  Disconnect 4-pin connector for respective 
Oxygen Sensor (O2S) behind Three Way 
Catalytic Converter (TWC). 
    
If resistance is NOT OK:  
If resistance is OK:

Page 122 of 166

AUDI A4 1996 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-96
       If the fuel pump does not respond:  
     
-  Check fuel pump relay actuation   page 24
-
99
 . 
      If the LED test light does not light up:  
     
-  Repeat test at other terminal of