AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual https://www.carmanualsonline.info/img/6/1045/w960_1045-0.png AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual

Page 61 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-48
      
Checking O2S wiring, bank 1, sensor 2  
     
-  Disconnect 4-pin connector (green) for Oxygen 
Sensor (O2S) behind Three Way Catalytic 
Converter (TWC) -G130-. 
     
-  Connect VAG1598/

Page 62 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-49
       If wiring is OK:  
     
-  Replace Motronic ECM -J220-   page 01
-68
 .
     
-  Carry out adaptation of throttle valve control 
module to ECM   page 24
-150
 . 
     
- Check readiness

Page 63 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-50
      
Checking O2S wiring, bank 2, sensor 2  
     
-  Disconnect 4-pin connector (brown) for Oxygen 
Sensor (O2S) 2 behind Three Way Catalytic 
Converter (TWC) -G131-. 
     
-  Connect VAG159

Page 64 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-51
       If wiring is OK:  
     
-  Replace Motronic ECM -J220-   page 01
-68
 .
     
-  Carry out adaptation of throttle valve control 
module to ECM   page 24
-150
 . 
     
- Check readiness

Page 65 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-52
      
Oxygen Sensor (O2S) heater behind 
TWC, checking
 
     
Notes:  
     
Connector for Oxygen Sensor (O2S) heater 
(behind TWC) -Z29- (bank 1, sensor 2): 4-pin, 
green 
     Connector for

Page 66 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual      
Test requirements  
     
Fuse for Oxygen Sensor (O2S) heater OK 
     Engine Coolant Temperature (ECT) at least 
80 C (176 F) 
Pa
ge 66 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i

Page 67 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-53
      
Checking  
     
-  Connect VAG1551 or VAG1552 scan tool and 
press buttons -0- and -1- to insert "Engine 
Electronics" address word 01 (with engine 
running at idle)   page 01
-8 . 
Rapi

Page 68 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual 24-54
      
-  Compare display and specified values (display 
fields 3 and 4): 
  
Display fields  
  
1   2   3   4  
Display group 40: Oxygen Sensor (O2S) heating (before and after TWC)  
Display

Page 69 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair Manual input. 
     
-  Switch ignition off.
Pa
ge 69 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pa

Page 70 of 166

AUDI A4 2000 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Repair 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: