AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual https://www.carmanualsonline.info/img/6/1045/w960_1045-0.png AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual

Page 41 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-31
       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 42 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-32
      
Checking HO2S wiring, bank 2, sensor 1  
     
-  Disconnect 4-pin connector (black) for HO2S -
G108-. 
     
-  Connect VAG1598/22 test box to ECM harness 
connector  page 01
-67
 .

Page 43 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-33
       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 44 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-34
      
Oxygen Sensor (O2S) heater before 
TWC, checking
 
     
Notes:  
     
Connector for Oxygen Sensor (O2S) heater -
Z19- (bank 1, sensor 1): 4-pin, black. 
     Connector for Oxygen Sensor

Page 45 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual      
Fuse for Oxygen Sensor (O2S) heater(s) OK 
     Engine Coolant Temperature (ECT) at least 
80 C (176 F) 
Pa
ge 45 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/23/2

Page 46 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-35
      
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 47 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-36
      
-  Compare display and specified values (display 
fields 1 and 2): 
  
Display fields  
  
1   2   3   4  
Display group 40: Oxygen Sensor (O2S) heating (before and after TWC)  
Display

Page 48 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual input. 
     
-  Switch ignition off.
Pa
ge 48 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 49 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service 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 50 of 166

AUDI A6 1997 C5 / 2.G AHA Engine Multiport Fuel Injection And Ignition System Service Manual 24-38
       If resistance is OK:  
     
-  Switch multimeter to 20 VDC measuring 
range. 
    
If display = Htg.bC.ON:  
If display switches between "Htg.bC.ON" and "Htg.bC.OFF:"  -  Connect multime