AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual A4 1997 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1045/w960_1045-0.png AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual

Page 121 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-95
      
Fuel pump relay and connections, 
checking
 
    
The fuel pump relay is located at relay position 6 on the relay panel on the 
left side under the instrument panel.  
Checking function o

Page 122 of 166

AUDI A4 1997 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

Page 123 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual -  Initiate output Diagnostic Test Mode (DTM) and advance to test of 
cylinder 1 fuel injector -N30-   page 01
-51
 . 
 
LED test light must light up
 Fuel pump relay must be activated
 Fuel pump must

Page 124 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-97
       If the LED test light does not light up:  
     
-  Repeat test at other terminal of fuse 29.
    
If the LED test light still does not light up:  
-  Check wiring for open circuit betwee

Page 125 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual  
Fuel pump must run 
Pa
ge 125 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
pair&id=AUDI.B5.F

Page 126 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-98
       If the LED test light does not light up:  
     
-  Repeat test at other terminal of fuse 34.
    
If the LED test light still does not light up:  
-  Check wiring for open circuit betwee

Page 127 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-99
      
Checking fuel pump relay voltage supply and 
actuation  
     
-  Remove fuel pump relay -J17- from relay panel 
position 6. 
     
Checking fuel pump relay voltage supply 
     
-  Switc

Page 128 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-100
      
Checking fuel pump relay actuation 
    
Note:  
The LED light will light dimly before and after cranking the starter. 
If the LED test light does not light up while cranking the starter

Page 129 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-101
       If the wiring is OK, but the LED test light does not 
light up:  
     
-  Replace Motronic ECM -J220-   page 01
-68
 .
     
-  Carry out adaptation of throttle valve control 
module to

Page 130 of 166

AUDI A4 1997 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Workshop Manual 24-102
      
Fuel injectors, checking
 
     
WARNING! 
     
Fire hazard! Do not smoke, work near heaters 
or open flame, or have anything nearby that 
could ignite fuel. The fuel system is under 
p