AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1045/w960_1045-0.png AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF

Page 71 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-56
 
    
If display = Htg.aC.ON:  
If display is switching between "Htg.aC.ON" and "Htg.aC.OFF"  -  Connect multimeter between harness connector terminals 1 and 2 (to 
ECM), using VW1594 connector

Page 72 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-57
       If there is no voltage:  
    
If there is still no voltage:  -  Connect multimeter between harness connector terminal 1 (to ECM) 
and vehicle Ground, using VW1594 connector test kit.

Page 73 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-58
       If there is voltage:  
    
If display = Htg.aC.ON:  
If display switches between "Htg.aC.ON" and "Htg.aC.OFF:"  -  Connect multimeter between harness connector terminal 2 (to ECM) 
and B

Page 74 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-59
       If specified value is not attained:  
     
-  Connect VAG1598/22 test box to ECM harness 
connector  page 01
-67
 . 
    
If wiring is OK:  -  Check wiring for open circuit between ECM/t

Page 75 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-60
      
Oxygen Sensor (O2S) aging, bank 1, 
sensor 1, checking
 
     
Required special tools and test equipment  
     
VAG1551 or VAG1552 Scan Tool (ST) with 
VAG1551/3 adapter cable 
     
Tes

Page 76 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF System in Basic Setting 34 1 2 3 4 
    
Indicated on display (1-4 = display fields)  
Pa
ge 76 of 166 Motronic Multi
port Fuel In
jection 
(MFI
) and i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:80

Page 77 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-61
      
-  Increase engine speed to 1800-2200 RPM.
     
-  Maintain engine speed at 1800-2200 RPM until 
display field 4 changes from "Test OFF" to "Test 
ON." 
     
-  Maintain engine speed at

Page 78 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF Specified value   1800 - 2200 RPM   0.8 - 2.5 ms   0.20 - 2.10 s   B1-S1 OK  
  
---   ---   If not as specified   page 24
-62
 , Continuation  
Pa
ge 78 of 166 Motronic Multi
port Fuel In
jection 
(M

Page 79 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-62
      
Continuation  
      If displayed value is NOT OK (not as specified):  
     
-  Road test to condition oxygen sensor (eliminate 
possible contamination) and repeat test. 
      If displa

Page 80 of 166

AUDI A4 1995 B5 / 1.G AHA Engine Multiport Fuel Injection And Ignition System Manual PDF 24-63
      
Oxygen Sensor (O2S) aging, bank 2, 
sensor 1, checking
 
     
Required special tools and test equipment  
     
VAG1551 or VAG1552 Scan Tool (ST) with 
VAG1551/3 adapter cable 
     
Tes