AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owner's Manual

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owner's Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/965/w960_965-0.png AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owner's Manual

Page 21 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-18
       If display field 4 indicates a correction factor <0 
%, intake air is too hot or the sensor for intake air 
temperature is faulty.  
     
       Repair Manual, 2.7 Liter V6 5V BiTurbo Fu

Page 22 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual measuring value blocks:  
     
-  Check the charge air pressure sensor -G31-.
Pa
ge 22 of 37 Char
ge air s
ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto

Page 23 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-19
 
  
Recirculating valve for turbocharger -
N249-, checking
 
Special tools and equipment  
 
VAG 1526A
 VAG 1527B
 VAG 1594A
 VAG 1598/31
 VAS 5051 with VAG 5051/1
- or 
 VAG 1551 with VAG 1551

Page 24 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-20
      
Note:  
     The recirculating valve for turbocharger -N249 
and wire connections are monitored by the 
Engine Control Module (ECM). 
     
-  Connect VAS 5051 tester or VAG 1551 scan 
to

Page 25 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual remains connected. 
     
-  Attach assisting hose to one connection of 
valve. 
Pa
ge 25 of 37 Char
ge air s
ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Go

Page 26 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-21
      
-  Initiate output Diagnostic Test Mode (DTM) and 
activate recirculating valve for turbocharger -
N249-. 
     
       Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel 
Injection & Ignition,

Page 27 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-22
      
Checking internal resistance  
     
-  Disconnect connector at valve.
    
If specified value is not obtained:  
If the specified value is met:  -  Connect multimeter at valve for resist

Page 28 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-23
      
Checking voltage supply  
     
Note:  
     Voltage is supplied to the recirculation valve via 
the Fuel Pump (FP) relay. 
     
Test requirement: 
     
Fuse for recirculation valve OK

Page 29 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-24
       If LED does not light:  
     
-  Check wire connection from terminal 1 to Fuel 
Pump (FP) relay via fuse for open circuit. 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Co

Page 30 of 37

AUDI A4 1995 B5 / 1.G APB Engine Charge Air System With Turbocharger Owners Manual 21-25
      
Checking activation  
    
 Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition, 
Engine Code(s): APB, Repair Group 01
   
If LED does not blink or if it remains constantly l
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