engine AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/952/w960_952-0.png AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual

Page 1 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-46
 
     
Charge air system with 
turbocharger (engine code 
ATW) 
     
Checking mechanical recirculation valve  
     
Notes:  
     
The mechanical recirculation valve is located in 
front of t

Page 4 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-49
      
Note:  
     The recirculating valve for turbocharger -N249- 
and wire connections are monitored by the 
Engine Control Module (ECM). 
     
-  Connect VAS5051 tester or VAG1551 scan tool

Page 7 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-51
       If the specified value is attained:  
     
-  Check voltage supply
     
Checking voltage supply  
     
Note:  
     Voltage is supplied to the recirculation valve via 
the Fuel Pump (F

Page 10 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-53
       If LED does not blink or if it remains constantly 
lit:  
     
-  Connect VAG1598/31 test box at wiring harness 
to ECM, do not connect ECM: 
     
       Repair Manual, 1.8 Liter 4-Cyl.

Page 16 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-58
      
Note:  
     The height of the charge air pressure should be 
determined using the VAG1397/A turbocharger 
test tool, the VAS5051 tester or the VAG1551 
Scan Tool is used to determine whe

Page 17 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-59
 charge air pressure regulation Diagnostic Trouble Codes (DTC)  Diagnostic Trouble 
Code (DTC)  Charge air pressure  
Possible causes  
Charge air pressure 
too low   
Measured value below 
1.45

Page 19 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-61
      
Note:  
     The wastegate bypass regulator valve -N75- and 
wire connections are monitored by the Engine 
Control Module (ECM). 
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and

Page 22 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-63
       If specified value is not obtained:  
     
-  Replace wastegate bypass regulator valve -N75-
. 
      If the specified value is met:  
     
Checking voltage supply  
    
If LED does no

Page 24 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-65
 
    
If wire connection is OK:  
 Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Fuel Injection & Ignition, 
Repair Group 24    -  Check the following wire connection for open circuit and short circ

Page 26 of 42

AUDI A4 1995 B5 / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-67
      
Note:  
     The charge air pressure sensor -G31- and wire 
connections are monitored by the Engine Control 
Module (ECM). 
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and selec
Page:   1-10 11-20 next >