AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide A6 1995 C5 / 2.G AUDI AUDI https://www.carmanualsonline.info/img/6/958/w960_958-0.png AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide

Page 11 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-10
      
Charge air pressure control (via load 
signal), checking
 
     
WARNING! 
     
Always use a second technician to take 
measurements via the VAG1397A 
turbocharger tester when test-drivi

Page 12 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide VAG - ON BOARD DIAGNOSTIC 
HELP
1 - Rapid data transfer2 - Blink code output
    
Indicated on display
1)  
1) Operating modes 1 and 2 are displayed alternately  
Note:  
If nothing appears on display

Page 13 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-11
      
-  Press button 1 to select "Rapid data transfer" 
operating mode 1. 
     
- Start engine.Rapid data transfer 
HELP
Select function XX
    
Indicated on display  
Rapid data transfer 
Q

Page 14 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 1 
2 
3 
4
Interpreting values 1-4 in each display field   Page 21
-12
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Page 15 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-12
      
Interpreting display fields  Read Measuring Value Block 114 1 
2 
3 
4
    
Indicated on display:  
Specification 
Deviation between display field 2 and 3: 0.3 ms (max.)  
Note:  
If the

Page 16 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-13
 Diagnostic Trouble Codes (DTC) for charge air pressure regulation  Diagnostic 
Trouble Code 
(DTC)  VAG1397A Display  
VAG1551 Display  
Possible causes  
Charge air 
pressure too 
low   
Measu

Page 17 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-14
      
Charge pressure leak test with VAG 
1687
 
     
Intake system, checking for leaks using VAG 
1687 Diagnostic Tool  
      Diagnostic trouble codes (DTCs) related to fuel 
trim, charge pr

Page 18 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide The shop air supply line will later be attached to the inlet of VAG 1687.  -  Close valve -3- before gauge.
-  Close valve -4- after gauge.
-  Remove female fitting from tester (arrow) and install an

Page 19 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 21-15
      
WARNING! 
     
Use only approved air fittings to adapt shop 
air supply line to VAG 1687 tester. 
     
Special tool VAG 1687/1 pressure adapter, 
installing (1.8L Turbo)  
     
-  Sepa

Page 20 of 50

AUDI A6 1995 C5 / 2.G AEB ATW Engines Turbocharger System User Guide 1687/1 special tool kit. 
Pa
ge 20 of 50 Turbochar
ger s
ystem
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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pair&id=AUDI.B5.GE02.21.1
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