engine AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual A4 1997 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/958/w960_958-0.png AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual

Page 7 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-6
      
Test conditions:  
     
Check DTC memory Repair Manual, 1.8 
Liter 4-Cyl. 5V Turbo Fuel Injection & 
Ignition, Repair Group 01 
     Perform output diagnostic test mode 
(function 03)

Page 9 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-8
      
Vehicles with manual transmission: 
     
-  Accelerate vehicle in 3rd gear at full throttle from 
2000 RPM and watch tachometer. 
    
Vehicles with automatic transmission:  -  At 3000 RP

Page 10 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-9
      
Note:  
     For vehicles with automatic transmission the 
charge air pressure test may not always provide 
a definitive reading of proper charge air pressure 
regulation. If pressure read

Page 13 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 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 15 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 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 A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 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 19 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 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 23 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-17
      
Special tool LKI9210 (Evaporative system 
leak detector), preliminary set-up  
     
-  Connect smoke generator leads to vehicle 
battery. 
    
With system filled with smoke:  
Special t

Page 24 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-18
      
Special tool VAG 1687, connecting to 
pressure adapter VAG 1687/1 (2.7L BiTurbo)  
      For illustrations purposes VAG is shown lying in 
the engine compartment. In practice the tool 
sh

Page 25 of 50

AUDI A4 1997 B5 / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-19
      
Performing pressure test:  
    
-  With outlet hose -1- of VAG 1687 connected to air pressure adapter:
-  Attach shop air supply line to previously installed male fitting (   Page 
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