AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide A3 1995 8L / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/952/w960_952-0.png AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide

Page 11 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 21-54
      
Turbocharger and charge air pressure 
regulator valve, checking
 
     
Special tools and equipment  
    
VAG1397A 
    
VAS5051 with VAG5051/1
   orVAG1551 with VAG1551/3A
Pa
ge 11 of 4

Page 12 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 21-55
      
Test requirements  
     
All hoses and wires have been checked for 
proper seating and seal. 
     DTC memory checked 
     
       Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Fuel 
Injecti

Page 13 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide     
-  Using T-piece connect test hose from VAG1397A Turbocharger Tester 
between intake manifold and fuel pressure regulator. 
-  Guide test hose over rear corner of hood, through passenger side 
wi

Page 14 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 21-56
 
    
Notes:  -  Turn turbocharger tester on and select measuring range -I- (absolute 
pressure). 
-  Connect test hose to connection barb -I-.
Hoses must be properly connected and there must b

Page 15 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 21-57
 
Rapid data transferSelect function XX
    
When indicated on display:  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" and 
press -Q- button to confirm input. 
Read Measur

Page 16 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 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 A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 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 18 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 21-60
 
  
Wastegate bypass regulator valve -N75-, 
checking
 
Special tools and equipment  
 
VAG1526A
 VAG1527B
 VAG1594A
 VAG1598/31
 VAS5051 with VAG5051/1
- or 
 VAG1551 with VAG1551/3A
Pa
ge 18

Page 19 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide 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 20 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger User Guide valve. 
Pa
ge 20 of 42 Char
ge air s
ystem with turbochar
ger 
(en
gine code ATW
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.21.3
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