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

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 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 Workshop Manual
91 100 129

Page 1 of 42

AUDI A3 1995 8L / 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 2 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-47
      
Test sequence  
    
If recirculation valve does not open or close or valve plate does not seal 
correctly when valve is closed:  -  Attach VAG1390 vacuum pump to recirculation valve.
-

Page 3 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-48
 
  
Recirculating valve for turbocharger -
N249-, checking
 
Special tools and equipment  
 
VAG1526A
 VAG1527B
 VAG1594A
 VAG1598/31
 VAS5051 with VAG5051/1
- or 
 VAG1551 with VAG1551/3A
Pa
g

Page 4 of 42

AUDI A3 1995 8L / 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 5 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-50
      
-  Initiate output Diagnostic Test Mode (DTM) and 
activate the recirculating valve for turbocharger -
N249-: 
     
       Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Fuel 
Injection & Igni

Page 6 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual If specified value is not obtained:  
-  Replace recirculating valve for turbocharger -N249-.
Pa
ge 6 of 42 Char
ge air s
ystem with turbochar
ger 
(en
gine code ATW
)
11/18/2002 htt
p://127.0.0.1:808

Page 7 of 42

AUDI A3 1995 8L / 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 8 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual 21-52
       If LED does not light:  
     
-  Check wire connection from terminal 1 to Fuel 
Pump (FP) relay via fuse for an open circuit": 
     
       Electrical Wiring Diagrams, Troubleshooting &

Page 9 of 42

AUDI A3 1995 8L / 1.G AEB ATW Engines Charge Air System With Turbocharger Workshop Manual  Repair Manual, 1.8 Liter 4-Cyl. 5V Turbo Fuel Injection & Ignition, 
Repair Group 01    recirculating valve for turbocharger -N249-:  
LED must blink.
Pa
ge 9 of 42 Char
ge air s
ystem with turbochar

Page 10 of 42

AUDI A3 1995 8L / 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:   1-10 11-20 21-30 31-40 41-50 ... 50 next >