wiring AUDI A4 1998 B5 / 1.G AWM Engine Charge Pressure Leak Test User Guide
Page 33 of 34
21-42
 
    
If specified value is attained:  
Checking signal wire   -  Check for open circuit and short to positive or Ground in following 
wiring connections: Connector  
contact  
Test box VAG 1598/31  
1   108  
3   98  
-  Repair any open/short circuit as necessary.
-  Attach connector from charge air pressure sensor.
-  Attach multimeter for voltage test to socket 101 and socket 108 of test 
box. 
-  Start engine and run at idling speed.
Specified value: approx. 1.90 V 
-  Bring engine to speed by spontaneous acceleration.Specified value: 2.00...3.00 V 
Pa
ge 33 of 34 Char
ge pressure leak test with VAG 1687
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.2 
Page 34 of 34
21-43
       If specified values are not attained:  
    
If the wiring is OK:  -  Check for open circuit and short to positive or Ground in following 
wiring connection: Connector  
contact  
Test box VAG 1598/31  
4   101  
-  Repair any open/short circuit as necessary.
-  Replace Charge Air Pressure sensor -G31-.
Pa
ge 34 of 34 Char
ge pressure leak test with VAG 1687
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.2