lights AUDI A4 1997 B5 / 1.G AWM Engine Camshaft Timing Control Workshop Manual
Page 5 of 7
15-96
 
    
If the LED does not light up:  
 Electrical Wiring Diagrams, Troubleshooting & Component Locations 
binder   
If the LED lights up:  -  Connect voltage tester VAG 1527 B as follows:Connector  
contact  
Measure to  
1   Engine Ground  
-  Operate starter briefly. 
LED should light up. 
-  Check wiring from contact 1 on connector via fuse to fuel pump relay 
for open circuit: 
-  Correct open circuit, if necessary.
- Check actuation.
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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Page 6 of 7
15-97
      
Checking actuation  
    
-  Connect voltage tester VAG 1527 B to contacts 1 (positive) and 2 of 
connector. 
-  Initiate output Diagnostic Test Mode (DTM) and activate solenoid valve 
for camshaft adjuster. 
Output Diagnostic Test Mode Camshaft timin
g control
    
Display  
If the LED lamp does not flash or if it lights up continuously:  
 Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Fuel Injection & Ignition, 
Engine Code(s): AWM, Repair Group 24
     
LED should flash. 
-  Connect the VAG 1598/31 test box to wiring harness leading to engine 
control module (the engine control module should not be connected): 
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ge 6 of 7 Camshaft timin
g control, checkin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.15.3