AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1077/w960_1077-0.png AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual
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Page 41 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual      
-  Check wire connections.
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations   
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Page 42 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-39
      
-  Connect multimeter for voltage measurement as 
follows: 
     
VAG1598/31 test box  
Socket  
Measure to  
121
 1)
  
Engine Ground (GND)  
     
1) The motronic Engine Control Module

Page 43 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual power supply relay -J271-   Page 28
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Page 44 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-40
      
Knock recognition control stop, 
checking
 
      If a DTC is stored regarding "Knock control 
regulation limit reached":  
     
-  Perform following tests:
  
Possible cause  
Correctiv

Page 45 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-41
 
  
Knock sensors, checking
 
Special tools and equipment  
 
VAG1526A
 VAG1594A
 VAG1598/31
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Page 46 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-42
       Component location   Overview of component 
locations  Page 24
-5   
     
Note:  
     
Knock Sensor (KS) 1 -G61- and Knock Sensor 
(KS) 2 -G66- themselves cannot be electrically 
tested

Page 47 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-43
 
    
Check wires from knock sensors to Engine Control Module (ECM).   -  Check all three terminals at knock sensor connector for short circuit to 
each other (terminal 1+2, 1+3, 2+3). 
 
Speci

Page 48 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-44
 
    
Knock Sensor (KS) 2 -G66- (cylinder 3/4) 
Harness connector  
Terminal  
VAG1598/31 test box  
Socket  
1 (signal)   107  
2 (Ground -GND-)   99  
3 (shielding)   108  
-  Repair open cir

Page 49 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-45
 
  
Camshaft Position (CMP) sensor 2 -G40-, 
checking
 
Special tools and equipment  
 
VAG1526A
 VAG1527B
 VAG1594A
 VAG1598/31
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Page 50 of 59

AUDI A4 1996 B5 / 1.G ATW Engine Ignition System Service Manual 28-46
       Component location   Overview of component 
locations  Page 24
-5   
      The Camshaft Position (CMP) sensor provides 
the ignition position for cylinder 1.  
      For failure, knock co
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