AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owner's Guide

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owner's Guide A6 1998 C5 / 2.G AUDI AUDI https://www.carmanualsonline.info/img/6/1062/w960_1062-0.png AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owner's Guide
Trending: sensor, display, wiring, check engine, buttons, wiring diagram, lock

Page 31 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-28
      
Coolant temperature sensor with square 
connector: 
    
Coolant temperature sensor with oval connector:  -  Check the following wire connections for open circuit and short circuit 
to Gr

Page 32 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-29
      
All models 
     
-  Check both wires to each other for short 
circuit. 
     
-  Repair open circuit or short circuit if 
necessary. 
      If no malfunctions are found in wires:

Page 33 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-30
 
  
Voltage supply for control module, 
checking
 
Special Tools and Equipment  
 
VAG1526A
 VAG1594A
 VAG1598/31
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p://127.0.0.1:8080/a

Page 34 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-31
      
Test requirements:  
     
Fuse for Engine Control Module (ECM) OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations binder   
     
Battery voltage at leas

Page 35 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide Module (ECM) travels via connector terminal 1 
and terminal 2. 
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p://127.0.0.1:8080/audi/servlet/Dis
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Page 36 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-32
      
-  Connect multimeter for voltage measurement as 
follows: 
     
VAG1598/31 test box  
Socket  
Measure to  
1   B+  
2   B+  
62   Engine Ground (GND)  
     
 
Specification: approx. b

Page 37 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide      
-  Check wire connections.
     
       Electrical Wiring Diagrams, Troubleshooting & 
Component Locations binder   
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11/23/2002 htt
p://127.0.0.1:8080

Page 38 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-33
      
Knock recognition control stop, 
checking
 
      The following tests must be performed when a 
DTC is stored that relates to "knock recognition 
control limit reached".  
  
Possible cau

Page 39 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-34
      
Check ignition angle retardation of the 
individual cylinders  
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select the control module for engine 
electronics using "address

Page 40 of 65

AUDI A6 1998 C5 / 2.G ATQ Engine Ignition System Checking Owners Guide 28-35
 
  
Display fields  
  
1   2   3   4  
Display group 020: Ignition -knock control in driving operation  
Display  
xx.x  KW  
xx.x  KW  
xx.x  KW  
xx.x  KW  
Indicated  
Ignition angle 
retar
Trending: checking oil, check engine, display, lock, wiring, buttons, sensor