engine AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual A6 1995 C5 / 2.G AUDI AUDI https://www.carmanualsonline.info/img/6/1077/w960_1077-0.png AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual

Page 1 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-1
 
     
Ignition system, checking 
     
General notes on ignition system
 
     
Note:  
     
The battery should only be disconnected and 
reconnected when the ignition is turned off, 
since ot

Page 2 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-2
      
Safety precautions
 
      To reduce the risk of personal injury and/or 
damage to the fuel injection and ignition system, 
always observe the following:  
     
Do not touch or disconnect

Page 3 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-3
 Technical data
 
Engine identification  
ATW (1.8 L / 5V/ 110 kW engine)  
Idle speed  
Engine speed cannot be adjusted, it is 
regulated by idle stabilization  Front Wheel Drive (FWD): 740 to 8

Page 5 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-5
      
Test sequence  
     
Note:  
     The ignition coil and power output stage are 
combined in one complete component. 
    
Recognize a non-functional or misfiring cylinder as follows:  
If

Page 8 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-7
 
    
If LED does not light up:  
 Electrical Wiring Diagrams, Troubleshooting & Component Locations   
If LED lights up:  
Checking voltage supply  
Test requirement: 
 Electrical Wiring Diagra

Page 9 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-8
 
    
If specified value is obtained:  
If specified value is not obtained:  -  Connect multimeter for voltage measurement as follows:Harness connector  
Terminal  
Measure to  
1   Engine Groun

Page 11 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-10
      
-  Perform following tests marked with dots:
    
Checking activation of power output stages  
Note:  
Fuel must not be injected during the test to avoid damaging catalytic 
converter. Co

Page 12 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-11
 
    
-  Disconnect 4-pin harness connector -1- at ignition coil -2-.
    
If specified values are not obtained:  -  Connect VAG1527B voltage tester to connector terminals 2 and 3.
-  Operate s

Page 14 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-13
 
  
Motronic Engine Control Module (ECM) 
power supply relay -J271-, checking
 
Special tools and equipment  
 
VAG1526A
 VAG1594A
 VAG1598/31
Pa
ge 14 of 59 I
gnition s
ystem, checkin
g
11/21/

Page 15 of 59

AUDI A6 1995 C5 / 2.G ATW Engine Ignition System Workshop Manual 28-14
      
Note:  
     The motronic Engine Control Module (ECM) 
power supply relay -J271- supplies voltage to the 
ignition coils with power output stages and the 
Engine Control Module (ECM) at p
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