display AUDI A4 1997 B5 / 1.G ATW Engine Ignition System Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1997, Model line: A4, Model: AUDI A4 1997 B5 / 1.GPages: 59, PDF Size: 0.53 MB
Page 23 of 59

28-22
       Component location   Overview of component 
locations  Page 24
-5   
     
Test sequence  
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select control module for engine electronics 
using "address word" 01   Page 01
-10
 . Engine 
must run at idle. 
Rapid data transfer 
HELP
Select function XX
    
When indicated on display  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" and 
press -Q- button to confirm input. 
Read measurin
g value block 
Q
Enter display group number XXX
    
When indicated on display  
-  Press buttons -0-, -0- and -4- to select "display group number 004" and 
press -Q- button to confirm input. 
Read Measuring Value Block 4  
1 
2 
3 
4
    
Indicated on display  
-  Check specified value for Intake Air Temperature (IAT) sensor in 
display field 4: 
Pa
ge 23 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 24 of 59

28-23
 
  
Display fields  
  
1   2   3   4  
Display group 004: Intake Air Temperature (IAT), engine at idle  
Display   xxxx/min   xx.x volts  
xxx.x C  
xxx.x C  
Indicated  Engine speed 
(RPM)  Battery 
voltage  Coolant 
temperature  Intake Air Temperature (IAT)  
Functional 
range          
-48.0 to 143.0  C  
Specified value   xxxx/min   12.0 to 15.0 V  
80.0 to 110.0 C  
From ambient temperature up to 110
C
1)  
1) If a temperature is indicated which differs greatly from ambient temperature of sensor, check sensor and sensor wires for 
contact resistances and open circuit.  
Pa
ge 24 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 32 of 59

28-31
       Component location   Overview of component 
locations  Page 24
-5   
     
Test requirement: 
     
Engine cold 
     
Test sequence  
     
-  Connect VAS5051 tester or VAG1551 scan tool 
and select control module for engine electronics 
using "address word" 01   Page 01
-10
 . Engine 
must run at idle. 
Rapid data transfer 
HELP
Select function XX
    
When indicated on display  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" and 
press -Q- button to confirm input. 
Read measurin
g value block 
Q
Enter displa
y group number XXX
    
When indicated on display  
-  Press buttons -0-, -0- and -4- to select "display group number 004" and 
press -Q- button to confirm input. 
Read Measuring Value Block 4  
1 
2 
3 
4
    
Indicated on display  
-  Check indication in display field 3.
Pa
ge 32 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 33 of 59

28-32
 
  
Display fields  
  
1   2   3   4  
Display group 004: Coolant temperature, engine at idle  
Display   xxxx/min   xx.x volts  
xxx.x C  
xxx.x C  
Indicated  Engine speed 
(RPM)  Battery 
voltage  Coolant temperature   Intake Air Temperature (IAT)  
Functional 
range       
-48.0 to 143.0 C  
  
Specified value   xxxx/min   12.0 to 15.0 
V  Temperature value must rise 
evenly  From ambient temperature up to 
110 C  
      If display field 3 does not have a realistic 
indication:  
     
-  Disconnect connector at coolant temperature 
sensor. 
     
Coolant temperature sensor with square 
connector: 
    
-  Connect multimeter between terminal 1 and 3 of sensor for resistance 
measurement. 
Pa
ge 33 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 55 of 59

28-51
      
Misfire recognition, checking
 
     
Special tools and equipment  
    
Test sequence  
VAS5051 with VAG5051/1
   orVAG1551 with VAG1551/3A
-  Connect VAS5051 tester or VAG1551 scan tool and select control 
module for engine electronics using "address word" 01   Page 01
-10
 . 
Engine must run at idle. 
Rapid data transfer 
HELP
Select function XX
    
When indicated on display  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" and 
press -Q- button to confirm input. 
Read measurin
g value block 
Q
Enter displa
y group number XXX
    
When indicated on display  
-  Press buttons -0-, -1- and -4- to select "display group number 014" and 
press -Q- button to confirm input. 
Read Measuring Value Block 14  
1 
2 
3 
4
    
When indicated on display  
-  Check misfire recognition. 
Pa
ge 55 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 56 of 59

28-52
 
  
Display fields  
  
1   2   3   4  
Display group 014: Misfire recognition  
Display   xxx /min   xxx %  
xxx  
---  
Indicated  Engine 
speed 
(RPM)  Load  
Number of ignition misfires  
Misfire recognition  
Functional 
range       
  
activated  
locked  
Specified 
value  xxxx/min   15 to 
33 %  0  
activated  
Note      
If the specified value is exceeded: 
Check combustion misfires of 
individual cylinders   Page 28
-53
 
  
If ignition misfires are to be expected due to 
operation conditions (e.g. warm-up, 
deceleration shut-down), misfire recognition 
is deactivated  
      If specified value is obtained:  
     
- 
Press button.Rapid data transfer 
HELP
Select function XX
    
Indicated on display (function selection):  
If specified value is not obtained:  
- Press -C- button.
Pa
ge 56 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 57 of 59

28-53
      
Check misfire recognition of the individual 
cylinders.  Read measuring value block 
Q
Enter display group number XXX
    
When indicated on display  
-  Press buttons -0-, -1- and -5- to select "display group number 015" 
and press -Q- button to confirm input. 
Read Measuring Value Block 15  
1 
2 
3 
4
    
When indicated on display  
-  Check misfire recognition in display fields 1 to 4.
  
Display fields  
  
1   2   3   4  
Display group 015: Misfire recognition of cylinders 1, 2 and 3  
Display  
xxx  
xxx  
xxx  
---  
Indicated  
Number of combustion 
misfires, cylinder 1  Number of combustion 
misfires, cylinder 2  Number of combustion 
misfires, cylinder 3  Misfire 
recognition  
Functional 
range    
  
  
activated  
locked  
Specified 
value  0  
0  
0  
activated  
Note  
If the specified value is exceeded: Evaluation   Page 28
-55
   
---  Pa
ge 57 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 58 of 59

28-54
      
- Press -C- button.Read measuring value block 
Q
Enter display group number XXX
    
When indicated on display  
-  Press buttons -0-, -1- and -6- to select "display group number 016" and 
press -Q- button to confirm input. 
Read Measuring Value Block 16  
1 
2 
3 
4
    
When indicated on display  
-  Check misfire recognition in display fields 1 and 4:
  
Display fields  
  
1   2   3   4  
Display group 016: Misfire recognition of cylinder 4  
Display  
xxx  
  
  
---  
Indicated  
Number of combustion misfires, cylinder 4  
  
  
Misfire recognition  
Functional range  
  
  
  
activated  
locked  
Specified value  
0  
  
  
activated  
Note  
If the specified value is exceeded: Evaluation   Page 28
-55
   
---  
Pa
ge 58 of 59 I
gnition s
ystem, 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.FU06.28.1 
Page 59 of 59

28-55
 Evaluation display group 014, display field 3 and display group 015 and 016, display fields 1, 2 and 3.  Display field: 
3  
Possible cause  
Corrective action  
Larger than 0  
 
spark plug faulty
 spark plug connector faulty
 Ignition coil or power output stage 
faulty - Check spark plugs and ignition wires with connector
- Ignition coils with power output stages. Checking   Page 
28
-4 
  
 
Fuel injector faulty- Check fuel injectors   Page 24
-38
Pa
ge 59 of 59 I
gnition s
ystem, 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.FU06.28.1