wiring AUDI A8 1995 D2 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1995, Model line: A8, Model: AUDI A8 1995 D2 / 1.GPages: 41, PDF Size: 0.21 MB
Page 6 of 41

24-138
      
Function test of warning lamp  
     
-  Switch ignition on.
     
 
Engine Control Module (ECM) switches EPC 
lamp on. 
     
- Start engine. 
     
 Shortly after engine is started, the EPC 
warning lamp will go out if there are not 
malfunctions stored in DTC memory that 
relate to the E-gas system 
     
A- Fault light for power accelerator activation 
-K132- does not light up  
     
-  Connect VAG1598/31 test box at wiring harness 
to ECM, do not connect ECM   Page 24
-17
 . 
     
-  Bridge sockets 1 and 48 of test box.
     
-  Switch ignition on.
     
 
Warning lamp must light up.
      If warning lamp does not light up:  
Pa
ge 6 of 41 Electronic en
gine 
power control 
(E-Gas
), checkin
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11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.FU05.24.5 
Page 8 of 41

24-139
      
-  Check the following wire connection for open 
circuit and short circuit to B+: 
     
Test box  
VAG1598/31  
Socket  
Instrument cluster  
  
Terminal  
48    Electrical Wiring Diagrams, 
Troubleshooting & Component 
Locations binder   
     
-  Repair open circuit or short circuit if 
necessary. 
      If wire connection is OK:  
     
-  Replace Engine Control Module (ECM)   Page 
24
-21
 . 
Pa
ge 8 of 41 Electronic en
gine 
power control 
(E-Gas
), checkin
g
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.24.5 
Page 9 of 41

24-140
      
B- Fault light for power accelerator activation 
-K132- lights up constantly  
     
-  Check DTC memory of Engine Control Module 
(ECM). 
      If no DTCs are stored:  
     
-  Connect VAG1598/31 test box at wiring harness 
to ECM, do not connect ECM   Page 24
-17
 . 
     
- Remove instrument cluster:
     
       Repair Manual, Electrical Equipment, Repair 
Group 90, Instrument cluster, removing and installing
   
     
-  Check the following wire connection for short 
circuit to Ground (GND): 
     
Test box  
VAG1598/31  
Socket  
Instrument cluster  
  
Terminal  
48    Electrical Wiring Diagrams, 
Troubleshooting & Component 
Pa
ge 9 of 41 Electronic en
gine 
power control 
(E-Gas
), checkin
g
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.24.5 
Page 27 of 41

24-153
      
Checking wire connections  
    
If no malfunctions are found in wires:  -  Pull connector (2) off throttle valve control module.
-  Connect VAG1598/31 test box at wiring harness to ECM, do not 
connect ECM   Page 24
-17
 . 
-  Check the following wire connections for open circuit and short circuit 
to Ground (GND) and B+: Harness connector  
Terminal  
VAG1598/31 test box  
Socket  
1   92  
2   83  
3   117  
4   84  
5   118  
6   91  
-  Repair open circuit or short circuit if necessary.
-  Replace throttle valve control module.
Pa
ge 27 of 41 Electronic en
gine 
power control 
(E-Gas
), checkin
g
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.24.5 
Page 35 of 41

24-159
      
Checking wire connections  
     
-  Connect VAG1598/31 test box at wiring harness 
to ECM, do not connect ECM   Page 24
-17
 . 
    
-  Check the following wire connection for open circuit and short circuit to 
Ground (GND) and B+: Harness connector  
Terminal  
VAG1598/31 test box  
Socket  
1   72  
2   73  
3   36  
4   35  
5   33  
6   34  
-  Repair open circuit or short circuit if necessary.
Pa
ge 35 of 41 Electronic en
gine 
power control 
(E-Gas
), checkin
g
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU05.24.5