check engine AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1060/w960_1060-0.png AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual

Page 1 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-134
 
     
Electronic engine power 
control (E-Gas), checking 
     
E-Gas system, function
 
      For E-Gas, the throttle valve is not operated by a 
cable from the accelerator pedal. There is n

Page 3 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-135
       With engine running (under load), the ECM can 
open or close the throttle valve independently of 
the sensor for accelerator pedal position.  
      This means, for example, that the thr

Page 4 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-136
      
Electronic Power Control (EPC) warning 
lamp -K132- in instrument cluster, 
significance
 
      "EPC" is an abbreviation and stands for 
Electronic Power Control (E-gas).  
    
Install

Page 6 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 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, th

Page 8 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 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 Diagr

Page 9 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 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

Page 10 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual Locations binder   
     
-  Repair short circuit if necessary.
      If wire connection is OK:  
     
-  Replace Engine Control Module (ECM)   Page 
24
-21
 . 
Pa
ge 10 of 41 Electronic en
gine 
pow

Page 11 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-141
      
Throttle valve control module -J338-, 
checking
 
      The following components are located in the 
housing for the throttle valve control module:  
     
Throttle drive (power accelera

Page 13 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-142
      
Throttle valve control module, adapting
 
      The adaptation teaches the Engine Control 
Module (ECM) various positions of the throttle 
valve when the ignition is on and the engine is

Page 14 of 41

AUDI A4 1995 B5 / 1.G ATQ Engine Electronic Engine Power Control Checking Workshop Manual 24-143
      
Note:  
     Engine will not start during automatic adaptation. 
     
Special Tools and Equipment  
    
Requirements 
VAS5051 with VAG5051/1
   orVAG1551 with VAG1551/3BNo DTCs in DTC
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