sensor AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual

AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1050/w960_1050-0.png AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-139
 
     
Electronic Engine Power 
Control (EPC), checking 
     
Function of Engine Power Control (EPC)
 
      With the electronic throttle, the throttle valve is 
not operated by a cable conne

Page 2 of 39

AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-140
       With the engine is not running and the ignition 
switched on, the ECM operates the throttle valve 
positioner in exact accordance with the signals 
from the accelerator position sensors.

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-141
       Under certain engine load conditions there is 
also a significant reduction in harmful emissions 
and noticeably improved fuel consumption.  
      The Engine Control Module (ECM) can pr

Page 9 of 39

AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-145
      
Throttle Valve Control Module -J338, 
checking
 
      The throttle valve control module housing 
contains the following components:  
     
CAUTION! 
     
The housing should NOT be ope

Page 11 of 39

AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-146
      
Throttle valve control module, 
adaptation
 
      The adaptation process enables the Engine 
Control Module (ECM) to learn the different 
positions of the throttle valve with the igniti

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-147
       The learning process (adaptation process) is 
carried out:  
     
By selecting "Basic Setting" (function 04), 
Display Group 060 with the ignition switched 
on. 
     Automatically if t

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-150
       When the -Q- button is pressed the throttle valve 
positioner will be switched mechanically.  
      In this condition the throttle valve is pulled into an 
"emergency running" or defaul

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-151
      
-  Check specification for throttle valve control 
module (display fields 4). 
  
Display fields  
  
1   2   3   4  
Display Group 060: Adaptation of throttle valve control module with

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-153
      
Angle sensor -1- for throttle drive 
(power accelerator actuation) -G187- 
and angle sensor -2- for throttle drive 
(power accelerator actuation) -G188, 
checking
 
      The angle senso

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AUDI A4 1996 B5 / 1.G APB Engine Electronic Engine Power Control Checking Workshop Manual 24-154
 Note: 
The engine control module converts the voltage readings from the angle sensors into percentages of 5 V and displays them as percentages. (A signal wire voltage of 5 V is equivalent to 1
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