AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual

AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1024/w960_1024-0.png AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual
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AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual 24-37
 
     
Idle Air Control (IAC) valve, 
checking 
     
Note:  
     To functionally check the idle speed control 
system   "Read Measuring Value Block" 
function 08, display groups 004 through 0

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AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual Note:  
At room temperature, the resistance value will be lower. The resistance 
value will be higher if the Idle Air Control (IAC) valve is measured at 
under-hood operating temperatures. 
Pa
ge 2 of

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AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual 24-38
      
Checking mechanical function  
     
-  Remove Idle Air Control (IAC) valve.
    
CAUTION! 
Do not check for ease of movement by prying on the rotary slide 
using a screwdriver or other t

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AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual 24-39
      
Checking Idle Air Control (IAC) valve 
triggering  
     
Idle Air Control (IAC) valve electrically OK 
     
-  Slide up boot on Idle Air Control (IAC) valve 
connector. 
     
-  Use sc

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AUDI A4 1995 B5 / 1.G AFC Engine Idle Air Control Valve Checking Workshop Manual 24-40
 
    
If the wiring is OK but triggering still does NOT occur:  
If the triggering signal and the wiring are OK and the valve still does not 
react:  -  Check wiring between harness connector t
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