check engine light AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual

AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/956/w960_956-0.png AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual

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AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual 26-31
 
  
 
To prevent unnecessary heating, the secondary 
air is diverted past the turbocharger -7-. For 
this, the charge air pressureregulation pressure 
unit opens the charge air pressure valve.

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AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual 26-35
      
Checking voltage supply  
     
-  Disconnect harness connector from Secondary 
Air Injection (AIR) solenoid valve -N112-. 
    
If LED does not light:  -  Connect VAG1527B voltage tester

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AUDI A4 1995 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual 26-44
       If LED does not light:  
     
-  Perform the following tests marked with dots:
     
Check wire connection from harness 
connector at Secondary Air Injection (AIR) 
pump motor -V101- to