1999 AUDI A4 ignition

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Page 15 of 17

AUDI A4 1999 B5 / 1.G AEB Engine Turbocharger Boost Control And Checking 24-134
      
Checking wiring  
     
-  Disconnect harness connector from Barometric 
Pressure (BARO) sensor. 
     
-  Switch ignition on.
    
If voltage is NOT OK:  -  Connect multimeter US 1119 (