check engine light AUDI A4 2000 B5 / 1.G Brakes Basic Setting 04 Workshop Manual
Page 45 of 64
01-281
      
Notes:  
     
The vehicle must be raised until all wheels are 
free to turn. Ask a colleague to help. The 
colleague will have to check the wheels to 
determine whether they turn freely. 
     You can stop the test sequence at any time by 
pressing the -C- button. 
     To avoid overloading the components being 
checked, they are actuated during the test 
sequence for a period of 60 (or 90) seconds. 
The actuator test will be terminated if the "  
button" is not pressed within this period. 
     
The ABS warning light and the red "brake 
system malfunction" symbol blink during the 
test. 
     Pressing the brake pedal repeatedly this 
relieves the vacuum in the brake booster. For 
this reason, the brake pedal must be pressed 
harder in order to achieve the same braking 
effect. Your work will be easier if you run the 
engine briefly. This will build up vacuum in the 
brake booster again. 
Pa
ge 45 of 64 Basic settin
g (scan tool function 04
)
11/20/2002 htt
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