Speedometer (MIU 1)
 
  
 
 
  
  
   
   
    
   
  
  
  
   The car is equipped with an electronic speedometer. The ABS control module
sends speed information continuously to pin 7 (14p). This information is represented by a
square wave which varies periodically between 8 V and 0 V, 29 times per wheel revolution.
When the wheels are stationary, the voltage may be
   
    either
   
   8 V
or 0 V. This information controls the speedometer, odometer and trip odometer.