Switch, luggage compartment illumination
 
  
 
 
  
   
    
     |  | Switch, luggage compartment illumination | 
   
  
  
  
    
  
  
  
  
  
  
  
  
   
  
  
   The tailgate sensor is a contact integrated into the lock mechanism on the tailgate which is also used to control the luggage compartment lighting. The contact is connected to pin 35 of the control module.
   
   
   
   
   
   
   
  
  
   
  
  
   A pulse width-modulated (approx. 3.5%) voltage is supplied continuously from the control module via a 1 kohm pull-up in TWICE to the switch. From this voltage, the control module can detect whether the tailgate is opened when the alarm is armed by testing the voltage at the input concerned.