Lamp, roof lighting, front (50F), CV
 
  
 
 
  
   
    
     |  | Lamp, roof lighting, front (50F), CV | 
   
  
  
   
   
    
    
    
    
    
   
   
    
   
   
    
     Front roof light bulb (50F)
    
    
    
    
    
    
    
    
   
   
    
   
   
    Is used for general roof lighting.
    
    
    
    
    
    
    
   
   
    
   
   
    The roof light is switched on either manually or automatically (the doors control the switching on/off). A lamp and a switch are built into the roof lighting unit. The switch (53) is a toggle switch with just one position. The inner lighting is alternately switched on/off with each subsequent press of the button.
    
    
    
    
    
    
    
   
   
    
   
   
    The lamps are grounded with PWM from BCM. Power is supplied to the lamps from a relay controlled by the BCM. The BCM senses the supply to determine whether the relay is activated.
    
    
    
     
      
      
      
     
     
      
       | Pin No. 
 | Signal type 
 | Description 
 | 
      
       | 685F pin 5 | Ground | The lamp (50F) is grounded to the vehicle body. | 
      
       | 685F pin 14 | Ground | The lamps are grounded with the PCM from the BCM pin A18 (K78). | 
      
       | 685F pin 15 | Power supply | From BCM pin A19 (K78) | 
     
    
    
    
    
      
    
    
   
   
  
   