Fuel pump, parking heater (323a)
| Fuel pump, parking heater (323a) | 
| Location | 
Fuel pump motor, parking heater (323a)
| Main task | 
Supplies fuel to auxiliary heater when criterion for "auxiliary heater on" is fulfilled.
| Type | 
PWM-regulated piston pump that works with various piston strokes depending on fuel need. Upon heater start - 2 Hz. At power need 2400 W, 3 Hz and at power need 5000 W, 5.9 Hz.
| Connection | 
| Pin no. | Signal type | Description | 
| 
        
         1
        
         | 
       
        
         PWM pulse
        
         | 
       
        
         PWM feed from parking heater.
        
         | 
      
| 
        
         2
        
         | 
       
        
         Ground
        
         | 
       
        
         Connected to G5.
        
         | 
      
