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Door contact switches, location/purpose/design/function - GF82.20-P-4102A

MODEL 202 as of 1.6.97, 208, 210.081 /281, 210 (except 210.081 /281) as of 1.3.97 

REFER TO BASIC KNOWLEDGE Location except model 208.4 (convertible) GF82.20-P-0002-01B 
    Model 208.4 (convertible) GF82.20-P-0002-01KA 
  Purpose The status of the vehicle doors (open, closed) is indicated as an electrical signal by the door contact switches.  
  Design The door contacts are designed as normally closed switches. (Switching contacts are open when doors are closed).  
  Function If the door is open, the door contact switch then connects an input of the pneumatic system equipment (PSE), combined functions (A37)  to ground. The PSE transmits the status as a CAN message.