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Location/purpose/design/function of rain sensor - GF82.30-P-4103A

MODEL 202 as of 1.6.97, 208, 210.081 /281, 210 (except 210.081 /281) as of 1.3.97 with CODE (345a) Rain sensor 

REFER TO BASIC KNOWLEDGE Location GF82.30-P-0005-01A 
  Purpose  
The rain sensor measures the quantity of moisture on the windshield and controls the intermittent time for the wiper.
  Design  
The rain sensor consists of an IR transmitter and receiver and an electronic circuit for evaluation and communication via the CAN bus.
REFER TO BASIC KNOWLEDGE Function GF82.30-P-4103-02A