The rain light sensor is connected via LIN (local interconnect network)-bus to BCM. The BCM controls the wiper motor in automatic mode according to the commands received from the rain sensor. The RLS (Rain light sensor) measures the ambient luminosity. A combination of the measured luminosity values are send on the LIN bus. This brightness is provide to the BCM as frequency (Analog data). The BCM includes an algorithm to control the headlamps status of the vehicle. Combi-switch position, rain sensor sensitivity and park position of the wiper motor information is provide to the RLS via LIN communication. LOCATION: It is located at top portion of front windscreen glass with connector position in upward direction CONNECTOR DETAILS: REMOVAL: 1. Remove the rain light sensor big & small covers from the front windscreen. 2. Disconnect the electrical connection of IRVM. PIN DETAILS 1 VCC CRLT 2 GND 3 LIN - Bus ELECLTRICAL 275
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