HEXA

ELECTRICAL 109 The rain light sensor is connected via LIN ( local interconnect network )-bus to the BCM and BCM controls front wiper and low beam head lamp. The RLS ( Rain light sensor ) measures the ambient luminosity. A combination of the measured luminosity values are sent on the LIN bus. This brightness is provided to the BCM as frequency (Analog data). The rain light sensor controller ECU 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 provided to the rain light sensor controller via LIN communication. LOCATION: It is located at bottom portion of front windscreen glass with connector position in upward direction. CONNECTOR DETAILS: PIN NO DESCRIPTION 1 IGN 2 Ground 3 LIN bus REMOVAL: 1. Remove the rain light sensor cover from the front windscreen. 2. Remove the metal clip from the sensor. 3. Disconnect the electrical connection of rain light sensor. 4. Remove the rain light sensor from the front windscreen. REFITMENT: 1. New rain light sensor without removing its plastic protective cap is fitted with three pole connector facing in upward direction. 2. Remove the plastic protective cap from the sensor. NOTE:  Do not touch the Silgel area.  The transparent protecting cap on the rain light sensor should be held lightly on it two handling surfaces to remove it.