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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.