Rain light sensor
Rain sense wipers do not operate:
1. Visual Inspection-->
Check if the sensor is visually OK. (all the pins are OK)
Check that the Connector is NOT loose (Sensor must get a voltage from 9V
to 16V)
2. Functional Checks
Rain-->
Steering column switch is in auto mode (sensor is active)
it is necessary to splash water on the sensitive surface of the sensor to trigger
wipes. check the same for different sensitivities
When the rain sensitivity is increased (for example from level 0 to level 1),
as an acknowledgement a single wipe is seen. (This is not a phantom wipe) and this
single wipe is not seen when the rain sensitivity is decreased (from higher level to
lower level)
Light-->
Steering column switch is in auto mode (sensor is active)
block the light coming on the sensor from outside of the vehicle (use a opaque
object), the head lamps should be activated
3. If the sensor seems functional, it is ideal to remove the silicon gel pad from the
sensor, replace it with the new silicon gel pad instead of replacing the whole sensor.
When servicing the LRSM please replace the silicon gel pad with a new
silicon gel pad (PN 68224945AA) instead of replacing the whole sensor.
