Kia Sedona: Auto Light Sensor Repair procedures
Third generation YP (2014-2024) / Kia Sedona YP Service Manual / Body Electrical System / Auto Lighting Control System / Auto Light Sensor Repair procedures
| Inspection |
Check if the auto light control operates like a timing chart
shown below. Tail lamp output and head lamp (Low) output is controlled
based on the auto light sensor''s input (illumination intensity) when
the Auto Light Switch in Multi-Function Switch is turned ON, and the
vehicle is in IGN1 or IGN2 ON Mode. If IGN1 = ON, BCM detects this
voltage, and if the voltage exceeds rated voltage, then auto light
failure occurs. (below 4V or above 6V)
Failure Occurrence: If auto light failure occurs, the head
lamp must be turned ON regardless of sun light level. This is to prevent
the head lamp from being turned OFF in case of auto light failure
during night time. |
In the state of IGN1 ON, when multi function switch module
detects auto light switch on, tail lamp relay output and head lamp low
relay output are controlled according to auto light sensor''s input. The
auto light control does not work if the pin sunlight supply (5V
regulated power from Ignition 1 power to sunlight sensor) is in short
circuit with the ground. During IGN1 ON, the BCM monitors the range of
this supply and alerts the failure as soon as the supply’s voltage is
out of range. When this failure occurs and persists, the head lamp must
be turned on regardless of the sunlight level detected by the
sensor.This is designed to prevent any head lamp cut off when the
failure occurs during the night.
| Removal |
| 1. |
Disconnect the negative (-) battery terminal. |
| 2. |
Remove the photo & auto light sensor (A) from crash pad upper side by using screw (-) driver. |
| 3. |
Disconnect the photo & auto light sensor connector (B).
|
| Installation |
| 1. |
Connect the auto light connector. |
| 2. |
Install the auto light sensor. |
| 3. |
Connect the negative (-) battery terminal.
|
Description and Operation
Description
It''s a system that uses illumination sensor to automatically
turn ON the tail lamp and head lamp based on the change in surrounding
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