Kia Cadenza YG: Auto Lighting Control System / Auto Light Sensor Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Body Electrical System / Auto Lighting Control System / Auto Light Sensor Repair procedures

Inspection
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 doesn''t work if the pin sunlight supply (5V regulated power from Ignition 1 power to sunlight sensor) is in short circuit with the ground.
If IGN1 ON, The BCM monitors the range of this supply and raises up a failure as soon as the supply’s voltage is out of range. Then this failure occurs and as long as this is present, the head lamp must be turned on without taking care about the sunlight level provided 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 auto light sensor (A) from crash pad upper side by using screw (-) driver.

3.
Remove the auto light sensor connector.
Installation
1.
Reconnect the auto light sensor connector.
2.
Install the auto light sensor.

    Inspection Lighting Switch Inspection With the multi function switch in each position, make sure that continuity exists between the terminals below.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Components and Components Location

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    Kia Cadenza YG 2016-2021 Service Manual: Photo Sensor Description and Operation

    Description 1. The photo sensor is located at the center of defrost nozzle. 2. The photo sensor contains a photovoltaic (sensitive to sunlight) diode. The solar radiation received by its light receiving portion, generates an electromotive force in proportion to the amount of radiation received which is transferred to the automatic tem

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