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Hyundai Equus: Description and Operation - Auto Lighting Control System - Body Electrical System - Hyundai Equus VI 2009-2025 Service ManualHyundai Equus: Description and Operation

Description
In the state of IGN1 ON, when the multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to the vertical and horizontal auto light sensor's input.

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.
    Components and Components Location
    Component Location 1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Tail lamps5. IPM (Instrument Panel Module) ...

    Auto Light Sensor Repair procedures
    Inspection In the state of IGN1 ON, when the multi function switch module detects auto light switch on, tail lamp relay output and head lamp low relay output are controlled according to auto li ...

    See also:

    Injector Drive Box (IDB) Schematic Diagrams
    Injector Drive Box (IDB) IDB Connector ECM Terminal Function Connector [C200-IDB] Pin No.DescriptionConnected to1ECM groundChassis ground2ECM groundChassis ground3Battery power (B+)Main rela ...

    GVW (Gross vehicle weight)
    This is the Base Curb Weight plus actual Cargo Weight plus passengers. ...

    Engine Coolant Temperature Sensor (ECTS) Repair procedures
    Inspection 1. Turn the ignition switch OFF. 2. Remove the ECTS (Refer to "Removal"). 3. After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECT ...

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