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Hyundai Equus: Description and Operation - Auto Lighting Control System - Body Electrical System - Hyundai Equus VI 2009-2026 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:

    Rear Disc Brake Components and Components Location
    Components 1. Guide rod bolt2. Bleed screw3. Caliper body4. Caliper bracket5. Inner pad shim6. Brake pad7. Pad retainer ...

    Manifold Absolute Pressure Sensor (MAPS) Repair procedures
    Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON. Specification: Refer to "Specification" Removal 1. Tur ...

    Description and Operation
    OBD-II review 1. Overview The California Air Resources Board (CARB) began regulation of On Board Diagnostics (OBD) for vehicles sold in california beginning with the 1988 model year. The first ...

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