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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:

    Components and Components Location
    Component Location 1. Fuel filler door ...

    Reporting safety defects
    If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in ...

    Input Speed Sensor Description and Operation
    Description Input speed sensor is a vital unit that measures the rate of rotation of the input shaft inside the transmission and delivers the readings to the TCM. The sensor provides critical ...

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