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Kia Sedona: Auto Head lamp leveling Unit Description and Operation - Head lamp leveling Device - Body Electrical System - Kia Sedona YP Service ManualKia Sedona: Auto Head lamp leveling Unit Description and Operation

Third generation YP (2014-2026) / Kia Sedona YP Service Manual / Body Electrical System / Head lamp leveling Device / Auto Head lamp leveling Unit Description and Operation

Description
According to driving environment and loading state of vehicle, head lamp lighting direction is changed to keep the driver''s visibility range and to protect the driver''s vision from glare, aiming at safety driving.
Sensor integrated into ECU mounted on the rear center arm drives the actuator mounted on the head lamp by sensing the input signal in case of vehicle static change.
Head lamp beam is automatically operated by chassis tilt.
Operation
Operating Procedure
1.
Suspension angle changes due to change in vehicle load.
2.
Sensor angle changes.
3.
Microprocessor calculates required degrees of change in head lamp angle.
4.
Sends a proper signal to head lamp leveling device and driving actuator
Operating Condition
1.
Ignition on
2.
Low beam on
3.
On stop : If sensor lever change is 0.3° and above, head lamp is operated after max. 1.5 sec
4.
On driving : If vehicle velocity is over 4km/h (2.48mile/h), velocity change is not over 0.8-1.6km/h (0.5 ~ 1.0mile/h) per second, and loading condition is changed, then head lamp is operated.
Components
1.
Auto head lamp leveling unit
1. Leveling unit & sensor
2. Sensor mounting bracket
3. Sensor linkage

•
Using a Micro-processor, detect the operation lever''s mechanical angle change or speed signal.
•
As an actuator control device of inner control program, mounting on the rear center arm.
Auto Head lamp leveling Unit Schematic Diagrams
Circuit Diagram ...

Auto Head lamp leveling Unit Repair procedures
Inspection 1. Ignition "ON". 2. Turn on the head lamp switch. 3. Check for operation. If the aim of the head lamps changes smoothly when the head lamp leveling switch is turned. 4. If ...

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