9-3 (9440) V6-2.8L Turbo (2008)
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Headlamp Alignment Control Module: Description and Operation
Adaptive Forward Lighting (AFL), Brief Description
Adaptive Forward Lighting (AFL), Brief Description
Overview
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Unit, light switch (10/684)
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Unit, ignition switch, ISM (20)
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Brake light switch (29)
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High-level brake light contact (31)
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Transmission range switch, automatic transmission (245)
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Motor, headlamp adjustment (280)
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Underhood Electrical Center, UEC (342)
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Control module, TCS/ESP (382/671)
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Control module, TCM (502)
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Main instrument unit, MIU (540)/ SID (541)
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Column Integration Module, CIM (703)
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Tilt sensor, load, front (704F)
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Tilt sensor, load, rear (704R)
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Body Control Module, BCM (707)
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AFL control module (752)
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Engine Control Module (ECM)
Description
The AFL system (Adaptive Forward Lighting) is a system that combines automatic headlamp levelling and curve-lighting headlamps into a single
system. The automatic headlamp levelling function is the same as for cars with AHL only. The difference is that it is integrated with the curve-lighting
headlamp system.
Curve-lighting headlamps constitute a system that broadens the beam slightly when driving on winding roads. The headlamp's xenon optics are equipped
with a stepper motor that can turn the optics maximum 15 degrees to the left or right from the "straight ahead position". The AFL control module is
connected to the P-bus and uses "vehicle speed" and "steering angle" to determine how much the headlamps should be turned. Using a communication
lead, AFL communicates with a control module integrated in the headlamps. The control module controls the stepper motors for headlamp levelling and
curve lighting. The system also has a function that extends the area illuminated by the beam at speeds over 110 km/h.
