Adaptive Forward Lighting (AFL), Brief Description

Adaptive Forward Lighting (AFL), Brief Description





Overview
^ Unit, light switch (10/684)
^ Unit, ignition switch, ISM (20)
^ Brake light switch (29)
^ High-level brake light contact (31)
^ Transmission range switch, automatic transmission (245)
^ Motor, headlamp adjustment (280)
^ Underhood Electrical Center, UEC (342)
^ Control module, TCS/ESP (382/671)
^ Control module, TCM (502)
^ Main instrument unit, MIU (540)/ SID (541)
^ Column Integration Module, CIM (703)
^ Tilt sensor, load, front (704F)
^ Tilt sensor, load, rear (704R)
^ Body Control Module, BCM (707)
^ AFL control module (752)
^ 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.