Adaptive Front Lighting System

The Adaptive Front Lighting System (AFLS) module monitors hard wired inputs from the front and rear axle (leveling) sensors. The AFLS module also monitors electronic message inputs from the Body Control Module (BCM) (also known as the Common Body Controller/CBC), the Controller Antilock Brake (CAB) (also known as the Antilock Brake Module/ABM, Antilock Brake System/ABS module or the Electronic Stability Control/ESC module) the Powertrain Control Module (PCM), the Steering Angle Sensor (SAS) and the Steering Control Module (SCM) received over the Controller Area Network (CAN) data bus.

The AFLS module is programmed to use these inputs and, as a Local Interface Network (LIN) master node, respond by providing electronic message outputs over a Local Interface Network (LIN) data bus connection to the leveling and swiveling stepper motors within each High Intensity Discharge (HID) front lamp unit. The four stepper motors, which are each a LIN slave node, respond by adjusting the aim of the headlamp beams up, down, right or left as commanded. The stepper motors then provide a confirmation reply over the LIN bus to the AFLS module indicating the current beam position.