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Home >> Dodge and Ram >> 2017 >> Challenger SXT Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 2066 ((Adaptive Front Lighting System Module - Electrical Diagnostics)) >> DTC Troubleshooting >> B1681-00-Rear Headlamp Leveling Sensor Circuit Performance >> Theory Of Operation
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Theory Of Operation

WARNING: This page is about a different car, the 2020 Chrysler 300 and 2019 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

The Front and Rear Headlamp Level Sensors monitor changes in the relative distance between the vehicle body and the front or rear suspension members. The sensor circuitry is energized by the Adaptive Front Lighting System (AFLS) Module and both sensors provide hard wired inputs back to the AFLS Module. The AFLS Module uses these sensor inputs as logic for calculating when and how much to adjust the headlamp beams as part of the Adaptive Front Lighting System (AFLS).