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Home >> Dodge and Ram >> 2015 >> Durango SXT, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 ((Automatic Headlamp Leveling Module (AHLM) - Electrical Diagnostics)) >> DTC Troubleshooting >> B1684-01-Left Headlamp Leveling Motor Control - General Electrical Failure >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

The Left and Right Headlamp Leveling Motors are used to control the levels of the Front Headlamps. The Automatic Headlamp Leveling Module (AHLM) communicates with the Headlamp Leveling Motors via a LIN BUS circuit. The Headlamp Leveling Motors are integrated into both the Left and Right Headlamp Housings. If a motor is defective, the entire assembly must be replaced.

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