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Home >> Dodge and Ram >> 2015 >> Durango SXT, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Body Control Module (BCM) - DTCS B1208-11 To B2119-11) >> DTC Troubleshooting >> B1707-15-Left Reverse Lamp Control - Circuit Short To Battery Or Open >> 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.

When the Body Control Module (BCM) receives a CAN Bus message from the Transmission Control Module (TCM), indicating the vehicle is in REVERSE, the BCM provides a voltage output through the Backup Lamp Driver circuit to the Backup Lamps. A ground path for the Backup Lamps is present through the harness to the body sheet metal.

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