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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Body Control Module (BCM) - DTCS B145F-01 To B16D1-11) >> DTC Troubleshooting >> B16D1-11 Stop_STOPTURN Light Left - Circuit Short To Ground >> Theory Of Operation - Stop Lamps

Theory Of Operation - Stop Lamps

WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.

The Body Control Module (BCM) receives a hardwired brake signal from the Stop Lamp Switch indicating that the Brake Pedal is applied. When this signal is received, the BCM provides a voltage output through the rear stop lamp driver circuits. A ground path for the lamps is present through the harness to the body sheet metal.

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