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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1373 (Body Control Module (BCM) - DTCS B1046-64 To B1166-71) >> DTC Troubleshooting >> B1109-15-STOPPOSITION-STOPPARKINGTURN Lights Left 2-Circuit Short To Battery Or Open >> Theory Of Operation

Theory Of Operation

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

When the Stop Lamp Switch is activated, a hardwired brake signal is sent to the Body Control Module (BCM). When the BCM receives this brake signal, indicating the Brake Pedal is applied, the BCM sends a voltage output through the Stop Lamp Driver circuits and Brake Signal 2 circuit to the Left and Right Tail Lamps, and the Center High Mounted Stop Lamp (CHMSL), which illuminates the Stop Lamps. A separate ground circuit for the Tail Lamps and CHMSL is provided through the wiring harness and is attached to the body sheet metal.

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