Theory Of Operation
WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
The Body Control Module (BCM) receives a communication network message from the Steering Column Control Module (SCCM) requesting turn signal lamp illumination. When this bus message is received, the BCM provides a pulsed voltage output through the rear turn signal control circuit. The rear turn signal control circuit connects to either a single filament Turn Lamp or a dual filament Park and Turn Signal Bulb in the Lamp, Tail Stop Turn. The same ground circuit is used for both the Park and Turn Signal filaments in a dual filament lamp. For additional information on the Turn Signal Lamps operation. Refer to OPERATION .