Theory Of Operation
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
The Body Control Module (BCM) receives an input from the Left Multi-function Switch requesting turn signal lamp illumination. When this message is received, the BCM provides a pulsed voltage output through the Front and Rear Turn Signal Driver circuit. The Turn Signal Driver circuits connect to the single filament Turn Signal Lamps. For additional information on the Turn Signal Lamps operation. Refer to TURN SIGNAL LAMPS .