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 a hardwired signal from the Right Multi-function Switch indicating that the rear wiper is requested. When this signal is received, the BCM provides a voltage output through the rear wiper motor control circuit. For additional information on the Rear Wiper operation. Refer to REAR WIPER AND WASHER SYSTEM .