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Home >> Chrysler >> 2021 >> Voyager LXi, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B170B-11 To B2312-15 >> Diagnosis And Testing >> B2121-11-Ignition Run Control 1-Circuit Short To Ground >> Theory Of Operation

Theory Of Operation

The Body Control Module (BCM) receives the network communication message from the Radio Frequency (RF Hub) Module indicating run operation is requested. The BCM provides a voltage output through the Run Relay Control circuit to the coil side of the RUN Relay in the Power Distribution Center (PDC) Assembly. A ground path for the RUN Relay is provided through the PDC Assembly.