Body Control Module: Communication

WARNING: This page is about a different car, the 2002 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Not including the 2 RKE antenna circuits (RKE antenna + and -), which merely pass through the premium BCM antenna in the instrument panel wire harness, the BCM has the following communications circuits:

PCI bus
RKE program serial data (premium with RKE only)
RKE transmit serial data (premium with RKE only)