Normal Operation

The medium speed controller area network (MS-CAN) uses an unshielded twisted pair cable, circuits (GY/O) and (V/O). The smart junction box (SJB), audio control module (ACM), satellite digital audio receiver system (SDARS) module, front display interface module (FDIM), front controls interface module (FCIM), and the HVAC module communicate with the scan tool using the MS-CAN. The instrument cluster (IC), while on the MS-CAN, communicates with the scan tool only on the HS-CAN.