Instantaneous Fuel Economy

The CMTC receives instantaneous fuel economy information from the BCM over the PCI bus line. If the CMTC displays a dash (-) instead of an instantaneous fuel economy value, it is not receiving a PCI bus message for the instantaneous fuel economy from the BCM. To diagnose the PCI bus line and the BCM, see BODY CONTROL MODULES - CONCORDE, INTREPID & 300M article.