General

The scan tool software is broken into major computer controller groups that are found in the body of the vehicle.

Table #1 Body Main Menu:

The Body Function Controller (BFC), in addition to being an element of the Class 2 serial data link, also has hardwired inputs. Some of these inputs are used a display information for the Instrument Cluster gauges and indicators while other inputs are converted into serial data link and transmitted on the Class 2 serial data link and the Serial Peripheral Interface (SPI) serial data link. The Body Function Controller (BFC) is the only interface to the Instrument Cluster, the BFC converts Class 2 data to SPI for the Instrument Cluster. The choice of inputs that can be read are listed in TABLE #1 shown in the above figure.