TEA is a computerized control and monitoring system which is used to control and coordinate the various functions of the vehicle main components. The control units communicate over what is known as CAN at two speeds SAEJ1587/1708 @9600 bit/s and SAEJ1939 @ 250 000 bit/s where up to eight Electronic Control Units were used to control various functions. A J1939 data link is used for mission-critical rapid communication among ECUs and J1587/1808 is used for diagnostic and programming links as well as "slow" communication e.g. for backup purposes. The new instrument cluster included an LCD panel to show information or diagnostic messages from the systems broadcast via the J1708 data link.