Compass Mini-Trip Computer (CMTC): Notes

When equipped, the Compass/Mini Trip Computer (CMTC) is located in the overhead console. The CMTC supplements the standard vehicle instrumentation. The CMTC uses a vacuum fluorescent (VF) display to supply the vehicle operator with a compass heading, outdoor temperature, average fuel economy, distance to empty, trip odometer, and elapsed ignition on time. If equipped, the CMTC is also available with an integrated Universal Garage Door Opener (UGDO) known as HomeLink(R).

The CMTC function buttons are labeled C/T, RESET, STEP, and US/M. The three UGDO buttons are labeled with dots to indicate the channel number.

Most of the CMTC display information is received over the PCI bus. The CMTC sends and receives data over the PCI bus, communicating with the NGC (3.7L and 4.7L), or JTEC (5.9L), and the Instrument Cluster.