Trip Computer: Description and Operation

COMPASS/MINI-TRIP COMPUTER
The Compass Mini-Trip Computer (CMTC) is a module located in the overhead console. The CMTC is equipped with a mini-trip feature. The CMTC consists of a electronic control module with a Vacuum Fluorescent Display (VFD) and function switches. The CMTC consists of a electronic module that displays compass, trip computer, and temperature features. Actuating the STEP push button will cause the CMTC to change mode of operation when ignition is ON. Actuating the STEP push button will cause the CMTC to change mode of operation when ignition is ON.

Example:
- Average miles per gallon (ECO)
- Distance To Empty (DTE)
- Instant miles per gallon (ECO)
- Trip odometer (ODO)
- Elapsed Time (ET)
- Off

Actuating the C/T push button will cause the CMTC to change to Compass/Temperature display.

The Compass/Mini-Trip Computer module in the overhead console has buttons used to select various functions. The CMTC selector buttons will not operate until the ignition is in the RUN position.

When the ignition switch is first turned to the RUN position, the CMTC display returns to the last mode setting selected before the ignition was last switched OFF.

COMPASS/MINI-TRIP COMPUTER (CMTC) OR ELECTRONIC VEHICLE INFORMATION CENTER (EVIC)
When equipped, the Compass/Mini Trip Computer (CMTC) or Electronic Vehicle Information Center (EVIC) is located in the overhead console. The CMTC or EVIC supplements the standard vehicle instrumentation. The CMTC and the EVIC use a Vacuum Fluorescent (VF) display to supply the vehicle operator with a compass heading, outdoor temperature, average fuel economy, distance to empty, instantaneous fuel economy, trip odometer, elapsed ignition ON time, distance to service, warning messages, and service messages. The EVIC also provides an interface to enable and disable vehicle programmable features and display memory system messages. If equipped, the CMTC or the EVIC is also available with an integrated Universal Garage Door Opener (UGDO) known as HomeLink.

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

Most of the CMTC or EVIC display information is received over the PCI bus. The CMTC or EVIC sends and receives data over the PCI bus, communicating with the FCM, PCM, and the Instrument Cluster.