Voyager V6-3.3L VIN R (1999)
Trip Computer: Description and Operation
COMPASS/MINI-TRIP COMPUTER
The Compass/Mini-Trip Computer is located in the overhead console. The CMTC consists of a electronic control module with a vacuum
fluorescent display (VFD) and function switches. It displays to the driver the direction the vehicle is traveling and the current outside temperature,
as well as the following traveler navigational information:
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Average Fuel Economy (AVG ECO)
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Distance To Empty (DTE)
-
Instantaneous Fuel Economy (ECO)
-
Elapsed Time (ET)
-
Trip Odometer (ODO).
Pushing the STEP button when the ignition is ON will cause the CMTC to change mode of operation.
The information needed for the traveler functions is received over the CCD bus from the Body Control Module.
If the Compass/Mini-Trip Computer has been replaced, it may be necessary to reset the calibration.
SYSTEM OPERATION
Compass/Mini-Trip Computer Self Diagnostic Test
The Compass/Mini-Trip Computer (CMTC) is capable of performing a diagnostic self check on many of its internal functions. CMTC diagnostics
may be performed using a DRB lll scan tool and the proper Body Diagnostic Procedures or by the following procedure.
1. With the ignition switch in the OFF position, press both the US/M and STEP button.
2. Turn ignition switch to the ON position.
The CMTC will perform internal checks while lighting all segments of the vacuum florescent display. Upon completion of the internal check, the
CMTC will display:
-
PASS
-
FAIL
-
CCD
If any segment of the CMTC fails to light, replace the module.
If FAIL is displayed, replace the module.
If CCD is displayed, check the CCD and Body Control Module (BCM) for proper operation, refer to the appropriate diagnostic test procedures. If
the CCD and the BCM are OK, replace the CMTC module.
For additional diagnostic information on the CMTC and for identifying CMTC problems, refer to the proper Body Diagnostic Procedures.
Compass Mini-Trip Computer (CMTC)
Compass Mini-Trip Computer (CMTC) Switches and Display
