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Compass Mini Trip Computer (CMTC) Self-Test

  1. Turn ignition switch to OFF position. Simultaneously depress and hold STEP button and US/METRIC button. Turn ignition switch to ON position, while continuing to hold both buttons. When all Vacuum Florescent Display (VFD) segments are illuminated, release buttons and view VFD display. If segments of VFD illuminate, go to next step. If any VFD display segment does not illuminate, replace CMTC module. Perform BODY VERIFICATION TEST  .
  2. Self-test for Compass Mini Trip Computer (CMTC) systems will end when one of 2 message is display on VFD, either FAIL or CCD. If no message is displayed, diagnostics must be done with Chrysler Collision Detection (CCD) multiplex system Diagnostic Readout Box (DRBIII(R)) with the appropriate system cartridge. If either FAIL or CCD message is displayed, go to next step.
  3. If FAIL message is displayed, replace Compass Mini Trip Computer (CMTC) module. If CCD is displayed, go to appropriate procedure for messages displayed or symptoms present. See SYMPTOM INDEX DIRECTORY  table. If system completes self-test, and no problem is detected, or if ignition switch is turned to OFF position during test, CMTC will automatically return to normal operation.
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