Self-Check Diagnostics

SELF-CHECK DIAGNOSTICS
The CMTC/EVIC is capable of performing a diagnostic self check on its internal functions.

CMTC/EVIC diagnostics may be performed using a DRB III or by using the following procedure:
1. With the ignition switch in the OFF position, depress and hold the RESET and the C/T buttons.
2. Turn the ignition switch to the ON position.
3. Continue to hold both buttons until the software versions are displayed, then release the buttons.
4. All of the VFD segments will illuminate for 2-4 seconds. Check for segments that do not illuminate or illuminate all the time.
5. When the self-check is complete the CMTC/EVIC will display one of the following messages:
PASS SELF TEST
FAILED SELF TEST
NOT RECEIVING J1850 MESSAGE

6. To exit the self-check mode, depress the RESET button or cycle the ignition switch and the CMTC/EVIC will return to normal operation.

If a Communication fault is displayed, refer to the symptom list. If a FAILED SELF TEST is displayed, the CMTC/EVIC must be replaced.