CMTC Segments Fail To Illuminate

Possible Cause:

CMTC internal fault.

CAUTION: Always turn ignition off before disconnecting or connecting any control module connector. Failure to do so could result in damage to control module.

NOTE: Ensure vehicle being tested has a fully charged battery. If it does not, false symptoms may occur.

NOTE: For component location, see appropriate illustration under COMPONENT LOCATIONS . For terminal identification, see appropriate illustration under CONNECTOR IDENTIFICATION . For circuit and wire color identification, see WIRING DIAGRAMS . For component removal and installation procedures, see appropriate component under REMOVAL & INSTALLATION .

Testing:

Turn ignition off. Depress and hold STEP and US/M buttons on CMTC. Turn ignition on while continuing to hold STEP and US/M buttons. Release buttons when segment test starts. Do all the segments illuminate? If yes, test is complete. If no, replace CMTC. Perform BODY VERIFICATION TEST under VERIFICATION TESTS.