Segment Check
WARNING: This page is about a different car, the 1988 Cadillac Seville and 1988 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
The segment check illuminates the Instrument Panel Cluster (IPC) and CCDIC to ensure that all segments of the vacuum fluorescent displays are working. The turn signal indicators do not light during this check. If all segments are not lit, diagnosis should NOT be attempted, as misdiagnosis may occur (code "E034" appears as "E031", etc.). If any portions or segments of the CCDIC display are inoperative, it must be replaced.