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Home >> Cadillac >> 1988 >> Seville STS >> Repair and Diagnosis >> Engine Performance >> System >> DFI ECM Tests W/Codes >> Segment Check

Segment Check

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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.