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Home >> Cadillac >> 1991 >> Seville STS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Parameters >> Engine Controls - Tests W/Codes >> Data Displays

Data Displays

Data displays are operated as defined under SELECTING THE TEST. When troubleshooting a malfunction, the BCM and PCM data display can be used to compare vehicle with problems to a vehicle which is functioning properly. See SPECIFIC TEST TYPE AVAILABILITY.

SPECIFIC TEST TYPE LETTER CODE

Code System Test Type
BD BCM Data
BI BCM Input
BO BCM Output
BS BCM Override
ED PCM Data
EI PCM Input
EO PCM Output
ES PCM Override
II IPC Input