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Home › Oldsmobile › 1990 › Toronado Base, 4T60/ME9 › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - ECM › Manual Operation Of Service Mode › Data Display Code › FOR CRT Control CODE:

FOR CRT Control CODE:

CD99 CRTC PROM I.D. (PROM ID) displayed as number up to four digits long, which can be used to verify that proper PROM was installed in the CRT monitor.