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Cadillac
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1987
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Seville
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Repair and Diagnosis
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Engine Performance
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System
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DFI ECM Tests W/Codes
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Diagnosis & Testing
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Code EO51 - Prom Error
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Action Taken:
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Action Taken:
ECM turns on "SERVICE NOW" light.
PROM not used.
ECM uses CALPAK for backup spark and fuel.
ECM diagnostics disabled. If ECM diagnostics are selected, only code "EO51" will be displayed.