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Home >> Cadillac >> 1989 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> DFI ECM Tests W/Codes >> Diagnostic Charts >> ECM Code EO30 - Idle Speed Control Circuit Problem >> Failure Conditions
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Failure Conditions

ISC plunger extending with TPS position less than or equal to 9 degrees or ISC retracting with TPS position greater than or equal to 2.5 degrees for 15 seconds.

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