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Home >> Cadillac >> 1990 >> Seville Base, 440T4/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM Trouble Code Charts >> ECM Code EO30: Idle Speed Control Circuit Problem >> Test Conditions:
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Test Conditions:

Codes EO21, EO22, EO24, EO26 and EO27 clear, vehicle speed equals zero with throttle switch closed, no power steering load is present, battery voltage greater than or equal to 11 volts and desired RPM is 152 RPM greater than actual RPM.

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