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Home >> Buick >> 1991 >> Reatta 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm/BCM >> Override Display Codes >> ECM Override Parameters >> Es03

ECM Override Parameters: Es03

IAC MOTOR display will show position IAC motor is being commanded to in percentage of travel. Vehicle must be in Park or Neutral. TEMP DOWN button will retract motor (increasing RPM) and TEMP UP button will extend motor.