Cadillac Repair: trouble code, code question, trouble code

Question
QUESTION: my 1988 deville is giving me trouble code E30, what does that mean?

ANSWER: What you have is a problem in the IDLE SPEED CONTROL MOTOR system.

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QUESTION: does the idle speed control motor system regulate the cruise control?

Answer
Any time the CHECK ENGINE light illuminates the cruise control is automatically shut off until you fix the ISC problem.

Due to the picture limitations of only allowing 1 picture on this persons website and you will require severalpictures to diagnose and fix the fault. Please e-mail: onlineautohelp@msn.com