Idle stepper motor

[Sandy]

The GM IAC motor that I have messed with works right off the 12V, as I
recall it is a bi-polar 2 phase motor. Look in any of the injection books
or repair manuals for the diagram and connectinons. I drove it with one of
those stepper motor drivers from the back of Popular electronics, it was
from ALL Electronics, but others have the exact same one.

Sandy

At 10:07 PM 2/8/98 -0300, you wrote:
>Hi all,
>
>I have a project of a fuel injection system based on a 68hc11 that just
>starting to work fine. Could anyone help me with some info on the stepper
>motor used to regulate the idle speed of the engine. It's an G.M. IAC motor
>(I think). What I'd like to know is what voltage it works with (5V or 12V),
>what's the pin assignments, and if it is an unipolar or bipolar stepper
>motor.
>
>Thanks in advance,
>Jose Carlos Rublescki
>
>