Idle stepper motor

[Jose Carlos Rublescki]

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