RE: [DML] Re: Idle Speed Motor / Cooling
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RE: [DML] Re: Idle Speed Motor / Cooling



Good try but not correct. The motor won't burn when you connect it directly
to +12V because this situation can happen (almost)under normal
use. (It's driven by a PWM and it won't really matter if it's 90% or 
100% so it shouldn't burn at least not within a few seconds.) It's
protected from overheating by its own resistance of the copper wires.

The ECU is not controlling the current, what it does is telling
40% open(turn left) and 60% close (turn right) or any other values depending
of the idle situation. Therefore it is possible that when 
you pull the connector one contact is disconnected before the other 
and it goes in one direction - so idle can go up or down or stay 
where it was.

Elvis


> Dave, The motor, as you know doesn't turn as a motor really does but just
> makes a 180 degree turn back and fourth to open and close an air passage
> way.
> If you apply 12 volts to the terminals for say 5 sec or so with out
> controlling the current you will burn it up. So there is 12 volts going to
> it all the time when the key is on, but the ECU is controlling the
> current,
> so it acts like it's on but it hasn't changed position until the micro
> switch tell it to thru the ECU, that's my short explanation.
> John Hervey
> www.specialtauto.com
> 
> 

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