[V8] 2231 code hell update....

[dsaad at icehouse.net]

That may be a valid thing to do - I don't know how that circuit works but
keep in mind that you are driving un-fused battery voltage INTO an OUTPUT
of the ECU.  Generally speaking this is a bad thing to do.  It all depends
on how the circuit works inside the ECU.

I would do a safer test first - put a light bulb (small wattage like maybe
a marker light bulb) at the connector for the ISV.  If it lights up, the
wires are good.  If you see it vary with engine speed then the ECU is
doing its job.  Exactly how bright the bulb should be is an unknown but
you could try this on two cars and compare results can't you?

I can say that this is a two wire system. It works by varying the voltage
across the ISV coil which in turn causes an armature inside the ISV to
rotate in proportion to this voltage.  This should be easily visible with
the light bulb test.


Dave


> I'm still getting the code. 
> in addition I got the carbon canister code today and ISV code...which is
> different than the ISV control code I'm complaining about.
>
> So what Keith suggested to me is to unplug the ISV at the ISV and drive
> around. If the symptoms are still there then that would eliminate the ISV
> as being the problem. Next 
> I'm to run a jumper wire from the jump start post to the power wire at the
> ISV. If the problem goes away than there is a problem with the power wire.
> If it doesn't go away I'm to run a jumper wire from the back of the fuse
> at the fuse block for the ISV to the power wire for the ISV at the coastal
> connector.
>  All the above will eliminate whats wrong and whats not.This sound about
> rite?
>  Ron
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