alternator circuit question

the reason why i ask is because the emiision test center cares here in MD.
I no all about those irrelvant codes, its hard to tell the emission test
center that the check engine lite is on becuase of a P/s switch is faulty,
but they dot care, they go by the guidelines, lite is on vehicle fails
"Daniel J. Stern" > wrote in message
n.umich.edu...
> On Fri, 19 Nov 2004, maxpower wrote:
>
> > will that still set a fault for alt not switching properly?
>
> Some SBEC calibrations won't care that an external regulator is doing the
> job; others will set a fault. Of those that set a fault, some (mostly
> '92-up) will illuminate the MIL. This can be worked around as previously
> mentioned by putting a resistor across the vehicle's two original field
> wires (which have been disconnected from the alternator). And really,
> that's the only thing that matters, is that this repair be made in such a
> manner as not to have the Check Engine light on. If it sets a fault code,
> who cares? There are plenty of cases where an irrelevant fault is stored.
> Cars without A/C routinely set a 33 ("Open or Short in A/C clutch
> circuit"). K-car derivatives that have had the torque converter lockup
> disconnected in accordance with the TSB on part-throttle surge and lug
> will set a 37 ("Open or short in TCC circuit").
>
> The important thing is that the charging system's operation will be
> reliably restored without causing new problems, and at a much lower cost
> than replacing the computer.
>
> DS