need help in electrical measurements(ISV)

[Konstantin Bogach]

There are 2 fuses. One ceramic 15A/250V and one glass with mark F500L250V.
I don't know for what amperage it is for.  Strange thing is that the latter
one has 0.6 Ohm resistance.

Konstantin.

Richard J Lebens wrote:

> Does your meter have separate fuzes for the different ranges and are
> they ok?
>
> --- Konstantin Bogach <kbogach at comcast.net> wrote:
> > I forgot to mention that I tried to do it on a cold engine rather
> > then 80C
> > as recommended.  It is not that I forgot about it  but just tried to
> > measure
> > the current first on a cold engine.  Just curiosity.  Does it help to
> > find
> > explanation for 0L. reading?
> >
> > Thanks.
> >
> > Konstantin.
> >
> >
> > Konstantin Bogach wrote:
> >
> > > Hi listers.
> > >
> > > Lately 200 '89 MC1started to  idle rough.  I tried to check IS
> > system
> > > using SJM's instructions.  What I can not understand is why ISV
> > buzzes
> > > only if I use mA range on DMM?  If I use A or microA it does not
> > buzz
> > > and DMM shows nothing (.002 as with open circuit).
> > > Another question:
> > > When I use mA range ISV buzzes and DMM shows 0L. which I interpret
> > as
> > > infinity.
> > > SJM covers 0 reading but does not cover infinity reading.  I am
> > pretty
> > > weak in electronics.  Can someone help to interpret this reading?
> > ISV
> > > control unit outputs high current beyond mA range can show?  Why
> > can't I
> > > measure it in A range?
> > > Temp sensor is fine.
> > >
> > > Thanks a lot.
> > >
> > > Konstantin Bogach.
> >
>
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