[Shotimes] IRCM Compatibility

[Paul Nimz]

The cooling fan will come on if the climate control is in a mode that the
A/C compressor is used, which is anything but the vent or floor position.
This is a good way to test the IRCM (CCRM) for fan relay worthiness.  If the
fan comes on when the CC is in the floor position then the relay secondary
circuit is either shorted or the relay coil ground is grounded.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "George Fourchy" <krazgeo@comcast.net>
To: <shotimes@autox.team.net>
Sent: Friday, April 16, 2004 11:13 AM
Subject: [Shotimes] IRCM Compatibility


> Hey all...
>
> I have two other 1990 IRCMs available, in cars that are running, that I'm
thinking
> of trying in the Lowrider to see if that is the problem.  The one in the
Lowrider
> has a red label with "M" as the large letter in the center.  I haven't
looked at the
> others, but as I say, they are both '90s.
>
> Lowrider's other symptom that makes me think it is the IRCM is the fact
that when
> the key goes to on, the cooling fan starts up....somewhere in the past
I've heard
> that was a symptom of a bad IRCM.  I'll read the codes before I do
anything...I
> didn't have my jumper at the failure site.
>
> Are all IRCMs from a given year compatable with each other?  I'd think
ATXs would
> use a different one than an MTX after 1993, but that isn't a concern here.
>
> Anyone have any experience?  Al Fitz has another one on the way to me, and
I'll
> definitely plug it in, but in the meantime, am I risking anything?
>
> Thanks!!
>
> George
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