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Old 08-07-2005, 12:28 AM
Brian Carlton Brian Carlton is offline
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Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by Arthur Dalton
Yes .. I tried to find that schematic, but I just can't find one for that year/model..
Last time I used one from a gasser and it turned out to be different.
So , basically what I am saying is that if you are getting an interuption, it has to be on the feed side or the ground side ,, so, I would not assume which, as an imcomplete circuit can come from either .

If you bring 12v to the IC relay direct from bat and still have the problem , you then know it is not a feed problem... just like if you have a seperate ground wire to complete the IC circuit and the problem still exist, you know it is not a ground problem .. this is just a way of narrowing down your fault.
[ I am talking coil circuit of relay on this, not load]
If I were to just look at the symptoms , I would guess, with that time frame, that the aux fan was not coming On and the high side pressure was getting to high pressure sw cut-out.

but no schematic , so i do not know that...
Do you have the schemmatic???

I was thinking the same thing regarding the high pressure switch cutout. I do have the schematic and it appears that the high pressure switch runs directly to the CCU and, therefore, can interrupt the ground signal from the CCU to the Klima (or ice cube).

But, I disconnected the leads from the high pressure switch and jumped them. Same results. Is it possible that I should not be jumping those leads to the high pressure switch? Could the switch provide a necessary ground for both those leads, a ground that is broken when the switch opens?
Maybe I need to ground both those leads, independent of the switch??

BTW, the auxiliary fan does start up properly when the tests are done at idle.
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