Quote:
Originally Posted by M.B.DOC
The "MAS" relay engages the a/c compressor on that car.
Could be several problems that cause the compressor NOT to come on.
The a/c controller (pushbutton) sends ground signal to that relay thru the low pressure switch on the drier. Checking for that ground signal would be MY starting point.
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Thanks!
I see two switches at the drier. One appears to be a traditional A/C low-pressure switch (EDIT: S31) and is ON the drier. The other is green plastic and I think was on a fitting right AT the drier. Would the green one be a temperature switch? (EDIT: The Green one is a pressure switch [S32] that turns on the AUX FAN)
I will find a way to test at the pressure switch. It is good to know I am looking for a ground there from the Climate Controller.
Where is the MAS relay? I may want to examine it for bad solder joints.