Quote:
Originally Posted by turbomart
Sounds like it might be something with the actual control board that the switch and knob is part off. I believe its not supposed to be repairable but id pull it apart and take a look anyway.
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You've got the wrong end of the ....wiring....
The plug I'm talking about is the power feed direct to the motor, it sits (a slide-on, clip-on fit) on the motor and the plug has one heavy wire to the motor at one end and at the other side (half) of the plug are many wires (thinner) which I presume come from the fan switch which has "Auto Lo" , "Auto Hi" , and then a continous range from "Lo" to "Hi" via some sort of "black box" or device/s ...........and the blower will ONLY work on "Hi" , at the end of the switch dial.
I assume this is because it makes a DIRECT connection of FULL available power to the blower motor, by-passing any sort of variable resistor/ rheostat type arrangement or it seems from the diagrams the ATC Control Module.
When I "fiddle"/repair it, all I've ever done is disconnect this last plug connection before the motor. So while you'd think the fault could be in the variable resistor/rheostat or ATC Control Module part of the circuit, I never touch that - yet the fault is fixed for another few weeks.
I've been looking at the PDF Service Workshop Manual for ZJ 93-97, Section 8W, pp :116,118,119 - Wiring Diagrams ZJ 75,77,78 and they are not exactly what I have in my car. There is NO connector plug just before the motor, what is shown is the power feed Brown/Red wire going back into a splice with other wires before going into one of the two HVAC 16-way multi-plugs.
So no access to wiring Diagrams for a 97 ZG, however I do have the data and diagrams for the 98 ZG. This shows the single wire going back to the PDC and the several wires going back to the ATC Control Module.This is NOT the same as I have got either!!! Besides which, I never disconnected any other plugs! Looking at and trying to follow different pages on different manuals on different screen pages, going back and forth has resulted in one massive headache!!!!
Again I plea for input and assistance, having explained the problem and its parameters better...... um, I hope.