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Heat & AC Control Module schematic

Brandon Just a FYI. I could never find anything wrong with the module. However, despite the fact that everything else works fine, and, even the AC light goes on and off with the switch, I could never make any of the pins ohm to ground with the AC switch (at the internal pin connector or at...
- GMTGMC
- Post #6
- Apr 29, 2024
- Forum: Wiring Diagrams
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Heat & AC Control Module schematic

You are correct...it is a 'o4. As you say, the AC lights up when the switch is pressed, which is proof the switch is doing at least something. All that is required for things to work properly, is for the switch to send a good enough ground signal to activate the coil on the relay. I can't...
- GMTGMC
- Post #5
- Apr 22, 2024
- Forum: Wiring Diagrams
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Heat & AC Control Module schematic

Thank you so very much for this and your kind consideration. It will be a great help. I have not given it a proper look yet, but let me prey upon you knowledge. I do not understand my problem. The clutch will engage and all the pressure switches work as they should. The problem is that when...
- GMTGMC
- Post #3
- Apr 22, 2024
- Forum: Wiring Diagrams
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Heat & AC Control Module schematic

To make it short. My AC Clutch relay will not work because it has inadequate voltage. This appears to be ground switched through the controller. There is 12v present on the other side of the circuit and adding good ground to the relay will cause it to work properly. So, this appears to be a...
- GMTGMC
- Thread
- Apr 22, 2024
- Replies: 5
- Forum: Wiring Diagrams