ASD fuse blowing with key in run position
#1
12-13-2013, 04:53 PM
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ASD fuse blowing with key in run position
First off, let me just say that though this is my first post, I am a 5 year ASE certified tech, and have been banging my head against the wall on this one for most of the week. Culprit is a 1996 Dodge Ram van 3500. Any time I turn the key to the on position, the A/C compressor clutch engages, and the ASD fuse (#8 on diagram) blows. Remove the A/C clutch fuse (#5) or A/C clutch relay, and symptoms go away. I Have unplugged both A/C pressure switches and blower motor switch, but clutch still engages. This leads me to think I have a two fold problem. A. somewhere the A/C clutch power wire and the ASD circuit have their insulation broken and are touching. B. Something is shorting the control side of the A/C circuit to power.
Has anyone out there ever seen anything like this? And pointers on where to look would be helpful.
Has anyone out there ever seen anything like this? And pointers on where to look would be helpful.
#2
12-13-2013, 10:24 PM
don't know how much merit this has...but this was the first thing I found
http://www.justanswer.com/dodge/0ycm...trans-asd.html
http://www.justanswer.com/dodge/0ycm...trans-asd.html
#4
12-15-2013, 11:50 PM
I have mine unplugged right now.
Also fuses on the left side of the IP facing the driver door. Relays under the hood next or near the battery.
There is a TSB about something that is shiny in the fuse panel near the top. If the van does not have this accessory, weird things like this can happen. It's been since early summer trying to remember where I read this and removed that dumb thing.
Last edited by stev; 12-15-2013 at 11:53 PM.
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12-16-2013, 12:33 PM
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#7
12-16-2013, 06:00 PM
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That would explain why the A/c clutch engages on it's own most of the time, but it does not share a circuit with the ASD. I would think if the A/c was the root problem, it would blow it's 20amp fuse before it blew the 30amp asd. ASD has to be getting extra current from somewhere else to blow it's fuse right? I'll post the wiring diagrams later on if nothing else so they will be available to everyone on here.