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  #13  
Old 12-05-2013, 09:01 AM
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Re: EVIC Problem

Cool. Very interested in the outcome.

I had my mechanic take a look and he believes that the EVIC unit is bad, quoted me several hundred $$ .......which I declined.

Mine doesn't light at all. But I lived through the same symptoms you have described. I'm thinking that I may pull the and replace with one off of ebay. or a pick-n-pull. They are relatively cheap. If it works I'll post-up.

Regards.
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Old 12-06-2013, 01:47 PM
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Re: EVIC Problem

G301 whcih appears to be the ground point for the wiring from the EVIC may be under the carpet inside under the drivers seat or there along side. I have not yet looked at that, but I did look inside the fuse box. Fuse 22 is a 40amp fuse and is solid. Fuse 8 does not exist. Nothing in that slot, not even any fuse connectors under the base cover. Not sure about that one. This is a 2004 Overland. It does have a sun roof which may have been an option and may in fcat get it's power and ground connection through the same wire set coming up to the EVIC. If thats true, the ground may be solid as the sunroof works fine ALL the time.

Was able to access the dioag by holding down the two buttons. I got a passed test almost immediately.

Not sure if I mentioned that the overhead reading lights do work even when the EVIC does not light up. I may need to remove the drivers seat to access the ground point for G301. I will do that next. Also I may try to take down the unit from the headliner just to see if anything looks loose there. Not sure how that comes off. I think there is a holding screw towards the front of the unit, then perhaps moving the whole module forward, it will come down enought to access the wire connectors.

I really don't think the unit is bad because it does function most of the time, but not when it's cold plus the fact it passed the diog test.
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Old 12-07-2013, 11:47 AM
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Re: EVIC Problem

I won't expect G301 to be the problem, since it is the ground for quite some other components, ie some of the power seat functions, left rear lock motor and window and adjustable pedals. This ground point is probably a stud where several wires connect togeter. The two components which share the exact same ground wire on this stud are the rain sensor and if installed, the intrusion transceiver module. So if the problem happens again, switch the wipers in intermittent and see if they work. Even with the rain sensing module inoperative the wipers will do one swipe and then wait for a wipe signal from the rain sensing module. So if its not raining, throw some water at the rain sensor area to test.
But since the problem is temperature related, i wonder if there is not a problem with the EVIC circuit board, maybe a loose solder or cracked board, which problem only appears due to the thermal properties of the board
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  #16  
Old 12-11-2013, 11:50 AM
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Re: EVIC Problem

This problem does not keep me from driving and so when I get a chance, I will see if I can remove the EVIC module from the mount and have a look at the assembly. I know circuit boards very weel as i used to work for Delco Electronics in Kokomo Indiana. At one time they tried to use ceramic circuit boards in their radios. That ended up being a very bad idea per the thermo expansion issues you mentioned. Fiberglass boards can have simular problems or other issues with type solder used, flex issues, one sided or two sided boards, surface mounted or inserted components, etc. I will post again if I can figure it out. Thanks for all the suggestions with regards to the wiring assembly, attachment points and supplied power.
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