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Unread 11-30-2016, 08:45 AM   #1
Gone Wild
 
Join Date: Mar 2011
Posts: 237
Default 2010 Shelby was dead - problem solved - may help other people

I recently fixed my dead 2010 Tomberlin Shelby, and figured this might help some of you with similar issues.

First I was getting crazy controller errors:

Precharge fault
Main Contactor Welded
or sometimes no power at all.

I started by checking both solenoids. I did this with alligator clips off the main battery pack to the smaller posts on the solenoid. When you apply the pack voltage to the smaller posts you should hear a click, this is the solenoid activating. Once activated you can check polarity on the main posts. Both solenoids checked out.

I then turned on the power and checked voltage on the solenoids and noticed that when the cart was dead I was not getting pack voltage on the smaller posts, which explained why they were not activating.

I check the switch at the parking brake, the run/tow switch, the key switch and the F/R switch, all were fine for polarity but not for the proper voltage, which told me there was a problem in the harness itself.

After taking the factory harness completely out of the cart and testing each wire for polarity I found a factory solder joint that had corroded. This joint completely fell apart once I removed the insulation. Soldering the joint back together solved all the issues.

This seems like a weak point in the design of the cart , being that there are several joints at this intersection and it runs under the cart, which means it can get wet. The solder points are all located just under the driver side of the cart. You will see an immediate snap connector attached to the frame, then a branch going to the parking brake switch and a branch going to the accelerator. Unwrap the electrical tape from the main harness in this location and you can access the solder connection. My issue was with the 3 red wires at this point, but there are several other colors there as well which could corrode.

Hope this helps.
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Unread 12-07-2016, 05:38 AM   #2
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Join Date: May 2015
Location: Central Florida
Posts: 1,281
Default Re: 2010 Shelby was dead - problem solved - may help other people

That's a common failure
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