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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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04-20-2019, 08:12 PM | #1 |
Not Yet Wild
Join Date: Oct 2015
Posts: 44
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48 volt cart Main Solenoid will not click in
I just replaced the controller and the cart ran fine. The next day it won’t budge. Brand new Trojan Batteries, fully charged. The two small terminals on the 400 amp controller are connected to pin 1 and pin 17 on the controller. Pin 1 has pack voltage with accelerator pushed. I assume the issue is with pin 17. I removed all the wires and cables from the the large lugs and connected full pack voltage to the small terminals and it clicks in and hold with no issue. The emergency brake is released. Does anyone have any suggestions. Thanks in advance.
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04-21-2019, 07:52 AM | #2 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 48 volt cart Main Solenoid will not click in
Quote:
Modern computerized controllers are not the same as the older TTL Logic controllers of the past decades that had much simpler logic. I was involved in that logic transition. Input impedances increased by large margins, and the voltage levels that could be interpreted as logic highs has decreased by more than half. The high impedance probe to probe potentials of a DVM in low ohms can affect the status of an active controller input. Bob |
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04-21-2019, 09:00 AM | #3 |
Not Yet Wild
Join Date: Oct 2015
Posts: 44
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Re: 48 volt cart Main Solenoid will not click in
Thanks for your reply. Maybe you can answer a question regarding the main solenoid. The small wires are connected to pin 1 and 17. Pin 1 is from the switch and carries full pack voltage which would be +. If Pin 17 is Pack voltage+ where is the solenoid getting the - or ground. When I rest I remove all wires and cables and energize with 48 + and - and it energizes and holds. Thanks
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04-21-2019, 09:37 AM | #4 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 48 volt cart Main Solenoid will not click in
Quote:
I suggest that you download the service manual for your cart/controller from the stickies above, and follow it to the letter, if you do not have a diagnostic handset or station for your cart. These modern controllers are very easy to damage by not knowing the correct diagnostics procedures. You might as well tell everyone else here the year and model of the cart you are working on. I already know. LOL Bob |
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04-21-2019, 07:38 PM | #5 |
Not Yet Wild
Join Date: Oct 2015
Posts: 44
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Re: 48 volt cart Main Solenoid will not click in
Thanks Bob I was holding off on providing too much info some people go into shutdown mode when you mention R&T. It is a 2009 4 wd. I am not sure why they get such a bad rap possibly since wiring diagrams are non existent. There is only so many ways to build a Golf Cart. This is my first experience with a cart that has a controller. It is a mystery to me. I replaced the Curtis 1268 controller in September also Batteries. It ran like a champ until it stopped last week. I took the car it back to my mechanic and he replaced the new controller with the old one which he had rebuilt. We checked the ITS the main solenoid, the speed sensor on the motor and the motor all testing good. A couple days after the controller was replaced it stopped again. The solenoid won’t click when the accelerator is pushed. The solenoid check out fine when the wires are removed and I jump it with the battery pack. I went through Curtis diagnostic procedure and the only reading that was a little off is pin 17 reads 45.7 volts which is less than pack voltage. The walk away relay may be an issue but I check the voltage on each pin associated with it and the voltage checked out. I have too much invested in this cart to trash it.
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04-22-2019, 01:34 AM | #6 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 48 volt cart Main Solenoid will not click in
Quote:
1268 controllers with the correct suffix codes are sorta difficult to find. If all else fails, you may be able to use Alltrax SepEx controllers. You may be able to integrate the throttle signals so that both Alltrax controllers work together seamlessly for 4WD. If not, maybe just get it running in 2WD first with each axle. It's definitely worth saving! Bob |
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04-22-2019, 06:55 AM | #7 | |
Not Yet Wild
Join Date: Mar 2019
Location: Alabama
Posts: 63
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Re: 48 volt cart Main Solenoid will not click in
Quote:
Hey Bob, I hope you’re doing well. Just wanted to see if I can send you my controller to be adjusted? Would like my cart to go about 25 mph or so. Thanks, Darryl Sent from my iPhone using Tapatalk |
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04-22-2019, 07:13 AM | #8 |
Not Yet Wild
Join Date: Oct 2015
Posts: 44
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Re: 48 volt cart Main Solenoid will not click in
Thanks again. I don’t have a handheld programmer and it is difficult to find someone that really understands A Ruff & Tuff and how to work on it.
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04-22-2019, 09:34 AM | #9 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 48 volt cart Main Solenoid will not click in
It's like any other cart in that it has a lot of basic systems combined to create the whole. I've worked on lots of things that manuals are not available for. But my niche is usually in aerospace.
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04-22-2019, 09:38 AM | #10 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 48 volt cart Main Solenoid will not click in
usgicollector is helping me communicate along those lines while I am recovering. He'll contact you.
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Tags |
curtis 1268, pin 1, pin 17 |
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