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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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01-04-2018, 11:53 AM | #1 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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2012 RXV brake problem - Curtis Controller
Helping a friend with his locked up RXV brake. I am following the RXV 48v AC Curtis Advanced Trouble-Shooting Guide.
Step 1 - Failed: Cart does not roll with key off and switch in tow position. Step 2 - Failed: Checked wires to brake and no voltage observed in either run or tow with key in any position. Step 3 - Passed: Reading 25.5 ohms on the brake coil The cart's brake lights stay on when key is turned on, I think this means it is failing the Controller startup test of the brake. Anybody have advice how/where to troubleshoot no voltage on the brake wires? |
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01-04-2018, 12:25 PM | #2 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 2012 RXV brake problem - Curtis Controller
Quote:
Bob |
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01-04-2018, 02:00 PM | #3 | |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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Re: 2012 RXV brake problem - Curtis Controller
Quote:
Check/replaced the fuse, no change. Checked the run plug and there must be a problem here. Looks like the run plug had corroded a while ago and someone twisted together some of the wires, but they have come loose. There are 3 red, 2 black, and one black white. How should these be connected together? |
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01-04-2018, 03:06 PM | #4 | |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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Re: 2012 RXV brake problem - Curtis Controller
Quote:
I have 48v to the brake cable with switch on run and key to on. I can push the cart. The brake lights are still on though and the cart is still not running. |
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01-04-2018, 07:52 PM | #5 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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Re: 2012 RXV brake problem - Curtis Controller
Also forgot to mention that when the run/tow set to run and I turn the key to on, the cart lurches. First back, then forwards.
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01-04-2018, 08:33 PM | #6 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: 2012 RXV brake problem - Curtis Controller
Failed motor brake
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01-05-2018, 12:00 AM | #7 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 2012 RXV brake problem - Curtis Controller
It may be the other connections on the Run Plug. There are + and - loop connections for the motor brake, as well as several other terminals for other functions. One of those is a motor brake sense line to the controller. See if you can borrow a Run Plug from somewhere and see if it fixes it. If so, copy the connections to your Run Plug. Beware though, there are controller ports wired to the Run Plug socket. If you short the wrong connections, you can damage ports on the controller. A norman Run Plug does not have pins for those connections.
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01-05-2018, 09:16 AM | #8 | |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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Re: 2012 RXV brake problem - Curtis Controller
Quote:
Sent from my SM-G950U using Tapatalk |
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01-05-2018, 12:00 PM | #9 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 2012 RXV brake problem - Curtis Controller
Your Run Plug socket is totally missing! Why would someone cut it out like that? At least with the Curtis Controller, it's not used for the CAN Bus in a 2012, but in later years (2014 on) Curtis resumed use of the CAN Bus for communications with a GPS system. It looks like you are missing the wire that connects the motor brake to the controllers motor brake sense wire. That splits off of the Run Plug socket and connects to the controller so that it can sense the state of the motor brake. Without that wire, the controller will not pass its poweron testing. Where are you located? There is a way to disable that test in the controller, but it requires an OEM or higher level programmer to do it.
I'll see if I can get some pictures of the Run Plug socket and a Run Plug for you later. Bob |
01-05-2018, 12:18 PM | #10 |
Wild Gone
Join Date: Oct 2016
Location: Davie, FL
Posts: 633
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Re: 2012 RXV brake problem - Curtis Controller
In Ft. Lauderdale
The run plug and assembly is there but not used. You can tell all the wires were corroded. Looking at the wiring diagram, it looks like there should be 6 wires that run to the run plug area. 3 red, 2 black, and 1 black-white. All are there and accounted for. 2 pairs of those wires are twisted together. |
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