2012 RXV barely moves

[mckenzierei]

Hi all,

My 2012 EZGO RXV was working fine until suddenly when I put it in forward or reverse, it barely moves. There is a shudder sound coming out of the hog so my first thought was I had a slipped hub. Upon taking the rear tires off and inspecting the hubs, there is no damage to the teeth and the hubs are not slipping. I then inspected the batteries, in which I have 12 volts across each battery and 48 volts across all of the batteries under full load. I will get a acid tester tomorrow to confirm there's nothing going on with the batteries.

Next, I tested the voltage before the and after the speed controller. There is 48 volts before the speed controller and only 24 volts after the speed controller. By the way, I have a Danaher Motion controller (83A21102A). There are 3 legs coming from the controller to the motor so I'm not sure what these are and if I am measuring the voltage correctly.

This is as far as I have gotten. I stumbled across this forum so I thought I would reach out. Any suggestions? Thanks everyone!

[HiTechRedNeck]

Stop !!!
Do not poke around on RXV wire harness !!!
Asking for disaster.

Controller for RXV's rarely fail. Last thing to worry about.

RXV motor is 3 phase A.C. Motor. Voltage and frequency change rapidly and it is hard to get a meaningful voltage reading.


The most likely cause of RXV not moving and shuttering is a bad parking brake.

Easy to check.

1) key off.
2) lift seat put cart in "tow"
3) key to "n"

Does cart push/roll freely?

if no--
you probably have a bad parking brake.

If cart does not roll freely, post so we can help you change the brake.

[gkeil]

I have a 2009 EZGO RXV golf cart.

If I do the above you mentioned, the cart will not move?

[cgtech]

Originally Posted by gkeil

I have a 2009 EZGO RXV golf cart.

If I do the above you mentioned, the cart will not move?

Not being a jerk, but start a new thread about your cart issue. We will be glad to help.

[mckenzierei]

Thanks HiTechRedNeck. I will do that today and post my results.

[mckenzierei]

The cart rolls freely with it in tow mode and in neutral. What do I try next? Thanks in advance

[HiTechRedNeck]

Good idea CG.

Please start a new thread.

If cart rolls freely, next step is to hook to a handheld code scanner.
This will require taking cart to reputable shop.

Without knowing what is causing problem, we might take a while to get it right.

Might be encoder. it could be mechanical.
Good tech w/handheld should be able to pinpoint .

[mckenzierei]

Will do and I will keep the thread updated with progress in case anyone else is having the same problem. Thanks!!!

[mckenzierei]

It was the speed sensor. Replaced and now works great. Just keeping the thread up to date in case anyone else has the same issue.

[cgtech]

I would not just replace the encoder for this problem. Many different errors cause erratic behaviour for RXV. Its really hard to pinpoint without a handheld scanner. All you can do is "test for whats right". Many parts on rxv are limited in "testability" without a scanner or oscilloscope (gonna have a hard time reading a 64 step encoder with a voltmeter). The troubleshooting guide available here is best you can get without a handheld scanner/programmer.