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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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10-26-2021, 01:05 PM | #1 |
Not Yet Wild
Join Date: Aug 2021
Posts: 7
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2010 48v RXV Brake Issue
I have a 2010 48v RXV with the Danaher Controller that locked up on me 2 weeks ago while driving around the neighborhood and had to perform the emergency brake release to trailer it. I've since replaced the motor brake, checked and cleaned all connections, pulled off the run switch and put it back in, tested solenoid connections and voltage to the controller, tested the brake switch behind the pedal, and the connection that the brake connectors run power from. Still nothing. I hear a click but no motor brake release or click when the accelerator is depressed. Below are some of the stats from my multimeter:
1) Battery Pack--52v; each battery is at 13v 2) Plug from the controller to motor brake--49v 3) Plug on motor brake--0 ohms 4) 48v side of the solenoid--52v 5) Switch side--0 when off and 52v when in neutral 6) The small post to the controller harness--52v when in neutral--0v when off 7) The other small one--52.1v when in neutral--0v when off Connector into the back of brake pedal--5v 9) Connector from the controller to brake assembly--27v 10) Blue wire at charging port--52v when unplugged. |
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10-26-2021, 01:27 PM | #2 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: 2010 48v RXV Brake Issue
I helped out a buddy with one of these a couple years ago and it was a bad solenoid. That's a possibility but there are other things that could cause it to fail like this.
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10-26-2021, 01:53 PM | #3 |
Gone Wild
Join Date: Sep 2020
Location: Germany
Posts: 1,968
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Re: 2010 48v RXV Brake Issue
Sounds like the motor brake, not working with pack voltage and you should read 25-28ohm on it. What brand is the brake?
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10-26-2021, 01:54 PM | #4 |
Not Yet Wild
Join Date: Aug 2021
Posts: 7
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Re: 2010 48v RXV Brake Issue
Would a bad solenoid cause the motor brake to read at 0 ohms?
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10-26-2021, 01:56 PM | #5 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: 2010 48v RXV Brake Issue
0 ohms sounds bad for the brake but I don't know what it should read. I would guess that it should be a few hundred ohms but that's a Wild A$$ Guess.
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10-26-2021, 01:58 PM | #6 | |
Not Yet Wild
Join Date: Aug 2021
Posts: 7
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Re: 2010 48v RXV Brake Issue
Quote:
SKU:8207 from golfcartking |
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10-26-2021, 02:03 PM | #7 |
Not Yet Wild
Join Date: Aug 2021
Posts: 7
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Re: 2010 48v RXV Brake Issue
Also within the order is a Navitas 600a controller for Danaher, EZGO Resistor Precharge for 400a Solenoid, and this solenoid https://www.golfcartking.com/univers...duty-solenoid/, but I wanted to test the brake before installing the rest, which is when I found out that it was getting 0 ohm
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10-26-2021, 02:07 PM | #8 |
Gone Wild
Join Date: Sep 2020
Location: Germany
Posts: 1,968
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Re: 2010 48v RXV Brake Issue
The replacement brake seems to be ok, but you should get the ohms reading 25 - 28 with the brake disconnected (coil resistance).
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10-26-2021, 02:26 PM | #9 |
Gone Wild
Join Date: Sep 2020
Location: Germany
Posts: 1,968
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Re: 2010 48v RXV Brake Issue
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10-26-2021, 02:28 PM | #10 |
Not Yet Wild
Join Date: Aug 2021
Posts: 7
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Re: 2010 48v RXV Brake Issue
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