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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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07-07-2017, 08:31 PM | #11 |
Getting Wild
Join Date: May 2017
Posts: 85
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Re: 2000 Ezgo TXT Series drive with no reverse
I have that, but the solenoid breakout portion seemed unclear. I think I've just been confused about diode polarity, and the voltage swings have been crazy out of the controller so I was hoping for an obvious answer =/
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07-07-2017, 08:43 PM | #12 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: 2000 Ezgo TXT Series drive with no reverse
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07-07-2017, 08:47 PM | #13 |
Getting Wild
Join Date: May 2017
Posts: 85
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Re: 2000 Ezgo TXT Series drive with no reverse
Thank you for clearing that up!
Off to measure voltages =) |
07-08-2017, 06:07 AM | #14 |
Gone Wild
Join Date: Mar 2014
Location: NE Indiana & SW Florida
Posts: 3,221
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Re: 2000 Ezgo TXT Series drive with no reverse
If a series cart goes in one direction, but not the other, the problem is in the F/R switch assembly. I would check to make sure the alignment on the switch is making the reverse contact.
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07-08-2017, 07:42 AM | #15 |
Getting Wild
Join Date: May 2017
Posts: 85
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Re: 2000 Ezgo TXT Series drive with no reverse
I checked the FNR switch for continuity, and took it out and cleaned all the contacts, but didn't get improvement. I'm not ruling it out completely though.
I did start back at the top of the diagnostics checklist, and the first weird reading I got was in the controller output section. Between B+ and B- I get pack voltage when the solenoid is engaged (which is correct) When I press the pedal, the voltage is not decreasing as expected (wheels are turning) Between M- and B+, voltage starts at 0 and when I press pedal, it spikes wildly up into 100s of volts, but settles at pack voltage if I keep the pedal fully pressed Comparing between M- and B+ does not match between B- and B+ Still thinking faulty controller at this point? Also, all of the tests say put the cart in forward, should I expect same results with it in reverse so I can diagnose? |
07-08-2017, 07:56 AM | #16 |
Getting Wild
Join Date: May 2017
Posts: 85
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Re: 2000 Ezgo TXT Series drive with no reverse
Also, I'm getting pack voltage across B+ to B- even when the cart is off. Is that right?
In forward, I get no reading from B+ to M- while off, but I get 27v on those same terminals in reverse. |
07-08-2017, 08:28 AM | #17 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: 2000 Ezgo TXT Series drive with no reverse
That's normal. Test the F&R micro switch . Likely not getting triggered in reverse - could be a mechanical problem or the F&R is bad
F&R continuity can produce false positive test results. |
07-08-2017, 09:34 AM | #18 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: 2000 Ezgo TXT Series drive with no reverse
Quote:
Bob |
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07-08-2017, 09:41 AM | #19 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: 2000 Ezgo TXT Series drive with no reverse
Quote:
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07-08-2017, 10:12 AM | #20 |
Getting Wild
Join Date: May 2017
Posts: 85
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Re: 2000 Ezgo TXT Series drive with no reverse
Thanks for the explanation BobBoyce! That was actually quite helpful!
As far as microswitches, I'm getting continuity on both. The one connected to the charging receptacle has continuity on both forward and reverse, while the other has it only in reverse. However, I had to unplug the orange cable that goes to pin 3 on the controller, otherwise I was getting a high resistance continuity reading. So I removed all the wires from both microswitches and checked them for resistance. The first one (forward?) had a reading of 1.7 ohms when activated and the other read 32 ohms. |
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