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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.



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Old 06-14-2021, 06:55 PM   #11
Gbasista88
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Default Re: 2000 ezgo txt series electric issue

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Originally Posted by JohnnieB View Post
The test points and voltage readings don't match.

From M- to B+, the voltage ought to climb from 0V to battery pack voltage as pedal is pushed.

From B- to M- the voltage ought to start at pack voltage and decrease to 0V as pedal is pushed.
So if i have lead on b+ and other lead on m- it tells me I’m at 35.5v if i push the gas slowly it jumps to 37.5v

If i hold one lead on B- and other to M- it’s at 1.0v and if i slowly push pedal down it goes to 0v
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Old 06-14-2021, 06:59 PM   #12
Gbasista88
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Default Re: 2000 ezgo txt series electric issue

If i hold the read lead to the positive battery pack and other lead to each lug on the motor they are all at 35.5v and when pedal is pushed slowly it goes to 37.5v
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Old 06-14-2021, 07:03 PM   #13
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Default Re: 2000 ezgo txt series electric issue

If i do tests from positive battery pack to each bolt on the f/r switch.... the bottom bolt (A) from when the switch is mounted.
(A) reads 0.0v pedal up or down
B,C,D read 35.5v pedal up and 37.6v pedal down
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Old 06-15-2021, 12:47 PM   #14
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Default Re: 2000 ezgo txt series electric issue

Any other suggestions ? Cause I’m lost lol
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Old 06-15-2021, 12:53 PM   #15
camaroluvz28
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Default Re: 2000 ezgo txt series electric issue

Hmm only other thing I can think of would be to look between the controller and F & R at factory wiring harness...there is a small white 4 pin connector that connects harness, pull that apart and check pins inside for burn marks or corrosion...it is a common weak point in series carts...apart from that I'm scratching my head...
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Old 06-15-2021, 01:10 PM   #16
Gbasista88
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Default Re: 2000 ezgo txt series electric issue

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Originally Posted by camaroluvz28 View Post
Hmm only other thing I can think of would be to look between the controller and F & R at factory wiring harness...there is a small white 4 pin connector that connects harness, pull that apart and check pins inside for burn marks or corrosion...it is a common weak point in series carts...apart from that I'm scratching my head...
There is a burn mark on the green pin but i still have continuity all the was to the pedal
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Old 06-15-2021, 01:11 PM   #17
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Default Re: 2000 ezgo txt series electric issue

Last night i was doing the test for volts to wash stud on motor and not getting anything
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Old 06-15-2021, 01:13 PM   #18
camaroluvz28
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Default Re: 2000 ezgo txt series electric issue

I personally always cut that connector out and reconnect with butt connectors just to eliminate that as a problem...burn mark means weak point...worth a shot for little expense...
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Old 06-15-2021, 06:41 PM   #19
JohnnieB
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Default Re: 2000 ezgo txt series electric issue

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Originally Posted by Gbasista88 View Post
So if i have lead on b+ and other lead on m- it tells me I’m at 35.5v if i push the gas slowly it jumps to 37.5v

If i hold one lead on B- and other to M- it’s at 1.0v and if i slowly push pedal down it goes to 0v
Quote:
Originally Posted by Gbasista88 View Post
If i hold the read lead to the positive battery pack and other lead to each lug on the motor they are all at 35.5v and when pedal is pushed slowly it goes to 37.5v
Quote:
Originally Posted by Gbasista88 View Post
If i do tests from positive battery pack to each bolt on the f/r switch.... the bottom bolt (A) from when the switch is mounted.
(A) reads 0.0v pedal up or down
B,C,D read 35.5v pedal up and 37.6v pedal down
Unless otherwise stipulated, all voltage measurements are made with the negative (black) test lead on the battery pack's main negative terminal.

When a different reference point is stipulated, the place for the negative test lead is typically the first one mentioned. So "From M- to B+" terminals means the black test lead on the controller's M- terminal and the red test lead on the controllers B+ terminal.

The most informative voltage measurement for troubleshooting is from the controller's B- terminal (black test lead) to the controller's M- terminal (red test lead. If you don't get full battery pack voltage when pedal is pushed just far enough to make solenoid click, then there is a bad cable, or connection or set of contacts in the high amp circuit. (Highlighted in red on the schematic posted earlier.)

You are only getting 1.0V, so there is a bad set of contacts, or connection or cable somewhere in the thick cables (13 of them) or contacts (5 sets) or connections (26 of them). Leave the black test lead on the controller's B- terminal and go looking for the missing voltage with the red test lead.
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Old 06-15-2021, 07:15 PM   #20
Gbasista88
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Default Re: 2000 ezgo txt series electric issue

Quote:
Originally Posted by JohnnieB View Post
Unless otherwise stipulated, all voltage measurements are made with the negative (black) test lead on the battery pack's main negative terminal.

When a different reference point is stipulated, the place for the negative test lead is typically the first one mentioned. So "From M- to B+" terminals means the black test lead on the controller's M- terminal and the red test lead on the controllers B+ terminal.

The most informative voltage measurement for troubleshooting is from the controller's B- terminal (black test lead) to the controller's M- terminal (red test lead. If you don't get full battery pack voltage when pedal is pushed just far enough to make solenoid click, then there is a bad cable, or connection or set of contacts in the high amp circuit. (Highlighted in red on the schematic posted earlier.)

You are only getting 1.0V, so there is a bad set of contacts, or connection or cable somewhere in the thick cables (13 of them) or contacts (3 sets) or connections (26 of them). Leave the black test lead on the controller's B- terminal and go looking for the missing voltage with the red test lead.

I will do that when home in about an hour.
I’m assuming all the cables and contacts your talking of are at the motor, at the battery terminals, the fnr switch and the controller?
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