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10-14-2021, 11:19 AM
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#1 |
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Not Yet Wild
Join Date: Jun 2008
Posts: 20
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ez-go 36v PDS problem
I am currently working on a 2001 EZ-GO with a Curtis pds controller that was working fine. Now it will not run in forward it runs in reverse just fine.
i have put it in diagnostic. i get 3 beeps then 4 beeps which i think indicates open field but only in the forward direction i have ohmed out the fields and they read fine. i am not sure it the field could be open in forward but not in reverse. so i am leaning towards a bad controller. not sure at this point any input would be helpful. |
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10-14-2021, 11:36 AM
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#2 |
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Gone Wild
 Join Date: Dec 2009
Location: Aiken, SC
Posts: 13,141
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Re: ez-go 36v PDS problem
Switch it to tow and reverse the black and white field wires on top of the controller. Flip it to run and try it. Should run reverse in forward and forward in reverse. If it now fails to go in reverse I would say the controller has failed.
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10-14-2021, 11:59 AM
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#3 |
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Not Yet Wild
Join Date: Jun 2008
Posts: 20
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Re: ez-go 36v PDS problem
thanks.
i reversed the field and it goes in forward. so i guess it is time to replace the controller. thanks again |
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10-14-2021, 12:07 PM
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#4 | |
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Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: ez-go 36v PDS problem
Quote:
I don't have a schematic for a Curtis 1206MX controller, so I use a generic diagram of an H-bridge that is often used for the a sepex controller's low power output to the field windings. First drawing shows amp flow for Forward and second shows amp flow for Reverse. Different MOSFETs are used for forward and for reverse so one direction can work and the other one doesn't. Since you get the error code with R selected, the controller is being told to do reverse and is trying to. Therefore the controller is bad. Replace it with an Alltrax XCT48400-PDS user programmable controller. That'll up the speed to about 24MPH. |
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