48 volt sepex 1264 curtis controller problem

Dracermax · 01-31-2021, 12:30 PM

Picked up a 48 volt mpt around 2003 model to use around my shop . Had been setting a long time without batteries at it and wiring was a disaster. Clean all the wiring put a key switch edit put everything back together installed batteries have a full charge .solenoid was fried so I put a new one in it . Controller is showing a 3.1 flashing code. Which is main driver off line replace controller. I'm a boat and motorcycle mechanic by trade so I went down the list and checked everything. The controller is just not activating the solenoid. I can jump the solenoid and make the pedal work in forward. Voleage on these pins are off. J1 15 no voltage should be15 -17
J1 13 high voltage 13.97 should be 1.3.5
Any help would be great just going to use this cart around shop yard and trying to avoid buying a Expensive controller

kgsc · 01-31-2021, 01:17 PM

Here is the manual for the mpt.

Dracermax · 01-31-2021, 02:14 PM

Thanks thats the one iam using to Diagnose

kgsc · 01-31-2021, 02:21 PM

Check and see if there is a molex connector between the controller and pedal box. Those are known to fail

01-31-2021, 12:30 PM	#1
Dracermax Not Yet Wild Join Date: Jan 2021 Posts: 5	48 volt sepex 1264 curtis controller problem Picked up a 48 volt mpt around 2003 model to use around my shop . Had been setting a long time without batteries at it and wiring was a disaster. Clean all the wiring put a key switch edit put everything back together installed batteries have a full charge .solenoid was fried so I put a new one in it . Controller is showing a 3.1 flashing code. Which is main driver off line replace controller. I'm a boat and motorcycle mechanic by trade so I went down the list and checked everything. The controller is just not activating the solenoid. I can jump the solenoid and make the pedal work in forward. Voleage on these pins are off. J1 15 no voltage should be15 -17 J1 13 high voltage 13.97 should be 1.3.5 Any help would be great just going to use this cart around shop yard and trying to avoid buying a Expensive controller
Dracermax Not Yet Wild Join Date: Jan 2021 Posts: 5

01-31-2021, 02:14 PM	#3
Dracermax Not Yet Wild Join Date: Jan 2021 Posts: 5	Re: 48 volt sepex 1264 curtis controller problem Thanks thats the one iam using to Diagnose
Dracermax Not Yet Wild Join Date: Jan 2021 Posts: 5

01-31-2021, 02:21 PM	#4
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,176	Re: 48 volt sepex 1264 curtis controller problem Check and see if there is a molex connector between the controller and pedal box. Those are known to fail

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