Txt pds problems-

[razerface]

I bought a cart with the pds controller. I knew it did not work when purchased, but thought i was smarter then the guy that tried to fix it before. I guess I’m not,,,,,i need help.

With key on or off, there is 39v at solenoid on batt side, with 38.5 on controller side, and on controller at A1 and motor at A1, but cart is stationary. The solenoid makes no noise when pedal is pressed. Scared me when i got voltage at motor always but no movement of cart. This is without touching go pedal.

Also curious about the white jumper wire on controller? It is in a 5 wire plug.

[mgray70]

The motor always has the positive voltage. The controller regulates how much negative based on the throttle position through the M- cable. You need to figure out why your solenoid isn't clicking.

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[razerface]

What does the solenoid do when it clicks if the voltage is going straight thru it all the time?

[mgray70]

Originally Posted by razerface

What does the solenoid do when it clicks if the voltage is going straight thru it all the time?

The solenoid is a big switch that lets high current flow through to the controller and motor. It works with the foot switch. Its main purpose is for safety. It breaks the current when the pedal is released. The reason why there is voltage going through all the time, is because it has a resistor that goes between both large post, to let a little voltage across the solenoid to the controller to keep the capacitors full. The purpose for that is to keep the solenoid contacts from arching. Basically to protect the contacts.

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[razerface]

Ok. Learning already. I will try to figure out why solenoid does not click. Will a bad controller stop the solenoid?

Is the go pedal the thing that sends a signal to solenoid to work?

[mgray70]

Originally Posted by razerface

Ok. Learning already. I will try to figure out why solenoid does not click. Will a bad controller stop the solenoid?

If the solenoid driver fails it can. Take a volt meter and check the voltage at the small wires on the solenoid. Place the positive lead on the yellow wire terminal, and the negative on the blue wire terminal. When you press the pedal, you should have pack voltage. If you do not have pack voltage, the controller, or the foot switch could be bad. If you do get voltage, the solenoid is bad. The controller sends the negative to the blue wire when the pedal is pressed which makes the solenoid close.

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[razerface]

Making progress. I figured out the last guy wired a new ignition switch incorrectly. After fixing that, the solenoid clicked very weakly, but would have to turn ign switch off, then back on to make it click when pressing pedal. It ran in reverse for a few seconds, but would not repeat.

I did the test above recommended by mgray70 and it showed pack voltage, so i have a solenoid on the way.

I’ll be back.

[kgsc]

If the reverse buzzer works then you could try to put it in diagnostic mode to listen for codes. Key on. N to R 5 times ending in N. It will beep 1-4 times to tell you what chip is in it. After that push the pedal and listen for codes.

[razerface]

Well, not as clearcut as i hoped. I installed new solenoid. No clicking. Now voltage on batt side is 39.1 and on controller side it is 17v. The resister is hot! Where do i buy a new resister?

[kgsc]

If the resistor is hot the solenoid isn’t closing when told to. You can remove it for testing. If you put your leads on the small yellow and blue wires on the solenoid that should go to pack voltage when the pedal is pushed.