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Unread 07-08-2011, 05:45 PM   #1
Not Yet Wild
 
Join Date: Jun 2011
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Default Solenoid not engaging; Potentiometer?

I have a 03 club car 48 volt. I have done all the possible troubleshooting i could think of to find out why the solenoid wont engage. The potentiometer recieves its input voltage with a blue wire(48v) from the key switch correct? The green output wire that goes to the 1st micro switch on the F&R switch has no voltage and does nothing when i press the gas. I figured this has to be my problem. Shouldnt it be outputing 48v to close the solenoid when i apply the gas pedal?
Where does the solenoid get its voltage to close? it has to be the green wire(which changes to white and black) right? The only other wire on the solenoid is the yellow one that goes into the OBC. Im guessing the yellow wire provides the ground. The cart charges fine so i guess the OBC is still functioning.

Also i used an ohm meter and checked the yellow wire at the controller from the potentiometer and it appears to functioning correctly, varies from 1 to 30.

Thanks for any help
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Unread 07-08-2011, 06:38 PM   #2
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Default Re: Solenoid not engaging; Potentiometer?

Verify with your voltmeter that the OBC is sending the negative to the solenoid... it can fail in this chore and still regulate the charge cycle... If you have the constant negative ~ then the trouble is on the positive side or with the solenoid itself..... never hurts to bring the activation currents to the solenoid via little jumper wires to verify it is working.
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Unread 07-08-2011, 06:39 PM   #3
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Default Re: Solenoid not engaging; Potentiometer?

there is another switch in the mcor it turns the solenoid on.
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Unread 07-08-2011, 09:59 PM   #4
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Default Re: Solenoid not engaging; Potentiometer?

Turns out after i swapped the potentiometer for a spare I had, the green wire I suspected was the problem gave me my 48 volts of output when the pedal was depressed and closed the solenoid. Problem fixed.
I just wish their was a diagram that would give us the correct voltages/outputs for the circuits, I could have found the problem sooner.

Thanks for the help guys.
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