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Old 06-21-2019, 08:26 AM   #11
Fairtax4me
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Default Re: 97 club car 48v troubleshooting & motor test

Like Nole said, if the throttle signal is not correct at the controller you will just get a hum noise from the motor. Test the throttle signal as he suggested.
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Old 06-21-2019, 09:10 AM   #12
Purpleharley61
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Default Re: 97 club car 48v troubleshooting & motor test

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Originally Posted by Fairtax4me View Post
Like Nole said, if the throttle signal is not correct at the controller you will just get a hum noise from the motor. Test the throttle signal as he suggested.
Ok will do. I have to chk volts going in and out of controller also as i havent yet
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Old 06-21-2019, 12:55 PM   #13
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Default Re: 97 club car 48v troubleshooting & motor test

Here's how the black controller should run your solenoids if working normally. When you turn the key on the main solenoid should click ON. If you do nothing else you will hear it click OFF in 10 to 45 seconds (I've had two of them and the current one times out quicker). After you hear it click off by itself and you press the pedal you should hear both solenoids activate together (this assumes the dynamic brake solenoid hasn't been bypassed or disabled by a prior owner).
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Old 06-21-2019, 01:10 PM   #14
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Default Re: 97 club car 48v troubleshooting & motor test

Ok thanks for all the knowledge. I work a day job so I work on cart in the evening if im not to tired lol. I have a bunch of test to do from this thread.

Thanks for everyones input!
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Old 06-21-2019, 08:08 PM   #15
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Default Re: 97 club car 48v troubleshooting & motor test

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Originally Posted by NoleFan4Ever View Post
If your throttle signal is low you will only get a hum at the motor. Ensure your MSP is working correctly and delivering the correct signal.....

Also ensure the voltage out the controller is correct if it is getting the correct input from the throttle.
With key switch On, Run/Tow switch in the Run position, Fwd/Rev rocker switch in the Fwd position (and also have the back jacked up off the ground).
Get your DVM and place the black (–) probe at the motor A2 (white wire) and connect the red (+) probe at the motor A1 (green wire) and slowly depress the Go Pedal. When the throttle MS closes (clicks), the voltage reading should increase from ~5vdc gradually going up to to approximately ~45-48vdc (could be higher) with the accelerator pedal fully pressed.
Ok I did this test and had no reading on my meter at all
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Old 06-21-2019, 09:36 PM   #16
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Default Re: 97 club car 48v troubleshooting & motor test

Did you verify the throttle signal was good?
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Old 06-21-2019, 10:08 PM   #17
Purpleharley61
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Default Re: 97 club car 48v troubleshooting & motor test

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Did you verify the throttle signal was good?
No i did not sorry not grasping all of this at once here.
Thats the yellow wire coming out of the potentiometer
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Old 06-21-2019, 11:42 PM   #18
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Default Re: 97 club car 48v troubleshooting & motor test

Yes, as described previously. You need a throttle signal to tell the controller what to send to the motor.
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Old 06-22-2019, 12:25 AM   #19
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Default Re: 97 club car 48v troubleshooting & motor test

Ok so if no signal or low signal the i need to replace that or do we need to test more?
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Old 06-22-2019, 07:42 AM   #20
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Default Re: 97 club car 48v troubleshooting & motor test

You can do either. That should be a V-glide style MSP (Black Pie shaped box) by the batteries. If it is low or erratic there are internal problems you can chase or you can upgrade to an MCOR4 conversion which is what is on today's carts.
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