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Old 11-30-2022, 02:37 PM   #1
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Join Date: Aug 2015
Posts: 75
Default Yamaha Drive Controller issues

Hey yall.

I have a Yamaha drive with the moric controller. It came in with a bad controller. After replacing it the cart still isn't running, but does show some signs of life now, as the solenoid is cycling, and the speed sensor is functioning.

I suspect that the new controller is faulty also, even though I know that is rare. Has anone else experienced this?

What leads me to believe that is on the blue, and black wires to the throttle position sensor I am not getting a resting voltage, or an accelerator pressed voltage. I also checked any combination of the 3 wires and still no voltage. Continuity checks from the controller plug to the sensor all check good.

I also swapped the solenoid with a known good one for good measure.

Any help is appreciated,

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Old 11-30-2022, 04:49 PM   #2
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Join Date: Sep 2020
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Default Re: Yamaha Drive Controller issues

This is the test procedure for the TPS:
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Old 11-30-2022, 05:10 PM   #3
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Join Date: May 2012
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Default Re: Yamaha Drive Controller issues

I have two drives and the Moric controller fails early and often. I have Alltrax controllers in both now and they are great - and you can connect them to a laptop to diagnose issues and tune the performance. I would send it back and get an Alltrax.
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