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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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11-06-2021, 02:05 PM | #21 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,123
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Re: 2010 YDRE3, No history, won't run, trouble shooting
The throttle position sensor should never fail by burning up. They might wear out over many years of service. If they are getting any overheat damage, there has to be a problem with the controller.
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11-06-2021, 04:16 PM | #22 |
Gone Wild
Join Date: Jul 2020
Location: NC
Posts: 770
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Re: 2010 YDRE3, No history, won't run, trouble shooting
Don't know what caused the other new one to fail. Everything about the controller seems to work...but if it is pushing too much power through the TPS, figured it could burn it up. Was hoping there was a way to test, prior to just throwing parts at it. The original TPS no longer has spring return, so it likely just wore out...the recent new one seems to not change resistance as the throttle connector socket turns indicating it is bad. May have been bad new, I didn't buy it, cart owner indicated it was new, it looks new, and he was able to produce the original. I have a third, brand new, in the box TPS to install, just didn't want to waste it. I'll give it another day to see if there are any other ideas on how to test prior to putting the new one in, then I will give it a shot.
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11-06-2021, 05:58 PM | #23 |
Gone Wild
Join Date: Jun 2011
Location: Northern Indiana
Posts: 2,813
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Re: 2010 YDRE3, No history, won't run, trouble shooting
Original one may have worn out and been replaced with a Chinese E-bay part that was bad right out of the box. You could test the resistance of the new one before you ever put it on the cart. That signal from the controller is low voltage. I'm not certain off the top of my head exactly what that voltage is but probably something in the 5 to 15 or so range. The controller is reading the resistance in order to determine throttle position.
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11-06-2021, 06:21 PM | #24 |
Gone Wild
Join Date: Sep 2020
Location: Germany
Posts: 1,966
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Re: 2010 YDRE3, No history, won't run, trouble shooting
I would just write something similar, measure the resistance of the new sensor out of the cart and give it another try... Sensor should be OEM no. JW2-H5885-00.
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11-06-2021, 07:33 PM | #25 |
Gone Wild
Join Date: Jan 2009
Location: Ocala, FL
Posts: 384
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Re: 2010 YDRE3, No history, won't run, trouble shooting
The sensors operate with 5 volt excitation from the controller. Very low current. They do not "burn up". They do tend to get contaminated with water and dirt. Sometimes simply flushing them out with contact cleaner will restore operation.
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11-07-2021, 07:06 AM | #26 |
Gone Wild
Join Date: Sep 2020
Location: Germany
Posts: 1,966
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Re: 2010 YDRE3, No history, won't run, trouble shooting
As Biphase says, it's a 5v reference circuit, also used in cars/trucks for different sensors.
Quote The foundational concept is simple: a 5-volt reference flows through a sensor containing a resistance that varies according to changes in temperature, pressure or position. Due to this variable resistance, the signal return voltage to the ECM is always less than the reference voltage. Unquote |
11-07-2021, 05:19 PM | #27 |
Gone Wild
Join Date: Jul 2020
Location: NC
Posts: 770
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Re: 2010 YDRE3, No history, won't run, trouble shooting
Thanks guys, put it in this morning and it worked fine. I just didn't want to burn it up if it the controller was pushing too much current to it....All good though.
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