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Old 10-04-2018, 09:32 AM   #11
Sergio
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Default Re: Backward Throttle Signal

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Originally Posted by Muddog View Post
I'm using purple and yellow to J2 & J3.
Using throttle setting 0.
Both the mcor 1 and 4 show same results on programmer.
Pedal down 0% throttle, pedal up 100%.
Don't worry about what the Controller is reporting, You need to check what the MCOR is reporting.

While the wire colors You indicated, Purple and Yellow, would be the correct colors for a "increasing range throttle" connections, depending on the cart wiring they may not actually go to the correct pins in the MCOR.

If You measure the resistance directly on the 2 wires after you disconnect them from Controller J2 and J3, You will know for sure.

I can not imagine the MCOR1 or MCOR2 would work as a 0-5kΩ throttle since they will never get below that Controller 50Ω requirement for "Pedal UP", the MCOR wiper is around 1kΩ.

The MCOR4 should work better since it has a near 0Ω wiper, but You may need a resistor in parallel with the MCOR to keep the entire Pedal travel responsive as the MCOR4 will reach 5kΩ before the Pedal is all the way down.


This is where those wires should terminate on the MCOR itself.

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Old 10-04-2018, 10:22 AM   #12
Muddog
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Default Re: Backward Throttle Signal

Removed yellow and purple mcor4 wires from controller.
Reading 5 ohms pedal up, around 450 pedal down.
The cart was working with original controller until 2 days ago.
Nothing has been changed, except now the accelerator it backwards.
It is doing the same with the mcor4 installed.
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Old 10-04-2018, 10:31 AM   #13
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Default Re: Backward Throttle Signal

Quote:
Originally Posted by Muddog View Post
Removed yellow and purple mcor4 wires from controller.
Reading 5 ohms pedal up, around 450 pedal down.
The cart was working with original controller until 2 days ago.
Nothing has been changed, except now the accelerator it backwards.
It is doing the same with the mcor4 installed.
That signal is all wrong....

Is the 3rd wire from the MCOR cut right at the plug or could it be shorting against something?
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Old 10-04-2018, 10:32 AM   #14
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Default Re: Backward Throttle Signal

The 3rd wire is cut and taped.
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Old 10-04-2018, 10:35 AM   #15
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Default Re: Backward Throttle Signal

You may need to unplug the MCOR 3 pin connector and measure the resistance right at the MCOR pins, You may have an issue with the wires coming from the MCOR, like being pinched under the batteries.
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Old 10-04-2018, 10:56 AM   #16
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Default Re: Backward Throttle Signal

My old craftsman voltmeter has bit the dust. It was giving false readings.
Put new ohmmeter on mcor4, it is reading pedal up 5400 ohms, pedal down 390 ohms
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Old 10-04-2018, 11:08 AM   #17
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Default Re: Backward Throttle Signal

Quote:
Originally Posted by Muddog View Post
My old craftsman voltmeter has bit the dust. It was giving false readings.
Put new ohmmeter on mcor4, it is reading pedal up 5400 ohms, pedal down 390 ohms
As You know, that is backwards from a 0-5kΩ throttle setting.

Your values are closer to a throttle type 4 or 1.
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