Potentiometer Testing

riverracer · 05-14-2010, 08:39 PM

I have a 92 marathon.The pot has 4 wires.How do you test to see if you are getting the full range when pedal is pressed?

iaefebs · 05-15-2010, 08:25 PM

The two wires that lead to the the controller are the two you are interested in checking. The white and black wires that are on the spade clips position #2 & #3. The other 2 wires run to the FNR. When reverse is selected you pass through a resistor in the POT to give you 1/2 speed. Pull off the two wires on the controller and with the cart in forward attach an ohmmeter to the two leads. Ideally as you depress the accelerator pedal you won't see any reading till the hill brake kicks off then just before full pedal travel you should see a peak of 5000 ohm. This should be a smooth transition with no spikes.

kenjae · 07-25-2013, 03:01 AM

Can this part be bench tested?

05-14-2010, 08:39 PM	#1
riverracer Getting Wild Join Date: Jun 2007 Location: Charleston SC Posts: 111	Potentiometer Testing I have a 92 marathon.The pot has 4 wires.How do you test to see if you are getting the full range when pedal is pressed?

07-25-2013, 03:01 AM	#3
kenjae Not Yet Wild Join Date: Mar 2013 Posts: 1	Re: Potentiometer Testing Can this part be bench tested?
kenjae Not Yet Wild Join Date: Mar 2013 Posts: 1

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05-15-2010, 08:25 PM	#2
iaefebs Gone Wild Join Date: Nov 2008 Location: MI, West Coast Posts: 235	Re: Potentiometer Testing The two wires that lead to the the controller are the two you are interested in checking. The white and black wires that are on the spade clips position #2 & #3. The other 2 wires run to the FNR. When reverse is selected you pass through a resistor in the POT to give you 1/2 speed. Pull off the two wires on the controller and with the cart in forward attach an ohmmeter to the two leads. Ideally as you depress the accelerator pedal you won't see any reading till the hill brake kicks off then just before full pedal travel you should see a peak of 5000 ohm. This should be a smooth transition with no spikes.