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Old 08-15-2013, 08:05 AM   #1
24fan
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Default 1997 ezgo switches from forward to reverse while riding

First time posting. all other problems I have had I was able to fix by just reading the posts but this has me befuddled. No matter whether it is in f or r it will jump back and forth between the two. 1997 txt with dcs controls.Need any suggestions I can get.voltage on battery pack is 38.4. individual batteries are between 6.36 6.41.
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Old 08-15-2013, 08:21 AM   #2
scottyb
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Default Re: 1997 ezgo switches from forward to reverse while riding

You either have a short or the controller is going bad. Check the F1 and F2 wires for a short (see pic ) where they go through a loop at the battery box. Otherwise the control is probably going out.
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Old 08-15-2013, 10:45 AM   #3
24fan
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Default Re: 1997 ezgo switches from forward to reverse while riding

Thanks for the info. I had a skinned black wire but I repaired that and still have the same problem. Could someone please tell me how to check the controller before I spend that amount of money and the wife shoots me. should I have voltage on both sides of the solenoid big terminals at all times? I had replaced that with hopes of that being the problem.
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Old 08-15-2013, 11:10 AM   #4
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Default Re: 1997 ezgo switches from forward to reverse while riding

There is a resistor across the solenoid's big terminals, so you will measure voltage on both terminals all the time.

What it boils down to is whether the controller is being told to switch direction of travel or is it changing from F to R all by itself.

My suggestion would be to attach a DVM to PIN-4 (orange wire) to determine if the voltage from the reverse switch appears or disappears when the controller reverses direction while in motion.

If the voltage comes and goes, the problem is external to the controller.
If it stays steady ON or OFF, but the cart changes directions, it is a bad controller.

If it is the controller, replace it with a DCX400 and you'll have a speedy cart with a lot of torque.
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Old 08-15-2013, 11:32 AM   #5
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Default Re: 1997 ezgo switches from forward to reverse while riding

As fun as it sounds slamming it into reverse at speed planting my face in the windshield doesn't sound like fun

As JonnieB suggested the controller may be being told to go into reverse. Another quick check would be to disconnect the reverse wire from the micro switch on the shifter. If that fixes it, you have a bad micro switch. If not, the next step is check for reverse voltage at the controller
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Old 08-15-2013, 11:36 AM   #6
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Default Re: 1997 ezgo switches from forward to reverse while riding

Well it has 4.5 volts steady when the pedal is depressed and it is trying to change directions.where would you suggest I get a controller? Oh and thanks for the help
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Old 08-15-2013, 11:43 AM   #7
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Default Re: 1997 ezgo switches from forward to reverse while riding

Quote:
Originally Posted by 24fan View Post
Well it has 4.5 volts steady when the pedal is depressed and it is trying to change directions.where would you suggest I get a controller? Oh and thanks for the help
It has 4.5 volts when in Fwd and pedal is depressed ? Does that jump to 36 volts when it is in Rev ? If so, I would try disconnecting the Reverse wire from the micro switch and see if that 4.5 goes away. It acts like that switch is failing and it is not opening all the way
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Old 08-15-2013, 11:51 AM   #8
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Default Re: 1997 ezgo switches from forward to reverse while riding

Well KGSC glad to see someone else on here is from SC I am in mccormick. But the voltage stays the same unless I unplug the reverse microswitch then nothing but it still tries to change directions when I press the pedal
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Old 08-15-2013, 11:57 AM   #9
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Default Re: 1997 ezgo switches from forward to reverse while riding

24fan.....the place to go for your controller would be to Scottyb's cartsunlimited.net

http://www.cartsunlimited.net/Custom_Options.html
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Old 08-15-2013, 12:19 PM   #10
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Default Re: 1997 ezgo switches from forward to reverse while riding

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Originally Posted by 24fan View Post
Well KGSC glad to see someone else on here is from SC I am in mccormick. But the voltage stays the same unless I unplug the reverse microswitch then nothing but it still tries to change directions when I press the pedal
If I read this right you said the voltage went to 0 when you disconnected the rev micro but it still tries to change directions ? If so, that is probably a bad controller and that may have been caused by the micro starting to fail. I would check both switches but it sounds like the controller has had it.
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