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Sectot EV not engaging 4 wheel drive

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The  dashboard display  shows a blinking “o”. Four wheel drive does not engage. The accustomed engagement sound is no longer heard. Has anyone a suggestion on where I might troubleshoot? Thanks. 

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Is it a manual shift? Or electronic? If it's mechanical, then check the cable through to the front differential. See if you can manually operate the linkage going into the differential 

If it's electronic, then you're probably going to have to disconnect the shifter, and see if you can activate the lever going into the differential by hand. 

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41 minutes ago, kenfain said:

Is it a manual shift? Or electronic? If it's mechanical, then check the cable through to the front differential. See if you can manually operate the linkage going into the differential 

If it's electronic, then you're probably going to have to disconnect the shifter, and see if you can activate the lever going into the differential by hand. 

This is an all electric SxS. There is voltage at the switch but I do not where it goes from there. Hisun will not let me see a schematic. Getting to and from my servicing dealer is a full day and $200 trailer rental. Hoping to get some guidance on where to look. I presume there is a solenoid and some kind of actuator. Anyone know what those look like? Pics? Thanks. 

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Have you tested the switch itself for proper function?

I know that I said differential earlier. Don't really know what I was thinking. It probably handles 4wd at what would be the transfer case on a truck. Or it's possible that there's only the transmission. But if you can see where the hi/lo 4wd actuator goes. It'll probably be close by. If you follow the wire from the switch, you might have some luck. But it could easily be a grounded circuit, so you need to chase those wires if at all possible. 

Sometimes when I don't know what a part looks like. I'll Google for that part for sale. If it pops up, now you know what it looks like. And that makes it much easier to find. It's a long shot in this case. But sometimes it works. 

 

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I get 6.3 volts at each switch pole. I haven’t identified the solenoid or actuator yet

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The switch is just an on off switch? If it's that simple, there should be a voltage difference between on, and off.

Being electrically activated, I'd expect there's a relay involved somewhere. Look in the fuse panel. Relays are notorious for being troublesome. The good news is they're cheap, and easy to diagnose, and replace. 

Sorry for all the guesswork, but I'm not familiar with your machine. Mine is much older, and a totally different brand altogether. I'm thinking that it sounds like it's electrical, based on the weird dash readout.

Hopefully this forum activity will alert someone more familiar with your unit?

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You may also  check your 12 volt battery voltage. I have seen cases where the DC/DC converter (48Volt to 12Volt) stoped working and thus not charging the 12 volt battery anymore.  I think the  front differential electric shifter is powered by the 12 volt battery, that could explain the shifter not engaging if the battery is low. The 12volt battery is located under the driver seat. It powers the instrument panel + winch + main interlock relay on the 48V volt battery bank.  

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Thanks for that, Remy. I didn't realize that there was a 12 volt system at all! I will get to digging in on these suggestions on Sunday afternoon. Many thanks to all!

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TBH, I had no idea that anyone made a 4wd electric buggy. Very interesting stuff. I was hoping the thread exposure would bring along someone that understands a bit about how these work. What little expertise I have, is with mechanical stuff.

Please post details about any progress, so that others can benefit from what you find. Especially if you find a wiring diagram. Those things are scarce as hens teeth. There's so little information out there about these Hisun models. Good luck!

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