New UNIQUE Seat Switch Issue (4 long flashes)

   / New UNIQUE Seat Switch Issue (4 long flashes) #1  

hoffy02

New member
Joined
Sep 16, 2014
Messages
7
Location
Canonsburg, PA
Tractor
Bolens G194
new to me JD 4310, had it almost a year. Loader, backhoe, runs great. Love it

Few weeks into having it i got the classic "wont move forward or reverse".. I lurked on here for a while and found I needed to bypass the bad seat switch. Did that and it worked again for a few hours maybe.. I figured it could be a short further up the line, fast forward 5 more cuts and splices moving further up the main wiring bundle. All with the same result. Worked for a while then same failure code, and no reverse or forward. so far I have cut back these safety seat switch wires as far as where the main wiring bundle moves from under tractor into the main engine compartment right behind the break pedals on left side.
There is absolutely no pattern to what induces this failure and 4 long flashes. I worked as an electronics technician in the military and we lived and died on repeat-ability for troubleshooting. driving slow down the street, moving dirt, digging whatever.. It sometimes happens every 5 minutes, sometimes, I can use it for 2 days and no issue. this used to be just an annoyance as all i was doing was mostly dirt work. Now I have a 3 point mower, just hooked it up today, in my 5 minute test run, it did this sudden stop, 4 long flashes, 4 different times..
to further confuse my troubleshooting efforts, there is no pattern to what corrects the failure. Sometimes it starts driving again before the flashing sequence is completed. sometimes i have to let it low idle for 20 mins. sometimes hitting the steering wheel and cursing it to **** will make it move again..

Please, Oh wise gods of the TBN community.. Lend me some help!

CJ in PA
 
   / New UNIQUE Seat Switch Issue (4 long flashes) #2  
:welcome: to TBN

Maybe a trip to your Deere dealer for a computer check-down.

I don't understand the assumption this was a "wire short further up the line". But your electronics training may have encouraged that plan, rightly or wrongly.

Do you have the service tech manual ? Electrical schematics are in that.
 
   / New UNIQUE Seat Switch Issue (4 long flashes)
  • Thread Starter
#3  
Thansk Beenthere.
I do not have the manual.
If the switch was bad bypassing it would have fixed it, unless there was a short somewhere up the line still simulating an open switch at the seat.. At least that was my logic..Really hate taking any equipment to any dealers.. I dont trust them for even the easiest of fixes.
 
   / New UNIQUE Seat Switch Issue (4 long flashes) #4  
Just curious, were you finding broken wires? Or just splicing, to bypass, at every connector you came to?


I am thinking it might be some other sensor rather than the seat switch. Does it have an engine speed sensor, ground speed sensor, or PTO speed sensor? If so I would be looking at these.
 
   / New UNIQUE Seat Switch Issue (4 long flashes)
  • Thread Starter
#5  
No. I was not finding broken wires. Was just assuming there had to be a short (break) in the line somewhere. I知 sure it does have those sensors and will look into testing them.
Also, if there is one pattern 斗ike situation where it seems to happen more often, is when the tractor is up to running temperature. As in mowing for 30 minutes with no issue then loose forward and reverse. Again, no rhyme or reason to what makes it run again.
 
   / New UNIQUE Seat Switch Issue (4 long flashes) #6  
   / New UNIQUE Seat Switch Issue (4 long flashes) #7  
I would look at the other safety switches also. Could be you stopping to work on the wire is allowing it to cool or you are jiggleing it enough to get a loose connection to touch till switch heat back up or connections vibrate loose again. If a safety switch is over heating causing the issue not sure what they are called but get a spray can that is made to spray such with and lower the temp and see if that affects the switch. Could also be a relay. My experience with electrical have never found a bad wire but bad printed circuit yes. Switches and relays, yes.
 
   / New UNIQUE Seat Switch Issue (4 long flashes) #8  
Thansk Beenthere.
I do not have the manual.
If the switch was bad bypassing it would have fixed it, unless there was a short somewhere up the line still simulating an open switch at the seat.. At least that was my logic..Really hate taking any equipment to any dealers.. I dont trust them for even the easiest of fixes.

Shoot me your email, I have a PDF of the technical manual you’re welcome to

Joe
 
   / New UNIQUE Seat Switch Issue (4 long flashes) #9  
Poor ground somewhere?
 

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