Discussion:
Komastu FG30HT-16

I have exclamation point that will flash. This is not the check engine light. All fluid levels are good, brake switches good. Anybody have any info on these units???? Thanks in advance
  • Posted 13 Nov 2013 00:42
  • Discussion started by MacGyver
  • Wisconsin, United States
namaha01@hotmail.com
Showing items 1 - 6 of 6 results.
Tyrone, i have this same exact problem. Did you ever determine what the cause was??

Thank you
  • Posted 25 Oct 2021 01:10
  • Reply by Jason_Worker
  • Georgia, United States
I have a komatsu fg25st-16 with seat switch flashing. Can still drive forward and reverse, no lifting up or down, no tilt, have side shift and open and close on fourth function. I have 12v to seat switch and good ohms from switch to plug. Have not traced wires any further. This unit recently had motor and trans out. Have double check that all plugs and grounds have been put back have not found any out of place. Was fine until now. Any help greatly appreciated.
  • Posted 18 Feb 2016 09:36
  • Reply by Tyrone
  • Georgia, United States
You are welcome.
  • Posted 14 Nov 2013 15:20
  • Reply by L1ftmech
  • Tennessee, United States
Yup, dash bulb burnt out. Two dollar fix, thanks again for the info.
  • Posted 14 Nov 2013 08:20
  • Reply by MacGyver
  • Wisconsin, United States
Thanks for the info, I will check this out and get back to you.
  • Posted 13 Nov 2013 02:44
  • Reply by MacGyver
  • Wisconsin, United States
It is indicating a problem with the seat switch interlock system.
Operator Presence Sensing, called KOPS by Komatsu.
If all the travel and mast functions are still good, make sure that the neutral indicator lamp on the monitor still burns when you are in Neutral, and that it comes on and flashes if you rise off the seat for more than 2 seconds while the transmission is in forward or reverse.
If the Neutral lamp bulb burns out, the KOPS controller deems that bulb failure as a defect and will make the KOPS trouble lamp flash to indicate a defective condition.
  • Posted 13 Nov 2013 02:19
  • Reply by L1ftmech
  • Tennessee, United States

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