KIOTI no start, electrical

   / KIOTI no start, electrical #1  

stancel

New member
Joined
Sep 7, 2016
Messages
15
Location
Slidell, La
Tractor
Yanmar YM2000
I am out of ideas with my CX2510. It will crank when cold, but once warmed up it isn't getting power to the solenoid and doesn't turn over.

I have checked the PTO, Neutral, and Clutch safety switches and all have 12v passing through. Tested starter relay and ignition switch and both are good. Also verified the start fuse and made sure I was getting 12v on both sides. I don't think it is a short or compromised wire insulation because it only happens after it warms up, then no problems after sitting a couple hours.

I can unplug the solenoid and jumper it no problem and it operates as it should.

Anybody have any ideas?
 
   / KIOTI no start, electrical #2  

Roadworthy

Elite Member
Joined
Aug 24, 2019
Messages
3,073
Location
Southeast Washington
Tractor
Kubota L2501 HST,
If you can unplug the solenoid and jumper it for the tractor to operate normally it may be the solenoid. More specifically it may have an intermittent connection internally - perhaps a bad solder joint. Take a resistance reading of its coil when cold. Remove it from the tractor and pop it into your oven (not microwave!) and heat to 150 or so. Take the readings again. If they increase dramatically you've found your problem.
 
   / KIOTI no start, electrical
  • Thread Starter
#3  
OP
S

stancel

New member
Joined
Sep 7, 2016
Messages
15
Location
Slidell, La
Tractor
Yanmar YM2000
If you can unplug the solenoid and jumper it for the tractor to operate normally it may be the solenoid. More specifically it may have an intermittent connection internally - perhaps a bad solder joint. Take a resistance reading of its coil when cold. Remove it from the tractor and pop it into your oven (not microwave!) and heat to 150 or so. Take the readings again. If they increase dramatically you've found your problem.
I ruled out the solenoid because I get no voltage at the solenoid harness when I turn the ignition key to start. I should be getting about 12v.
 
   / KIOTI no start, electrical #4  

MTGreen

Silver Member
Joined
Oct 12, 2022
Messages
188
Tractor
Deere 5220, Ford 1720, Deere Progator 2030
Does your start circuit have a relay? Relays can be heat sensitive.

If not you need to chase the voltage. Start at the battery, then check for power at the ignition switch in then out, then the various interlock switches in turn both in and out until you come to the solenoid. It's just a big loop battery-ignition switch-interlock switches in series-solenoid-ground through solenoid body-battery ground. There's a heat sensitive break in that loop somewhere and you can methodically check through it by chasing the voltage
 
   / KIOTI no start, electrical #5  

Roadworthy

Elite Member
Joined
Aug 24, 2019
Messages
3,073
Location
Southeast Washington
Tractor
Kubota L2501 HST,
It's time to break out a schematic. You need to determine which components may be warmed as the engine comes up to temperature. You may also wish to put an ammeter in series with some wires to determine if a current is being drawn somewhere when there should be none drawn. What you perceive as a heat related issue may be due to stray currents passing in the circuit when the key is turned on. This one may take some time and a bit of head scratching.
 
   / KIOTI no start, electrical
  • Thread Starter
#6  
OP
S

stancel

New member
Joined
Sep 7, 2016
Messages
15
Location
Slidell, La
Tractor
Yanmar YM2000
It's time to break out a schematic. You need to determine which components may be warmed as the engine comes up to temperature. You may also wish to put an ammeter in series with some wires to determine if a current is being drawn somewhere when there should be none drawn. What you perceive as a heat related issue may be due to stray currents passing in the circuit when the key is turned on. This one may take some time and a bit of head scratching.
Unfortunately I don't have a wiring diagram for this thing.
 
   / KIOTI no start, electrical #7  

Robin Veerman

Platinum Member
Joined
Jan 19, 2018
Messages
555
Location
ONTARIO Canada
Tractor
2014 Kioti CK30HST
I’m thinking that it may be a relay. I’ve had issues and replaced a relay which solved the issue I was having. Try banging or striking the relay to see if there’s any change…see next post
 
   / KIOTI no start, electrical #8  

Robin Veerman

Platinum Member
Joined
Jan 19, 2018
Messages
555
Location
ONTARIO Canada
Tractor
2014 Kioti CK30HST
 
   / KIOTI no start, electrical #9  

MichiganIron

Silver Member, Advertiser
Joined
May 12, 2008
Messages
746
Location
Central Michigan
Tractor
Full line of KIOTI Tractors, BEFCO and Worksaver Implements
I am out of ideas with my CX2510. It will crank when cold, but once warmed up it isn't getting power to the solenoid and doesn't turn over.

I have checked the PTO, Neutral, and Clutch safety switches and all have 12v passing through. Tested starter relay and ignition switch and both are good. Also verified the start fuse and made sure I was getting 12v on both sides. I don't think it is a short or compromised wire insulation because it only happens after it warms up, then no problems after sitting a couple hours.

I can unplug the solenoid and jumper it no problem and it operates as it should.

Anybody have any ideas?
Your tractor has a Safety Start Controller mounted on the side of the transmission below the seat pan. Contact your dealer and replace the Safety Start Controller. The controller reads all of the safety switches, determines glow timing, and sends the start signal to the start relay. If you have already checked the seat switch and the start relay, you probably need to replace the Safety Controller Unit.

Hope this helps
 
   / KIOTI no start, electrical #10  

ruffdog

Super Member
Joined
Dec 31, 2011
Messages
8,357
Location
southern wisconsin
Tractor
Bobcat Toolcat 5610G, Deere X744, Cub Cadet IH 982
Your tractor has a Safety Start Controller mounted on the side of the transmission below the seat pan. Contact your dealer and replace the Safety Start Controller. The controller reads all of the safety switches, determines glow timing, and sends the start signal to the start relay. If you have already checked the seat switch and the start relay, you probably need to replace the Safety Controller Unit.

Hope this helps
Like this? Do they have different ones depending if it has a mower?
 
 
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