New Holland TN70

[Kelley]

I have a TN70 New Holland and it is showing two codes one is 12 and the other is 35 the tractor runs good but will not move. I would like to know if anyone can help? I also would like to know if anyone knows where to hook the computer up?

 

[RickB]

Open station TN's without SuperSteer have the diagnostic connector just in front of the firewall, I don't remember which side. All cabbed and SuperSteer TN's have the diagnostic connector (black) near the clutch pedal and fuse panel under the lower left cowl panel. Fault 12 is Clutch Pedal Potentiometer signal voltage shorted to 5 or 12 volts and indicates faulty wiring, potentiometer, or ECM. There are tests in H9, H5, and HA to troubleshoot. Code 35 is Dump valve solenoid or ECM short circuit to 12 volts and indicates faulty wiring, dump solenoid coil, or ECM. There are no H menu diagnostics for this code, but disconnecting the dump valve solenoid coil wiring connector should change the fault code to 36 if the coil is shorted (which is unlikely since there is no 12 volt source at the coil). Be sure to check the shuttle handle/switch for looseness and shorted connections to the mounting bracket as well as running the switch test routines on the FNR switch before buying that new ECM.

 

[Anonymous-0]

Kind of makes me want to hang onto my 4600 forever after hearing the hair pulling fun? you are having with that princess! best of luck!

 

[RickB]

I work on TN's to support my 3 cylinder 4000.

 

[Anonymous-0]

my tn75 shuttle shift quits after about an hour of running it.I let it set overnite and it will run for another hour or so before it quits again.It jumps into neutral as soon as you put it into forward or reverse.I have changed a pressure switch which did not help anything.I took it to the dealer last fall with the same problem and they charged me $500.00 to resolder a bad connection.You got any ideas? Thanks,Tony