my tc45 won't start

[Jeff krone]

My tc 45 isn't getting any power to the fuel shut off switch, if I unscrew it from the injector pump the tractor starts right up, I get no warning lights on the dash and the fuse for the safety switch is fine

 

[dynasim]

Attached is a recent thread on a possible cause of your problem.

http://www.tractorbynet.com/forums/new-holland-owning-operating/137391-tc-40-glow-plug-problem.html

In summary, it could be the seat safety switch, or the solenoid itself. Try powering up the solenoid independently, directly from the battery, or jumper the seat safety switch to find out.

Good luck
Chris

 

[jinman]

I posted two schematics in the thread Chris linked. The second one is the one you'll need to troubleshoot your problem. There are four things to check:

1. Seat Safety Switch
2. Operator Safety Module
3. Fuel Shutoff Relay (K5)
4. Fuel Shutoff Solenoid

First, as Chris suggested, try to power the solenoid with a jumper to see that it does work. Then, start looking at the seat switch. If those things don't show as bad, you'll need to take the cowling off under the steering wheel and troubleshoot the relay assembly under the left-side cowling. Your thread title says, "tc45." If you have the gear model, there is a different layout of relays. Let me know which model you have and I'll try to provide you a relay diagram so you can check relay K5 and the Safety Module.