Kubota 3600 Glow Plugs

[pmanches]

I am in need of advice regarding my glow plugs. They quit working completely and after changing out the relay with no success I tested the back of the ignition switch. The center post is always hot, one other post energizes when I turn the switch to the on position. There are two other wires coming from the back of the switch that I believe are supposed to send power to the glow plug relay and neither energize at anytime. My question is should they energize and can this be my glow plug problem.

 

[Spanner]

What happens when you turn the switch 'backwards' from "Off" ?

Edit: What are the colour codes of the wires on the switch and the colour codes of the wires on the relay??

 

[pmanches]

The switch does not turn backwards.
Wires are center wire is solid red
outer wires are black with red stripe, red with white stripe, and black with white stripe.

 

[Spanner]

... and the colour codes of the wires on the relay??

:confused3:

 

[pmanches]

Two smaller wires are one black with white and other red with black
Two larger wires, black with white and other solid red.

 

[Spanner]

Two smaller wires are one black with white and other red with black
Two larger wires, black with white and other solid red.

Without a schematic diagram I'm guessing - The two larger wires will carry current from battery and to the Glow-Plug buss bar. So confirm you see one of the colours connected to one end of the GP bar.

It is likely the smaller Black/white wire goes to the ignition switch Bl/W.

You can check for continuity on that wire?

Since you say the switch doesn't go backwards, there may be a Timer module somewhere to control the GP's.

You need a schematic from here.

 

[pmanches]

But there is no power from the switch on either of these wires, that is why I thought the problem likely the switch. I believe there may be a timer involved but without power coming from the back of the switch I think anything downstream from the switch is dead.

 

[pmanches]

I have continuity and the wire to the buss bar is the black with white.

 

[Spanner]

You could be right. A schematic is your best friend and he's buddies with your DMM.

Checked your fuses??

 

[pmanches]

Yes on the fuses. Thanks for trying, I don't feel like such a fool not figuring this out now!!

 

[Spanner]

Some Orange experts will no doubt chime-in. Just mid-morning down here so I'm having a coffee break.
Best of luck.