GF1800 suddenly quit. no power to anything

[Seans68]

I have a GF1800 that was running fine and suddenly shut down. No power to dash when key is turned. Battery is good, cleaned all terminals, grounds, key switch getting power in and out, will crank by jumping at starter, fusable link is good, checked 3 fuses in box and they're good. Suspected the box controller but it's been replaced with a new one and still nothing. About to set fire to it as I think I have checked every connection and cannot find anything wrong. I'm wondering if bad box controller was installed. Have had new parts that were bad from the get go. Any suggestions would be appreciated. It's a Kubota diesel

 

[85Hokie]

I have a GF1800 that was running fine and suddenly shut down. No power to dash when key is turned. Battery is good, cleaned all terminals, grounds, key switch getting power in and out, will crank by jumping at starter, fusable link is good, checked 3 fuses in box and they're good. Suspected the box controller but it's been replaced with a new one and still nothing. About to set fire to it as I think I have checked every connection and cannot find anything wrong. I'm wondering if bad box controller was installed. Have had new parts that were bad from the get go. Any suggestions would be appreciated. It's a Kubota diesel

Is there a clutch safety switch? Is there OP switch? Is there any switch that would interrupt the start?
When you check fusable link, did you to a continuity on it? or????

When you checked the grounds..... did you look DOWN in the connector to see if it was oxidized? I have seen a many of connection ends that were pretty on the outside, but look down where the copper meets the connector, it was bad.

FOR it to quit...... that means that fuel had to be cut off somehow...... so you turn the key off and this kills the fuel solenoid? Not sure at all about your model, zero turn yes? But something is cutting that flow off for it to kill the engine while running.
Could for whatever reason your ignition switch somehow be bad?

 

[Russell King]

I would suggest you get an in line fuse and attach one end to battery positive. Extend the other end to where you need a power supply. For examples the fuse box or the key switch. Bypassing the wiring to see if you can get anything to light up.

Use a fairly small fuse rating in case you have a short in the wiring.

See if that can isolate where power is not passing.

 

[Seans68]

Is there a clutch safety switch? Is there OP switch? Is there any switch that would interrupt the start?
When you check fusable link, did you to a continuity on it? or????

When you checked the grounds..... did you look DOWN in the connector to see if it was oxidized? I have seen a many of connection ends that were pretty on the outside, but look down where the copper meets the connector, it was bad.

FOR it to quit...... that means that fuel had to be cut off somehow...... so you turn the key off and this kills the fuel solenoid? Not sure at all about your model, zero turn yes? But something is cutting that flow off for it to kill the engine while running.
Could for whatever reason your ignition switch somehow be bad?

The clutch safety, seat safety, blade safety are all made. Yes, just like the key was turned off and it turned off the fuel solenoid and everything else. I have metered the key switch and used test light on it and it's getting power in and out and feeding fuse block and power to the box combination. I got a wiring diagram now so I know what is to be getting power from the ign switch so I'll have to keep digging. I know the box combination feeds the fuel shut off and other things so I'll have to see if it has power coming out on correct wires. No way to test them, correct?

 

[Seans68]

I would suggest you get an in line fuse and attach one end to battery positive. Extend the other end to where you need a power supply. For examples the fuse box or the key switch. Bypassing the wiring to see if you can get anything to light up.

Use a fairly small fuse rating in case you have a short in the wiring.

See if that can isolate where power is not passing.

I will certainly try this too.