Husqvarna yth24v48 electrical question

[LawnWizard]

Good day all!
I am currently working on a Husqvarna YTH24V48 with Briggs Intek 724cc 24.0 hp.
Question is about the park brake switch. With brake pedal depressed it starts and runs perfectly. Blades engage with PTO. Issue is that as soon as brake is released, the engine dies. I ruled out seat switch b/c PTO should kill if seat not occupied. I have removed and tested brake switch. It has continuity as I would expect. (One pair with button out, the other pair with button depressed). With brake button in the engine runs perfectly (with and without PTO engaged. I believe the reverse switch would only effect the mower with the PTO on? Ignition switch? Ground issue? Any help greatly appreciated.
Hugh

 

[Rivets]

In my opinion you are making a bad assumption. The seat switch will kill the engine when the seat is not occupied. Read page 15 of this manual. https://www-static-nw.husqvarna.com...OM/C4Q3g-CygYDqqSUkOJJmmls_K_s?httproute=True

 

[LawnWizard]

In my opinion you are making a bad assumption. The seat switch will kill the engine when the seat is not occupied. Read page 15 of this manual. https://www-static-nw.husqvarna.com...OM/C4Q3g-CygYDqqSUkOJJmmls_K_s?httproute=True

I understand. But shouldn't a bad seat switch also kill the engine when the electric PTO is engaged if the seat is empty?

 

[LawnWizard]

I understand. But shouldn't a bad seat switch also kill the engine when the electric PTO is engaged if the seat is empty?

Let me rephrase that. Shouldn't a bad seat switch kill the engine as soon as the PTO is engaged b/c it thinks the seat is empty?

 

[Scrubcadet10]

jump the seat switch connector, if this fixes it, bad seat switch.

 

[Rivets]

Lawn wizard, you are confusing two different circuits. Operator present circuit will shut down the engine, while reverse mow circuit shuts down the PTO. Assuming how they work will get you in trouble, read page 15, then follow Scrubs suggestion.

 

[LawnWizard]

Lawn wizard, you are confusing two different circuits. Operator present circuit will shut down the engine, while reverse mow circuit shuts down the PTO. Assuming how they work will get you in trouble, read page 15, then follow Scrubs suggestion.

Thanks, but you're not understanding what I am saying. I read pg 15. If the operator is not present the seat switch should kill the engine when turning on the PTO. That happens. It also kills the engine when getting out of the seat without the park brake set. The issue is that with the seat occupied (with or without the PTO engaged), the engine dies when the brake pedal is released. Both the seat and park brake switch test good with an ohm meter. That was my original question

Thanks for your help.

 

[Rivets]

Here is a wiring schematic for your unit. If you notice the seat switch has a double contact setup, so simple testing with an Ohm meter will mean that you need to jump one side of the switch before getting accurate readings. https://www.messicks.com/catalogs/husqvarna/yth24v48-96043018200-2013-10/figure-listing/schematic

 

[LawnWizard]

Here is a wiring schematic for your unit. If you notice the seat switch has a double contact setup, so simple testing with an Ohm meter will mean that you need to jump one side of the switch before getting accurate readings. https://www.messicks.com/catalogs/husqvarna/yth24v48-96043018200-2013-10/figure-listing/schematic

Thank you.

 

[LawnWizard]

I looked at the wiring schematic about a hundred times trying to see what else was in that series. I just could not see that that switch is effectively a double switch. Everyone I every replaced either worked or didn't. First time I've had one work for the PTO but not for releasing the brake (at least that I know of). Usually I test the mower ride ability before even trying the PTO. New switch on order. Thanks again for your patients and help.