RXV Curtis Controller won't move

[mgray70]

Originally Posted by usgicollector

I might say that most of the bad RXV controllers I get I still can get into the logic on the controller. They might not put out 5v, or give out any negative to solenoid but like I said most of the time I can get into the logic part of the controller. Now saying that, that controller might be shot.

I got ya! It powers up and does the test, but I can't tell if it's failed and shutting down, or if it's something else like a bad throttle signal or switch.

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[usgicollector]

Yes, normally I can see the faults with the programming station, but the controller is bad. You're unable to connect with the controller and your diagnostic plug isn't in the best of shape. I know you said that the plug and wiring is good but myself I would need to prove that to myself before I would scrap that controller.

[mgray70]

Originally Posted by usgicollector

Yes, normally I can see the faults with the programming station, but the controller is bad. You're unable to connect with the controller and your diagnostic plug isn't in the best of shape. I know you said that the plug and wiring is good but myself I would need to prove that to myself before I would scrap that controller.

Yes, that my plan. I plan to connect everything and see if I have good continuity on each wire on both sides of the plug. I think At least one pin is possible bad. I go on vacation Saturday for next week and was just hoping to at least figure it out before I leave, so I could have the parts on the way so the owner won't have to wait another week for parts after I get back. Golf Carts have been a side business for me since 2016, but looking at retiring this fall and doing it full time. This is only the 2nd RXV I've worked on other than just battery swaps!
Thanks for the help!

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[cartdoc1969]

You can troubleshoot it without a handheld but it's more time and work. Basically you eliminate everything by taking voltage readings at the controller plug. I have to do that with the Danaher controllers. You will need a set of piercing probes for a meter. We can check all the inputs and outputs and go from there. Correct me if I'm wrong, the issue with the cart is the brake not releasing ?

The first thing to check is the 5 volt output (pin 15, orange wire). I believe the ground for that is pin 18. I'll double check when I get to the shop.

[mgray70]

Originally Posted by usgicollector

Yes, normally I can see the faults with the programming station, but the controller is bad. You're unable to connect with the controller and your diagnostic plug isn't in the best of shape. I know you said that the plug and wiring is good but myself I would need to prove that to myself before I would scrap that controller.

Ok, so finally got the computer to connect. Apparently my twist lock mechanism on the adapter wasn't letting the pins go deep enough into the female pins. I cut the twist lock off and it connected. Showing no active faults, but a list in the history. The top error should be the latest one correct? Bad solenoid? Gonna clear them and start up again to see what happens, but have to do a quick errand and I'll be right back to. Glad to figure the connection issue out at least!

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[mgray70]

Originally Posted by cartdoc1969

You can troubleshoot it without a handheld but it's more time and work. Basically you eliminate everything by taking voltage readings at the controller plug. I have to do that with the Danaher controllers. You will need a set of piercing probes for a meter. We can check all the inputs and outputs and go from there. Correct me if I'm wrong, the issue with the cart is the brake not releasing ?



The first thing to check is the 5 volt output (pin 15, orange wire). I believe the ground for that is pin 18. I'll double check when I get to the shop.

I did finally connect the computer. Cleared the codes. Switch on the cart again. Solenoid clicks and does the brake test. No go, no codes. Solenoid coil voltage at start up went to 36v during click like I expected and then settled at 28v. Is that normal?

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[mgray70]

Hallelujah! Changed the solenoid and she runs! All this over a solenoid! Glad I didn't but another controller! Thanks guys!

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[cartdoc1969]

Glad you got it fixed. Thanks for the update

[usgicollector]

Great job it always feels good to get them going again...

Thanks for the update...