Motor no reverse

Papas 73Dart · 08-28-2021, 10:36 AM

I have a 2007 Precedent that had been in a flood. So I jacked up the cart and disconnected the wire to test the motor function . First off I did an ohmmeter test to be sure there were no dead shorts or open circuits. When that displayed no problems I ran a jumper from A1 to F1 then I took my booster cables from a good 12 volt source and connected the leads to A2 and F2. So far all was good motor started rotating in forward direction and no great arcs and sparks when i made the connections. However when I reversed the power connections the motor still went in forward it would NOT go into reverse no matter how many times i tried the connections. WHAT am i missing?? Also the resistor on the solenoid got so hot it burned the plastic sleeves and the wire broke.

WalterM6 · 08-28-2021, 10:57 AM

By shorting A1 to F1 you just destroyed the controller. Out of curiousity where did you ever get that idea to check the motor?

Papas 73Dart · 08-28-2021, 04:34 PM

If you had read my post fully you would see that I disconnected the wiring from the controller and ISOLATED the motor . At no time was there a connection between the controller and the motor whilei was testing

Fairtax4me · 08-28-2021, 05:03 PM

To power test a Sepex motor you have to jumper both A1-F1 and A2-F2. To reverse direction, switch the jumpers from A1-F2 and A2-F1. Positive supply should go on A1 and negative on A2. Typically rotation direction doesn't matter, as long as the motor spins it's usually fine.

Good chance the controller was bad from the flooding. Good idea to remove the motor and see if there is moisture inside. If there is it could lead to major issues later on, even if the motor works right now.
Check the motor for continuity A1 to A2, and F1 to F2 should have continuity.
Any A post to any F post should have NO continuity.
Any A or F post to the motor case should have NO continuity. If that checks out pop another controller in it. I would also recommend replacing the main wire harness in the cart because water damage in the wiring will cause you all sorts of headaches.

Papas 73Dart · 08-28-2021, 08:55 PM

That certain makes sense . The harness definitely has issues. The cart was from a flood over a year ago.

08-28-2021, 10:36 AM	#1
Papas 73Dart Getting Wild Join Date: Oct 2016 Location: Gleniffer Lake Resort ALBERTA Canada Posts: 119	Motor no reverse I have a 2007 Precedent that had been in a flood. So I jacked up the cart and disconnected the wire to test the motor function . First off I did an ohmmeter test to be sure there were no dead shorts or open circuits. When that displayed no problems I ran a jumper from A1 to F1 then I took my booster cables from a good 12 volt source and connected the leads to A2 and F2. So far all was good motor started rotating in forward direction and no great arcs and sparks when i made the connections. However when I reversed the power connections the motor still went in forward it would NOT go into reverse no matter how many times i tried the connections. WHAT am i missing?? Also the resistor on the solenoid got so hot it burned the plastic sleeves and the wire broke.

08-28-2021, 10:57 AM	#2
WalterM6 Gone Wild Join Date: Apr 2017 Location: SE TN Posts: 2,226	Re: Motor no reverse By shorting A1 to F1 you just destroyed the controller. Out of curiousity where did you ever get that idea to check the motor?

08-28-2021, 04:34 PM	#3
Papas 73Dart Getting Wild Join Date: Oct 2016 Location: Gleniffer Lake Resort ALBERTA Canada Posts: 119	Re: Motor no reverse If you had read my post fully you would see that I disconnected the wiring from the controller and ISOLATED the motor . At no time was there a connection between the controller and the motor whilei was testing

08-28-2021, 05:03 PM	#4
Fairtax4me Bonafide Nincompoop Join Date: Dec 2015 Location: Charlottesburg Va Posts: 8,987	Re: Motor no reverse To power test a Sepex motor you have to jumper both A1-F1 and A2-F2. To reverse direction, switch the jumpers from A1-F2 and A2-F1. Positive supply should go on A1 and negative on A2. Typically rotation direction doesn't matter, as long as the motor spins it's usually fine. Good chance the controller was bad from the flooding. Good idea to remove the motor and see if there is moisture inside. If there is it could lead to major issues later on, even if the motor works right now. Check the motor for continuity A1 to A2, and F1 to F2 should have continuity. Any A post to any F post should have NO continuity. Any A or F post to the motor case should have NO continuity. If that checks out pop another controller in it. I would also recommend replacing the main wire harness in the cart because water damage in the wiring will cause you all sorts of headaches.

08-28-2021, 08:55 PM	#5
Papas 73Dart Getting Wild Join Date: Oct 2016 Location: Gleniffer Lake Resort ALBERTA Canada Posts: 119	Re: Motor no reverse That certain makes sense . The harness definitely has issues. The cart was from a flood over a year ago.

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