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Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3403
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Trying to figure out why my Motorguide Great 82# 24volt

Customer Question

Trying to figure out why my Motorguide Great White 82# ***** trolling motor just stopped working today.
JA: Thanks. Can you give me any more details about your issue?
Customer: I have good power to the front of the boat. But, the digital foot control doesn't seem to be getting power or isn't controlling the unit. I can't put it into stow or constant on. And the digital steering isn't working either now. It was working for about an hour this morning I ran it aground and it ran a little longer then went intermittent and finally nothing.
JA: OK got it. Last thing — Marine Mechanics generally expect a deposit of about $26 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.

Hello, this is Charles. Thank you for requesting me today.

What year is your trolling motor?

Customer: replied 1 year ago.
2006
Customer: replied 1 year ago.
Hello, Charles are you still there?
Expert:  Charles replied 1 year ago.

Thanks,

How are you testing the power to the bow of the boat?

Are you near the motor now?

Customer: replied 1 year ago.
No it is outside.
Expert:  Charles replied 1 year ago.

Do you have a multimeter?

Customer: replied 1 year ago.
Expert:  Charles replied 1 year ago.

Ok can you remove the plug connector on the boat, then use the meter to make sure that you are getting at least 24V to the bow.

Customer: replied 1 year ago.
Can you call me? I don't have the pin put for the plug and don't want to cross connect wires!
Customer: replied 1 year ago.
Hold on. I understand. I will check the trolling motor plug for 24 volts and get back to you.
Expert:  Charles replied 1 year ago.

I tried to accept your phone call offer. It would not go through.

Customer: replied 1 year ago.
Thanks. Have you ever heard of the Troll Bridge?
Expert:  Charles replied 1 year ago.

On your motor?

Customer: replied 1 year ago.
It goes between the batteries to make either 24 volts or 12 volts in series.
Expert:  Charles replied 1 year ago.

Ok, like a 12/24V switch.

Customer: replied 1 year ago.
I have 24.61 v to the bow.
Expert:  Charles replied 1 year ago.

Great. Now you will need to remove the plate from the bottom of the foot control. Then test for power on the large red and black wires there. This is with the motor plugged into the boat.

Customer: replied 1 year ago.
I have you in chat on my phone
Expert:  Charles replied 1 year ago.

I dont understand

Customer: replied 1 year ago.
I'm out by the boat
Expert:  Charles replied 1 year ago.

ok great. Can you test the foot pedal voltage?

Customer: replied 1 year ago.
I have good voltage to the motor. What next?
Customer: replied 1 year ago.
Which pin locations?
Expert:  Charles replied 1 year ago.

On the bottom of the foot pedal?

The black is on a junction block, the red goes to the control board.

Customer: replied 1 year ago.
Mine has a six pin connection nothing on the bottom
Customer: replied 1 year ago.
Are you talking inside the foot pedal?
Expert:  Charles replied 1 year ago.

Yes in the foot pedal, you will need to remove the metal plate from the bottom of it.

Customer: replied 1 year ago.
Mine is all plastic
Expert:  Charles replied 1 year ago.

Can you remove it? The diagram shows it will simply unscrew. With 4 screws

Customer: replied 1 year ago.
I just removed 6 screws to open the unit.
Expert:  Charles replied 1 year ago.

8 screws actually

Customer: replied 1 year ago.
Customer: replied 1 year ago.
Color of wires : yellow, orange blue, green, gray, and white.
Customer: replied 1 year ago.
No, you should find it under gb82.
Customer: replied 1 year ago.
Model GW82EX
Customer: replied 1 year ago.
foot pedal assembly (M0099101)
Customer: replied 1 year ago.
Hello
Expert:  Charles replied 1 year ago.

I have it open here.

With the loss of steering and speed, this failure your either be in the foot, or the main control board on the motor/

Customer: replied 1 year ago.
where does that leave me?
Customer: replied 1 year ago.
I guess I have to go see a MG service center?
Expert:  Charles replied 1 year ago.

Unfortunate it does need to go in. The issue being that the parts are very costly for this motor and a bunch of them are NLA. If your est. is too much, you make with to look at the Xi5. It is a much better motor than the Great White.

Customer: replied 1 year ago.
Thanks, but if I have to get a new one it will be the I pilot thru Minnesota Kota
Expert:  Charles replied 1 year ago.

Very Good choose as well.

Customer: replied 1 year ago.
Have a good day.
Expert:  Charles replied 1 year ago.

You too Sir. Wish I could have helped more.

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