JD 4310 hydro wont move forward

[rlpete]

jd 4310 has code 1 short and 3 long. I cant find a problem with wiring. there was a problem with a 2 wire connector, under tractor that was pulled loose by brush.
wire repaired but tractor wont move forward. backs up fine.

 

[mfreund]

Welcome,

You are on the right track. The code is for the forward coil being out of range due to open or short. Check all the wires under the tractor, pushing the wires back in to the connector and make sure the repaired wires are connected correctly.

There is another forum that has the 4X10 codes in their technical archive that you can down load for free. Google is your friend here. I tried to post a link, but is not allowed.

 

[rlpete]

thanks
there was a blue and black wire disconnected. on the other side of the connector the wires are both black. iam not sure if it makes a difference which way they go.
the book I received with the tractor shows nothing. it doesn't even have a correct picture of the fuse block

 

[mfreund]

In the tracer on the wires there should be printing. What do they say?

 

[rlpete]

lt blue wire 989

 

[mfreund]

Is this at the pedal? LT blue 686 is the middle wire to the forward potentiometer. There should be a a 636 orange on one end. The 686 LT blue in the middle and 550d black for ground. The forward proportional solenoid is LT blue 696 and a 050d black.

 

[rlpete]

Hi; I checked the power to the forward potentiometer and out of it. voltage looks good to the controller but no power out of it going to the forward proportional solenoid. I still have the same code, short and 3 long.
Do you know what could be blocking the power from the controller or possibly the controller is bad.
thanks for your help.

 

[mfreund]

Are you checking 686 LT blue out of controller? Check continuity to ground.

 

[rlpete]

yes on checking lt bl 686
good ground
should there be voltage out of controller to proportional valve, if so how much?
still have code short long long long

 

[mfreund]

Did you get the LT blue 686 fixed? There will not be any output on LT blue 696 without input from LT blue 686. Code will be there until problem is fixed. When the problem is fixed the code will self clear.