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JD 650k xlt exhaust throttle codes

M

Midnightmoon

Senior Member
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Nov 9, 2013
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445
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Ny
This started with 3673.7 exhaust throttle not responding code came on the went off machine a little under power. now with key on code 3673.31 exhaust throttle invalid position. My question not working on JD that much is should I just free up the assumed stuck throttle valve and send it on its way or should I also replace the actuator too? Will I have more problems down the road if I dont replace actuator.

Thank you
 
T

TNB

Active Member
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Jul 23, 2016
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Over there
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P-on
Midnightmoon said:
This started with 3673.7 exhaust throttle not responding code came on the went off machine a little under power. now with key on code 3673.31 exhaust throttle invalid position. My question not working on JD that much is should I just free up the assumed stuck throttle valve and send it on its way or should I also replace the actuator too? Will I have more problems down the road if I dont replace actuator.

Thank you
Click to expand...
First you should verify that something is actually stuck..if it is, it is most likely the throttle itself which should be replaced..if not the next step would be verifying switched voltage and ground, as well as CAN Hi and Lo voltage at actuator connector while fault is active..imagining this machine does not take DEF?
 
M

Midnightmoon

Senior Member
Joined
Nov 9, 2013
Messages
445
Location
Ny
Actuator is making noise so I thought throttle was stuck. On closer review it moves freely. Key on actuator moves up then makes noise and leaves 3465.7 code exhaust throttle learn error. 24volt and ground are good and can wires have 2.5volts. this was tested at the back side of plug going to actuator so I know Im good through the plug. Last 7 of serial is E 256612. Im also getting a 2634.05 code once and a while on this machine. I was thinking it was from being left on without starting. A jd code info would be great. Im at a slight disadvantage because our local dealer is not so good. Last time this machine had a ccv code they said we needed a new engine and walked away. All it was, was dirt packed in ccv tube that exits into the air. Time before that we were told it needed a harness and it was a clogged fuel line fitting, the 90 going to the fuel filter housing. This machine has had gremlins for a while to say the least. In any case I sure could use a jd diagnostic computer. I have all the computer diagnostics for kubota, yanmar, perkins, and deutz wish I could get my hands on a few others but thats another matter. So is the actuator down for the count or do I really have a wiring issue? No DEF on this machine.
Thanks again
 
T

TNB

Active Member
Joined
Jul 23, 2016
Messages
38
Location
Over there
Occupation
P-on
Midnightmoon said:
Actuator is making noise so I thought throttle was stuck. On closer review it moves freely. Key on actuator moves up then makes noise and leaves 3465.7 code exhaust throttle learn error. 24volt and ground are good and can wires have 2.5volts. this was tested at the back side of plug going to actuator so I know Im good through the plug. Last 7 of serial is E 256612. Im also getting a 2634.05 code once and a while on this machine. I was thinking it was from being left on without starting. A jd code info would be great. Im at a slight disadvantage because our local dealer is not so good. Last time this machine had a ccv code they said we needed a new engine and walked away. All it was, was dirt packed in ccv tube that exits into the air. Time before that we were told it needed a harness and it was a clogged fuel line fitting, the 90 going to the fuel filter housing. This machine has had gremlins for a while to say the least. In any case I sure could use a jd diagnostic computer. I have all the computer diagnostics for kubota, yanmar, perkins, and deutz wish I could get my hands on a few others but thats another matter. So is the actuator down for the count or do I really have a wiring issue? No DEF on this machine.
Thanks again
Click to expand...
It is not uncommon for the actuators to fail in this fashion..if it’s consistent and your voltages/grounds are consistently present then it would be safe to assume that the actuator has failed electronically..or there is a software issue..either way to diagnose any further you would need diag software to monitor the actuator position when the fault is present or dealer level software to update ecu software.
 
mg2361

mg2361

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Pennsylvania
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Equipment Mechanic
Midnightmoon said:
will the new actuator need to be calibrated?
Click to expand...

Yes.

According to your serial number you have the latest ECU software which is good because there have been many updates to the exhaust throttle code setting parameters.

Those throttles will intermittently stick setting those codes and the only fix has been replacement, providing you are not dropping voltage anywhere or losing "CAN".
 
M

Midnightmoon

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Nov 9, 2013
Messages
445
Location
Ny
i pulled it apart and there is a tooth missing from the black gear causing it to slip.
Thanks for the help. Are there any sources of detailed code info i can download?
 
M

Midnightmoon

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Just replaced actuator. There are no codes without calibration. Can I assume without calibration the machine wont preform properly?
 
mg2361

mg2361

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Exhaust Throttle Actuator Learn Value Reset (calibration) resets the original stored values for the open and closed actuator positions. The reason for it is so the ECU can compare the stored values to the actual values so it knows when an issue arises. If the original stored values are close enough to the value the ECU sees at key on (that is why you see the throttle cycle every time the key is turned on - self test) then theoretically there will be no codes and you could run it without seeing codes for a long time. So run it. If any codes pop up then maybe have the Learn Value reset done.
 
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Richard V

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Sep 4, 2022
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Location
Quebec
Hello, I have a generator from Mulitiquip with a JD 4045 engine with 4,500 hours. This winter on a 14 hours power outage, it ran with very little load on I got 1569.006 derate condition exist. Now after 5-10 mins of running I get the same message. In the DM1 menu I have 3673 007 006 unknown spn fmi code. I got the 4045 fault codes pdf and that says Exhaust Throttle Actuator Desired and Actual Position Mismatch. The actuator moves freely. Any one suggests what should be my next step ?
 
mg2361

mg2361

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Location
Pennsylvania
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Equipment Mechanic
You should start your own post in the Generators/Gensets section under Other/Related Equipment. That way it will receive the proper exposure that it needs.

Will need a complete engine serial number for accessing the correct information when you do open that post.
 
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