West Central Iowa | pirlbeck - 3/24/2021 20:36
I had one that did that a couple of years ago and it did not have a fuse in the DIA location, but you do need to check for that first. The d1A is telling you it is in diagnostic mode, which is normally accessed by putting a fuse in the diagnostic location on the fuse panel. Anyway, JD has a DTAC solution (service bulletin) for this problem, which involves putting a ground wire on one of the diagnostic fuse terminals. I can get you the solution number when I get to the shop in the morning and your dealer should be able to print you a copy of it.
I thought I would add this just in case someone runs into this problem WITHOUT having a fuse in the DIA location.
The DTAC solution # is 71449 dated 12-22-2010.
Solution Summary: 00/10/20 W/T tractor goes into diagnostic mode on its own.
Complaint or Symptom: Tractor goes into Diagnostic mode while operating in the field. Corner post display stops showing engine RPM and displays DIA while engine is running. Tractor can be shut off and restarted to return to normal operation. Circuit 312 acquires enough voltage from other circuits to place controller into diagnostic mode without a fuse in diagnostic mode position F10.
Solution: Insert a male spade terminal into diagnostic fuse F10 for circuit 312 (non-powered side). Connect the other end of this wire to a ground terminal in the power strip. This prevents circuit 312 from causing controllers to go into diagnostic mode without a fuse installed in position F10.
CAUTION: Make certain to use a voltmeter to identify which side of fuse holder F10 does not have 12 volts applied to it. Non-powered side of fuse F10 is connected to circuit 312.
I had a 8410 a couple of years ago with this problem and a ground wire cured it.
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Disabled transmission on jd 8310
