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Dan
Dan, Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 4984
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.
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I have a Deere 4210 tractor that the transmission has ceased

Customer Question

I have a John Deere 4210 tractor that the transmission has ceased to operate in the forward or reverse positions. (hydro trans.) I think that a fuse was placed in the f12 fuse block position which disables the trans. How do I enable it again.
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Dan replied 1 year ago.

Hi my name is***** will try to help. If this is in fact electrical that happened immediately after then try disconnecting the batteries to reset the system. I would also check the strainer/filter for metal/debris indicating a potential internal problem occuring. Let me know and I will be glad to help further if needed.

Customer: replied 1 year ago.
I disconnected and reconnected the battery. This did not work. The problem started when I was replacing a tail light assembly . A fuse was blow and my "helper" replaced it but inadvertently placed a fuse in F12. On the fuse cover it states that the transmission could be disabled if this happened. I need to enable it again and the battery disconnect was not the answer. Do you have another answer.
Expert:  Dan replied 1 year ago.

Thanks for the update. Did the no forward and reverse exist before he moved the fuse? If so there still could be another failure in the circuit that will need to be addressed before performing any calibrations. You will need to try to pull your fault codes to see if it will still display them now and also run through the calibration procedure and hope it will complete without any faults. this is the next step.

During Normal operation:
FAULT CAUSE
Voltage signal is out of
range.
Input is not calibrated.

MACHINE RESPONSE
Load Match is disabled;
loss of performance.
RESET ACTION
Power recycled through off
to clear error status.
Sensor has to be recalibrated.

During Calibration Routine:
FAULT CAUSE
Voltage signal is out of
range.
MACHINE RESPONSE
Calibration routine
stops.

RESET ACTION
Power recycled through off
to clear error status.
Calibration repeated after
signal is back within range.

eHydro - Throttle Position Potentiometer Test

Reason:To verify the throttle position potentiometer for proper
voltage with the throttle in the low and high idle positions.

Equipment
• JDG1575 Test Kit

Procedure:
1. Park machine safely in neutral with park brake locked.
2. Remove the right side cowl panel.
3. Inspect the linkage between throttle lever and
potentiometer for wear, damage or looseness. Repair or
replace as needed.
MX17140
4. Connect the red lead to the volt, ohms, Hz input jack (A)
of the multimeter and the voltage A terminal (B) of the
breakout box.
5. Connect the black lead to the com input jack (C) of the
multimeter and the voltage C terminal (D) of the breakout
box.
6. Connect the 3 pin extender harness (E) into the 3 pin
connector (F) of the breakout box.
7. Set the multimeter to the DCV position (G).
8. Set breakout box switch to off position (H).
MX9835
9. Connect the position sensor Y connector (I) between the
throttle position potentiometer (J), the machine wiring
harness (K), and the extender harness (L).
10.Turn the key switch to the run position.
11.The input voltage should be within specification. If not,
See “Power Circuit Operation” on page 158.
MX17141
12.Move the red lead on the breakout box from the A
terminal to the B terminal (M).
13.Set throttle to low idle position.
14.The low idle voltage should be within specification. If
not, adjust potentiometer.
15.Set throttle to high idle position.
16.The high idle voltage should be within specification. If
the voltage is within specification, calibrate the throttle
position potentiometer. If not, replace and adjust the throttle
position potentiometer.
17.Turn the key switch to the off position.
18.Unplug the position Y connector from the machine
wiring harness and the throttle potentiometer.
19.Connect the machine wiring harness to the throttle
potentiometer.
20.Install the right side cowl panel.
Specification:
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . 5.0 ± 0.2 volts
Low Idle Position Signal Voltage. . . . . . . . 0.4 - 1.0 volts
High Idle Position Signal Voltage . . . . . . . 3.2 - 4.5 volts

eHydro - Throttle Position Potentiometer Adjustment and Calibration

Reason:To adjust the throttle position potentiometer for the proper
voltage with the throttle lever in the low and high idle
positions.

Equipment:
• JDG1575 Test Kit

Adjustment Procedure:
1. Park machine safely in neutral with park brake locked.
2. Remove the right side cowl panel.
3. Inspect the linkage between throttle lever and
potentiometer for wear, damage or looseness. Repair or
replace as needed.
4. Connect the red lead to the volt, ohms, Hz input jack (A)
of the multimeter and the voltage B terminal (B) of the
breakout box.
5. Connect the black lead to the com input jack (C) of the
multimeter and the voltage C terminal (D) of the breakout
box.
6. Connect the 3 pin extender harness (E) into the 3 pin
connector (F) of the breakout box.
7. Set the multimeter to the DCV position (G).
8. Set breakout box switch to the off position (H).
9. Connect the position sensor Y connector (I) between the
throttle position potentiometer (J), the machine wiring
harness (K), and the extender harness (L).
10.Turn the key switch to the run position.
11.Loosen the lock nuts (M) enough that the potentiometer
will stay in place without turning, but can be rotated by
hand.
12.Set the throttle to the low idle position.
13.Rotate the potentiometer until the meter reading is
within specification.
14.With the calibration kit still attached, tighten the two nuts
to specification, being sure that the voltage reading does
not change.
15.Set the throttle to the high idle position.
16.The high idle voltage should be within specification. If
the voltage is within specification, calibrate the throttle
position potentiometer. If not, replace and adjust the throttle
position potentiometer.
Specification:
Low Idle Position Signal Voltage. . . . . . . . 0.8 ± 0.1 volts
High Idle Position Signal Voltage . . . . . . . 3.8 - 4.5 volts
Lock Nut Torque . . . . . . . . . . . . . . . 3.4 N•m (30.0 lb-in.)
Calibration Procedure:
1. Turn key switch to the off position.
2. Unplug the position Y connector from the machine
wiring harness and the throttle potentiometer.
3. Connect the machine wiring harness to the throttle
potentiometer.
4. Set the throttle lever to the low idle position.
5. Turn the key switch to the run position.
MX10694
6. The fault light (N) should display the 3 short and 1 long
flash (• • • -) fault code.
7. Wait 5 seconds then move the throttle lever to the high
idle position.
8. After 5 seconds the fault light should turn off.
9. When the flash code ends the throttle position
potentiometer is calibrated.
10.Install the right side cowl panel.

Expert:  Dan replied 1 year ago.

Hi, Did you get this resolved?

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