Aux/Hitch/Pto Fault Code 30 - New Holland T8010 Manual

Right Draft Pin Voltage is Outside The Normal Operating Range
Cause:
During calibration, the 'No Load' offset voltage is out of range for right draft pin.
The draft control requires that the 'No load' voltage is 3.00 +/- 0.05 volts to ensure the draft quality.
The hitch controller will check it during calibration.
Possible failure modes:
1. Right draft pin failed.
2. Wiring problem from the hitch controller to the right hand draft pin.
Solution:
The 'No Load' offset point can be permanently shifted if the draft pin is installed backwards and overloaded. The
pin signal can be checked by using a Y harness or using the monitoring screen of the service tool.
If the signal exists but just slightly beyond the range (say in the range 2.3 - 3.7 volts), the wiring is OK, but pin failed.
If there is no signal or signal is far beyond the range, it can either be pin failure or wiring problems.
1. Use a Y harness:
Plug in the Y harness at the pin connector(C153). cavity A is the ground, cavity B is the draft pin signal, and
cavity C is the power supply (+8 VDC).
a) Check the power supply at cavity C. If the +8 VDC is not present check the wiring from C153 to Pin 1 of
C059.
b) Check the function of the right draft pin.
Replace the pin in any of the following cases:
No signal output.
Signal not within 2.95 to 3.05 when there is no load.
The output does not change with the load change.
2. Use the service tool:
Go to the Monitor screen by click the Monitor Icon.
Click the CHANGE PARAMETER SELECTIONS Icon.
Click the HITCH DRAFT PIN-RIGHT-VOLTAGE and then ADD. You will be able to monitor the right draft pin
signal status on the screen.
The voltage should be 2.95 to 3.05 when there is no load.
The voltage should change with the load change in the range of 2.3 to 5.3 VDC at -60 KN to 160 KN.
3. Check the function of the draft pin.
a) If a spare draft pin is available, unplug the right pin connector. Plug in the new pin, clear the fault codes, start
the tractor, and enable hitch. Lower and raise the hitch a few times.
If the fault code is not recorded, the draft pin failed.
If the fault code is recorded again, check the wiring.
b) If there is neither fault code hitch 4029 nor hitch 4039, that means the left draft pin is working. Use the left
pin as the test pin and repeat the above test.
4. Check the wiring from the hitch controller to the right hand draft pin.
a) Disconnect the pin connector. At the controller side, check the power supply across cavity C and A. It should
be 8 volts.
b) Check the continuity from C153 to C059.
c) At the draft pin side, measure the continuity of the pin circuit. The resistance should be 180 kohm across A
and C and 18 kohm across B and C.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
NOTE: The resistances at the draft pin side are for reference only. Incorrect resistance means bad pin but some
bad pins may have correct resistances.
NOTE: See schematic sections 51 and 52 on the schematic poster.
Section 55 - Electrical System, Controller - Chapter 3

AUX/HITCH/PTO FAULT CODE 30

55-3-25