Aux/Hitch/Pto Fault Code 35 - New Holland T8010 Manual

Percent Slip Error
Cause:
The percent wheel slip is determined by the difference between the wheel speed and the ground speed. The AUX/
Hitch/PTO controller receives the information from the instrumentation controller through the Data Bus.
Possible failure modes:
1. Wheel slip sensing (radar gun, wheel speed sensor) failed (in most cases).
2. Percent slip calculation failed in instrumentation controller (small chance).
Solution:
The wheel speed sensor and the radar gun (for the ground speed) are hard wired to instrumentation controller. If
the problem is with the wheel speed sender, then the AUX/Hitch/PTO fault code 32 and 87 should appear.
If there is no AUX/Hitch/PTO fault code 32 and 87, the problem is more likely with the radar gun. There is also a
small chance of instrumentation controller malfunction.
1. Check the wiring of radar gun.
Disconnect connector C068 at the radar.
The power supply at pin C of connector C068 should be 12 Volts when the tractor key is in the 'RUN' position.
There should be good continuity from pin A of connector C068 to the clean ground.
Check for open circuit and wiring shortage.
NOTE: Always inspect connector ends for damage, bent or dislocated pins when troubleshooting.
2. Check the function of the radar.
The signal is from Pin B of the Radar and connected to the pin 13 of the instrument cluster connector CN-1
through Pin 25 of connector C060. The radar will detect the speed of any thing moving in front of it. So a quick
hand moving in front of the radar will be an easy way to test the frequency change of the radar signal. Special
tools (such as oscilloscope) is needed to check the frequency.
If the radar does not work as expected, replace the radar in the following procedures:
a. Disconnect the radar wiring.
b. Remove the radar from the vehicle.
c. Install the new radar.
d. Reconnect the wiring and check the function of the new radar.
3. If there is not problem with the radar and its wiring, check the function of the instrumentation controller and the
hitch controller.
NOTE: See schematic sections 24, 25 and 26 on the schematic poster.
Section 55 - Electrical System, Controller - Chapter 3

AUX/HITCH/PTO FAULT CODE 35

55-3-30