New Holland T8010 Manual page 1520

PTO Software Fault Condition Detected
Cause:
The AUX/Hitch/PTO controller has flagged a PTO software fault condition.
Solution:
Calibrate the AUX/Hitch/PTO controller again. If the same fault code is logged after calibration, change the
controller. Calibrate the AUX/Hitch/PTO controller again.
PTO Solenoid Circuit Shorted To B+ When PTO Is In Off State
Cause:
The AUX/Hitch/PTO controller has detected B+ power at PTO solenoid, when PTO is in OFF state.
Possible failure mode:
1. The PTO clutch solenoid coil shorted to power.
2. PTO clutch solenoid wiring shorted to power.
Solution:
Disconnect the PTO valve solenoid connector C159. Ignition key in On position.
1. Check the wiring harness end pin 1 to ground. There should be no voltage at this location with the PTO switch
in OFF position
2. Check the wiring harness end pin 2 to ground. There should be no voltage at this location with the PTO switch
in OFF position.
3. If B+ power is recorded at either pin inspect the harness back to AUX/Hitch/PTO controller for source of short
to power. If no short is located continue with next step.
NOTE: Always inspect connector ends for damage, bent or dislocated pins when troubleshooting.
Disconnect the connector C053 and C058 at the AUX/Hitch/PTO controller.
4. Check the AUX/Hitch/PTO controller connector C053 pin 13 to ground. There should be no B+ power at this
location with the PTO switch in OFF position
5. Check the AUX/Hitch/PTO controller connector C058 pin 7 to ground.
There should be no B+ power at this location with the PTO switch in OFF position.
6. If 12 volts is traced to the controller connectors C053 pin 13 or C058 pin 7 when the PTO switch is OFF, replace
the AUX/Hitch/PTO controller.
7. If no power is recorded at AUX/Hitch/PTO connectors continue checking harness wiring from AUX/Hitch/PTO
controller to PTO solenoid for short to power.
NOTE: See schematic section 49 and 50 on the schematic poster.
Section 55 - Electrical System, Controller - Chapter 3
AUX/HITCH/PTO FAULT CODE 171
AUX/HITCH/PTO FAULT CODE 172
55-3-101