New Holland T8010 Manual page 1509

PTO Clutch Is Slipping Excessively For The Duration Of 5 Seconds Or
Longer
Cause:
The PTO controller monitors the PTO clutch input and output speed. This fault code is recorded when the
difference of the input and output is beyond the limit.
Possible failure mode:
1. PTO load too heavy.
2. PTO clutch pressure too low.
3. PTO speed sensor or its wiring harness failure.
4. Incorrect engine RPM signal from the alternator.
Solution:
Make sure there is no PTO clutch slippage caused by either a heavy implement load or PTO clutch internal
problem.
Test the PTO speed sensor and its wiring harness.
1. Turn off tractor engine. Check the implement connected to the PTO. Make sure the load is proper.
2. Check the PTO clutch pressure and PTO valve. Check for sticking solenoid, sticking valve spool, leaking clutch
seal, burned clutch pad, or broken PTO shaft.
3. Check the alternator and the engine RPM signal from the alternator.
The PTO clutch input speed is the engine RPM signal from the alternator.
a. Make sure the alternator is the correct model. Incorrect alternator will give wrong signal frequency which
may trigger this fault code.
b. Check for worn alternator belt.
c. Check the engine RPM signal wiring. There should be good continuity between cavity 33 of AUX/Hitch/PTO
controller connector C057 and the terminal W of the alternator.
d. Check the engine RPM signal at terminal W of the alternator.
e. Go to the monitor screen of the service tool. Select parameter PTO ENGINE SPEED FREQUENCE. This is
the PTO clutch input speed.
4. Check the wiring harness to the PTO shaft speed sensor.
Check the continuity from Pin 20 of connector C058 to Pin A of connector C145.
Check the continuity from Pin B of connector C145 to the chassis ground.
5. Check the function of the PTO speed sensor. It should have resistance of about 3 K ohms.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
NOTE: See schematic sections 49, 50 and 19 and 27 on the schematic poster.
Section 55 - Electrical System, Controller - Chapter 3
AUX/HITCH/PTO FAULT CODE 160
55-3-90