Aux/Hitch/Pto Fault Code 15 - New Holland T8010 Manual

5 Volt Reference is Below the Lower Voltage Limit
Cause:
The 5 volt reference voltage is monitored and is consistently less than 4.2 volts.
Possible failure mode:
1. Short circuit to ground or an open circuit.
2. No power or ground to AUX/Hitch/PTO controller. Other low voltage fault codes will be recorded.
Solution:
1. Check the power supply to the Tractor Data Bus.
A. Check fuse #42.
B. Turn the tractor key switch to the ON position. Verify approximately 12 volts power at fuse #42. If no power,
check the power supply to the key switch power stud.
2. Turn the key switch ON. Disconnect connector C055 (center left) on the AUX/Hitch/PTO controller. Use a
multimeter to check the voltage from pin 23 on the controller to ground.
A. It should read approximately 5 volts. If the reading is good go to step 2.
B. If the reading is below 4.2 volts replace the controller.
3. Locate connector C150 (6 pin) at the rear of the tractor, near the AUX/Hitch/PTO connector. Remove the plug
if the connector is not in use. Use a multimeter to check for continuity between the harness connector C055 pin
23 to connector C150 pin 2.
A. If there is continuity continue with step 3.
B. If there is no continuity locate the open circuit and repair.
4. Connect C055 back onto the AUX/Hitch/PTO controller. Use a multimeter to check the voltage from connector
C150 pin 2 to ground.
A. It should read approximately 5 volts. If the reading is good erase fault code. If the fault code returns it may
be a intermittent short to ground, or poor connection between connectors C150 and C055.
B. If the reading is below 4.2 volts there is a short to ground, or broken wire somewhere between connector
C150 and connector C055 at the AUX/Hitch/PTO controller. Locate and repair the short.
Section 55 - Electrical System, Controller - Chapter 3

AUX/HITCH/PTO FAULT CODE 15

55-3-15